Hey buddy, I found your channel while looking for solutions to my own problem. You seem to be the most responsive person, so I’m going with you... my car: 99 CRV, 184k miles On my way home today, the fuel level was really low, light wasn’t on tho. When I went to pass another car, the crv fell on its face and gave some studders, but otherwise kept going. Put gas in it and when I was leaving the station, the check engine light came on. The car idles fine, can rev fine in park or neutral. But when I go to drive it, it studders and hesitates and kinda bogs, I have to back off the pedal to get it to go...it will still drive so far. My neighbors scanner says p1399, which is a very general code for misfire... I’ve already been thru the burnt valve when I got the car, that’s all fixed and she been running fine for a year now. It even passed smog with flying colors 1 week ago exactly. I’ve pulled the wires to check them and they aren’t the problem. It doesn’t idle rough, it doesn’t have any misfire at idle, only when I try to go. Could it be a fuel pump or filter? I changed the fuel cap recently also. Can’t imagine the o2 sensors just up and quit... I’m stumped, can you gimme any more ideas buddy?
Sounds like a fuel pump to me. The gas acts as a coolant for the fuel pump. If the fuel pump is old and tired the extra heat from low fuel will send it to its doom even quicker. One of the classic symptoms of a bad pump is the car will start and run but you can't accelerate hard or can only slowly get 20 or 30 mph before the car falls on it's face. The pump can no longer keep up with the fuel demands and the car runs lean then misfires. (code 1399) A fuel pressure gauge will confirm this as you drive. I can't remember if the CRV has a fitting for one or not. Good luck.
@@local701 man, I think you nailed it. Fuel pump was my first thought when it happened. It’s a 22 year old car now, my neighbors brother owned it originally and maintained it I have all the records, then my neighbors got it and they just drove it into the ground for the last 10 years, drove with the valves needing adjustment and check engine light on till it burnt a valve, that’s when I got it and did the valves after researching those codes. Joe ain’t one for maintenance, he wants to sell their Subaru rather than put tires on it, so everything except things I have replaced is either original or more than 10-15 years old...I ordered a tuneup kit for it, I’ll get me a fuel pump from autozone this week too. Thankyou thankyou for replying, I’m hitting the subscribe button soon as this long ass comment is done!
@@local701 it’s funny you mention heat too, because since Sunday it’s been over 100 degrees here already and today was my first day back to work after the weekend. Car sat in the blazing sun all day today, at home it gets shaded most of the day. So add everything up : hot day + mostly empty tank + 80mph + 22 year old fuel pump = no bueno. Thanks again, I plan to hopefully pick your brain on quick struts in the next couple weeks, I want to put a 2” lift and do the quick struts at the same time. I want 235/75s on it :) You have a great channel, I poked around briefly tonight, I’m definitely coming here first next time.
@@TheFrogfeeder I'm having the exact same issue, to the T. Of what you're having. I saw you did post this 7 months ago. What did you end up having to replace to make it quit missing? Mine doesn't miss in Park or Neutral. Just like yours. I need help. Please 🆘
@@donutcrash mine DID in fact turn out to be just a spark plug wire. I did a full tune up, oil change, and even replaced the fuel pump, I think it was the #2 wire that burned out. I remember I did the wires last, kept checking at every step/replaced part, I usually do them first... My crv had previously burned a valve from never having been adjusted, thats how I got it from my neighbor, and that has very similar symptoms and is very common to the early crv and will throw the same code. I rebuilt the top end about 1 year before. so if you don’t find your misfire between the distributor and the plugs, gonna hafta pop the valve cover off and see how tight those bad boys are. If you have had the car for say 50-70k miles and you personally never had the valves adjusted, that’s not good, it needs to be done. If you don’t find the misfire before/at the plugs, and the valves are really tight, you gotta pull the head and check the actual valves, I think my burnt valve was the exhaust for #2, I did em all while I was in there right... now my crv has new shocks, a 3” lift, and bigger off road tires, she running and looking great :)
I have a 2000 Honda Odyssey with p1399 and p0300 and misfire in all the cylinders I changed all the coils and plugs the code went away and then it came right back my I did a valve adjustment cleaned the egr valve nothing helped I think it can be a faulty fuel injector because the customer has told me the j35 v6 engine has been burning a lot of gas I used aftermarket coils and used honda oem sparkplugs
Check the long and short term fuel trims. If both terms are adding fuel (a number without a - minus sign in front of it) you probably have a vacuum leak somewhere, and the possible cause of misfire on all cylinder's. (Check the MAP sensor also, poor fuel economy is a symptom if it starts going bad.) The J series can be a pain some times. P.S Tight exhaust valves can misfire (flashing CEL) with a slight backfire when cold and go away once the engine gets warm.
98 accord 4cyl, same issue p1399, and P0303. Still trying to figure out what it is. I does go away as the car gets warmer, but is there always there , a very light misfire.
Exhaust valves are probably so tight that they are not closing all the way. Over tight valves can cause a bad misfire when cold that can completely disappear when warm.
I had the same problem and I replaced my plugs and wires which made it go away for a week or so. I started it up on a warm morning and she sounds really rough, consistent misfiring. Not sure what it could be as it doesn’t always stick around
This just happened to me this morning with my 2002 Acura TL type S, brand new plugs and it drive well for a week up until now. I’m not sure if it’s my valves or fuel injectors
Have a 01 same code valves adjusted tune up done and new timing belt along with new distributor.. only missing when cold after warms up it stops. Mechanic says he came figure it out 530 dollars later. Funny thing is it started after i put new plugs and rotor button and cap on it trying to do good.. any ideas would greatly be appreciated
I had a Honda J series that had a flashing CEL with backfires when cold that completely went away once warm. Turned out to be slightly tight exhaust valves. Just because the spark plugs are new doesn't mean they are good. Put the old plugs back in or a new cheap set to see if the misfire go's away. I had a Grand Cherokee set in my garage for a month over new defective parts. (TRUST NOTHING NEW)
It has a standard OBD2 port, but it's in a crazy location. You must be on the passenger side of the car. The port is on the center stack (not the dashboard) just below the radio with the port pins facing the passenger door. Hope this helps.
The number one suspect would be overly tight valves. If you get tinny backfires, rough idle, and misfires until warm this may be the culprit. Once the engine is hot the valve clearances' expand a little and the misfires stop. Once it's completely cold they contract and misfire again.
Man I am having same code and just performed the valve lash adjustments (maybe I should’ve left exhaust ones looser?? Closer to .20 as opposed to .18). It does feel like for me it’s just on cold start- 1st start of the day or a while. Anyhow I haven’t bothered to inspect my plugs yet cuz I had them and all the wires replaced within the last 2/3 years and went with the iridium ones so wouldn’t think those ones would go bad that quickly- but now I have to check them and at least I kept all of the old ones so I’m sure one of those are still good for testing purposes.
After warmup the flashing cel does go away. I may check the tightness on my exhaust valves again as well and just leave them a bit looser…any thoughts ?
Update: 2nd cylinder spark plug was definitely compromised. Did the same thing here- pulling cables off while car running. Also next day when I went to remove plugs and inspect, #2s was TIGHT! It actually had eaten up a bit of the bottom threading I realized after pulling. Hoping cel lights stay off, it’s only day 1 still after this discovery. Disconnected battery to clear light. My bank one o2 sensor code got triggered as well. Hoping it was just due to the misfire.🤞🏼
Got the 91399 code, it starts runs fine but after getting to operation timp it starts having that miss. Put new plugs new distributor wires. And sometimes it won't have the miss I'm at a lost ?
Can you narrow it down to which cylinder has the misfire when warm? You can check the normal things below also: The EGR may be clogged. A valve adjustment can never hurt. Compression or leak down test if you have access to the equipment. Good luck.
Thanks. The original black was in horrible condition and took away from the overall look of the truck. The cover had to come off to adjust the valves so I painted it with VHT SP204 wrinkle red. The key is to bake it in a oven instead of letting it air dry.
The first generation CRV is one of the last great Honda products. As they say (they don't make them like they use to). 263k is nothing if it's a 5 speed. Let me know when you hit 400k. Thanks.
It was a B20Z 140ish horse power (big square intake manifold). It sold off the lot in less than 24 hours. That color and with only 136k on the clock is hard to find. I have only seen two nice 5 speeds at auction in the last five years. RARE.
Really, it was just the spark plug? I put it a new set and it still misses. Rotor and cap looks fine. I have another I can try on there. I checked the wires at night and sprayed them with water and no flashes. I checked the valve lash and it’s correct. I could loosen the exhaust valves just to do it. I will check compression. I had another set of fuel injectors and put them in and it’s the same. I already changed the fuel filter. And it seems like it’s getting enough fuel because it can charge around while driving. I’m thinking some kind of ignition problem.
@@karamalqussiri6533 my friend adjusted the timing by turning the distributor and the misfires went away. My fuel consumption is terrible right now though. I need to get it properly timed. Who figured that after a timing belt you need to adjust timing? 😂😂 So the real cause was my stupidity 😉
Man my 00 5 speed w 180k had two stuck exhaust valves so I adjusted rest and cleaned them all. I swapped dizzy, wires, plugs, & it’s still misfiring… mannnn I got it for 1500 and I know it’s worth 4k I gotta fix it!
Got saing this one 2000 5 speed my staring morning good got to work like 35 m for my house be my jod traing stared I don't won't staring way like 25 m staring ogain staring the rpm got real slow to 1 put off staring game staring fine driving back the house do saint thing any body know it know whatt maby problem thank s much can healp me good video bro
My do saint thing got saint code and today take apart number 1 car got off thing need change it car runing like 35 m put it off don't want to staring back need to way like 20 miter staring ogaing thank thing the rain problem
The first time i have this code, with check engine light flushing and you can feel the misfire car shaking a lot, inturn the cat off, and then back on, no problem at all,but i did remove the spark plugs, clean them with metal wire brush gently, and problem solved, no p1399 for two one year and a half, of course i did replace the spark plug later with new one, but this time, no missfire symptoms at all, but the check engine light start flushing, the cose was P1399, the car is running fine shifting fine, you cant feel anything wrong while driving, but i will check the spark plugs first clean them.or replace them if necessary, and also put bag the OEM distributor, wns rwmive the aftermarket one.
@@thesonofalivinggod6782 basically l discovered multiple problems that cause a check engine flashing light or misfire on any cilynder, first was an engine oil leak on the spark plug, which comes from the valve cover gasket inside the spark plug holes, that fixed by chanching the gasket, The second was the loose electric ignition wire connection that i created myself when i installed the start button system, and also bad battery terminal connection, that got fixed also, in addition i have adjusted the head cilynder valves (they were out of adjustment, but that improve the car idling, no more hard idling), and the last problem is the vacuum leak, which was coming from the PCV valve hose, and the intake gasket, no much, beacuse the car was running fine by increasing the fuel delivery by 14 percent, PCV valve hose has been replaced with the PCV valve and the its bushing or called gromet, but the leak coming from the intake gasket, installing new gasket dosent fixe the problem. I will try to add some good silicone rubber to the gasket to seal any potential leaks.
If the upstream o2 was completely dead not just the heated portion. The computer will default to limp home mode and dump more fuel into the system to protect the engine. (Vehicle will run a little sluggish in this mode.) Once a new o2 is installed and the computer can read the air fuel ratio properly things will default back to normal. Now the fun starts. P1399 can be tripped in Hondas for a lot of reasons. I have two guesses. #1. Spark plugs were contaminated by deposits from all the excess fuel being dumped while in limp home mode. (change the plugs) #2. Vacuum leak. You will have to look at the fuel trims to verify that. (cracked or broken vacuum line) Both of these will be masked while in limp home mode, but show themselves once out of it. Good luck. PS (exhaust valves may need adjusting also)
That's how all my spark plugs looked. I put new NGK Iridium plugs in $10 a spark plug. I know. Stupid expensive, but with 200,000 miles it needed good love. After replacing them, my mis went away for awhile. Still missing though, #p1399 #p1301 $p1304. Random misfires, only on idle on a load, if I put it in neutral, it's fine. I am stumped...
@@mannydaluz816you're hilarious hahaha. Honda dealerships sell NGK iridium spark plugs. If you want to pay more for them at the dealership, then be a tool for them hahaha
Check for spark. Pull one spark plug wire out of the cylinder head and put a spark plug in it. Ground the plug on the valve cover and turn the engine over. You should see a spark jump from the plug to the valve cover. If you have spark check your firing order. Especially if it's backfiring.
@@randomrandy3059 hay man, does your crv have electric sunroof? I have no power what so ever , and i dont know what wire in the ceiling supplies 12v. If yours has sunroof any chance you could let me know witch colour wires has 12v. Just pull the square gasket around the sunroof interior and youll see a brown connector plug , and a blue plug. Ill be most grateful! All my fuses are fine and not much luck on goggling
Its the fuel injectors or the egr valve is clogged. Been thru hell w this code wish good luck to everyone
This engine is gorgeous 😍
Hey buddy, I found your channel while looking for solutions to my own problem. You seem to be the most responsive person, so I’m going with you... my car: 99 CRV, 184k miles
On my way home today, the fuel level was really low, light wasn’t on tho. When I went to pass another car, the crv fell on its face and gave some studders, but otherwise kept going. Put gas in it and when I was leaving the station, the check engine light came on.
The car idles fine, can rev fine in park or neutral. But when I go to drive it, it studders and hesitates and kinda bogs, I have to back off the pedal to get it to go...it will still drive so far.
My neighbors scanner says p1399, which is a very general code for misfire... I’ve already been thru the burnt valve when I got the car, that’s all fixed and she been running fine for a year now. It even passed smog with flying colors 1 week ago exactly.
I’ve pulled the wires to check them and they aren’t the problem. It doesn’t idle rough, it doesn’t have any misfire at idle, only when I try to go. Could it be a fuel pump or filter? I changed the fuel cap recently also. Can’t imagine the o2 sensors just up and quit...
I’m stumped, can you gimme any more ideas buddy?
Sounds like a fuel pump to me. The gas acts as a coolant for the fuel pump. If the fuel pump is old and tired the extra heat from low fuel will send it to its doom even quicker.
One of the classic symptoms of a bad pump is the car will start and run but you can't accelerate hard or can only slowly get 20 or 30 mph before the car falls on it's face. The pump can no longer keep up with the fuel demands and the car runs lean then misfires. (code 1399)
A fuel pressure gauge will confirm this as you drive. I can't remember if the CRV has a fitting for one or not.
Good luck.
@@local701 man, I think you nailed it. Fuel pump was my first thought when it happened. It’s a 22 year old car now, my neighbors brother owned it originally and maintained it I have all the records, then my neighbors got it and they just drove it into the ground for the last 10 years, drove with the valves needing adjustment and check engine light on till it burnt a valve, that’s when I got it and did the valves after researching those codes. Joe ain’t one for maintenance, he wants to sell their Subaru rather than put tires on it, so everything except things I have replaced is either original or more than 10-15 years old...I ordered a tuneup kit for it, I’ll get me a fuel pump from autozone this week too. Thankyou thankyou for replying, I’m hitting the subscribe button soon as this long ass comment is done!
@@local701 it’s funny you mention heat too, because since Sunday it’s been over 100 degrees here already and today was my first day back to work after the weekend. Car sat in the blazing sun all day today, at home it gets shaded most of the day. So add everything up : hot day + mostly empty tank + 80mph + 22 year old fuel pump = no bueno.
Thanks again, I plan to hopefully pick your brain on quick struts in the next couple weeks, I want to put a 2” lift and do the quick struts at the same time. I want 235/75s on it :)
You have a great channel, I poked around briefly tonight, I’m definitely coming here first next time.
@@TheFrogfeeder I'm having the exact same issue, to the T. Of what you're having. I saw you did post this 7 months ago. What did you end up having to replace to make it quit missing? Mine doesn't miss in Park or Neutral. Just like yours. I need help. Please 🆘
@@donutcrash mine DID in fact turn out to be just a spark plug wire. I did a full tune up, oil change, and even replaced the fuel pump, I think it was the #2 wire that burned out. I remember I did the wires last, kept checking at every step/replaced part, I usually do them first...
My crv had previously burned a valve from never having been adjusted, thats how I got it from my neighbor, and that has very similar symptoms and is very common to the early crv and will throw the same code. I rebuilt the top end about 1 year before. so if you don’t find your misfire between the distributor and the plugs, gonna hafta pop the valve cover off and see how tight those bad boys are. If you have had the car for say 50-70k miles and you personally never had the valves adjusted, that’s not good, it needs to be done. If you don’t find the misfire before/at the plugs, and the valves are really tight, you gotta pull the head and check the actual valves, I think my burnt valve was the exhaust for #2, I did em all while I was in there right...
now my crv has new shocks, a 3” lift, and bigger off road tires, she running and looking great :)
I have a 2000 Honda Odyssey with p1399 and p0300 and misfire in all the cylinders I changed all the coils and plugs the code went away and then it came right back my I did a valve adjustment cleaned the egr valve nothing helped I think it can be a faulty fuel injector because the customer has told me the j35 v6 engine has been burning a lot of gas I used aftermarket coils and used honda oem sparkplugs
Check the long and short term fuel trims. If both terms are adding fuel (a number without a - minus sign in front of it) you probably have a vacuum leak somewhere, and the possible cause of misfire on all cylinder's.
(Check the MAP sensor also, poor fuel economy is a symptom if it starts going bad.)
The J series can be a pain some times.
P.S Tight exhaust valves can misfire (flashing CEL) with a slight backfire when cold and go away once the engine gets warm.
98 accord 4cyl, same issue p1399, and P0303. Still trying to figure out what it is. I does go away as the car gets warmer, but is there always there , a very light misfire.
Exhaust valves are probably so tight that they are not closing all the way. Over tight valves can cause a bad misfire when cold that can completely disappear when warm.
I had the same problem and I replaced my plugs and wires which made it go away for a week or so. I started it up on a warm morning and she sounds really rough, consistent misfiring. Not sure what it could be as it doesn’t always stick around
This just happened to me this morning with my 2002 Acura TL type S, brand new plugs and it drive well for a week up until now. I’m not sure if it’s my valves or fuel injectors
Have a 01 same code valves adjusted tune up done and new timing belt along with new distributor.. only missing when cold after warms up it stops. Mechanic says he came figure it out 530 dollars later. Funny thing is it started after i put new plugs and rotor button and cap on it trying to do good.. any ideas would greatly be appreciated
I had a Honda J series that had a flashing CEL with backfires when cold that completely went away once warm. Turned out to be slightly tight exhaust valves.
Just because the spark plugs are new doesn't mean they are good. Put the old plugs back in or a new cheap set to see if the misfire go's away. I had a Grand Cherokee set in my garage for a month over new defective parts. (TRUST NOTHING NEW)
I have seen brand new defective / cracked caps and rotors before
Hello! How did you connect the diagnostic tool to your honda crv 2000? Is there a 16pin obd port or a 3 pin? Thanks.
It has a standard OBD2 port, but it's in a crazy location.
You must be on the passenger side of the car. The port is on the center stack (not the dashboard) just below the radio with the port pins facing the passenger door.
Hope this helps.
local701 Thank you so much.
I bought a 99 crv from a dealer and it stalls when cold. Can't tell if misfires but I think idle control valve is bad. Any ideas?
The number one suspect would be overly tight valves. If you get tinny backfires, rough idle, and misfires until warm this may be the culprit. Once the engine is hot the valve clearances' expand a little and the misfires stop. Once it's completely cold they contract and misfire again.
Man I am having same code and just performed the valve lash adjustments (maybe I should’ve left exhaust ones looser?? Closer to .20 as opposed to .18). It does feel like for me it’s just on cold start- 1st start of the day or a while. Anyhow I haven’t bothered to inspect my plugs yet cuz I had them and all the wires replaced within the last 2/3 years and went with the iridium ones so wouldn’t think those ones would go bad that quickly- but now I have to check them and at least I kept all of the old ones so I’m sure one of those are still good for testing purposes.
After warmup the flashing cel does go away. I may check the tightness on my exhaust valves again as well and just leave them a bit looser…any thoughts ?
Update: 2nd cylinder spark plug was definitely compromised. Did the same thing here- pulling cables off while car running. Also next day when I went to remove plugs and inspect, #2s was TIGHT! It actually had eaten up a bit of the bottom threading I realized after pulling. Hoping cel lights stay off, it’s only day 1 still after this discovery. Disconnected battery to clear light. My bank one o2 sensor code got triggered as well. Hoping it was just due to the misfire.🤞🏼
Got the 91399 code, it starts runs fine but after getting to operation timp it starts having that miss. Put new plugs new distributor wires. And sometimes it won't have the miss I'm at a lost ?
Can you narrow it down to which cylinder has the misfire when warm?
You can check the normal things below also:
The EGR may be clogged.
A valve adjustment can never hurt.
Compression or leak down test if you have access to the equipment.
Good luck.
The mis is so iraguler its almost impossible to catch it lol but starting with egr
Did you end up finding out what it was. I'm having the exact same problem
Beautiful wrinkle red valve cover!!!
Thanks. The original black was in horrible condition and took away from the overall look of the truck. The cover had to come off to adjust the valves so I painted it with VHT SP204 wrinkle red. The key is to bake it in a oven instead of letting it air dry.
@@local701 I have the same exact CRV. 263K on it. I love that thing.
The first generation CRV is one of the last great Honda products. As they say (they don't make them like they use to). 263k is nothing if it's a 5 speed. Let me know when you hit 400k. Thanks.
@@local701 Unfortunately it's not a 5 speed. I wish! My engine code also says it's a B20Z. Does yours say that?🤔
It was a B20Z 140ish horse power (big square intake manifold). It sold off the lot in less than 24 hours. That color and with only 136k on the clock is hard to find. I have only seen two nice 5 speeds at auction in the last five years. RARE.
Really, it was just the spark plug? I put it a new set and it still misses. Rotor and cap looks fine. I have another I can try on there. I checked the wires at night and sprayed them with water and no flashes. I checked the valve lash and it’s correct. I could loosen the exhaust valves just to do it. I will check compression.
I had another set of fuel injectors and put them in and it’s the same. I already changed the fuel filter. And it seems like it’s getting enough fuel because it can charge around while driving.
I’m thinking some kind of ignition problem.
What did it end up being? Burnt valves?
@@karamalqussiri6533 my friend adjusted the timing by turning the distributor and the misfires went away. My fuel consumption is terrible right now though. I need to get it properly timed. Who figured that after a timing belt you need to adjust timing? 😂😂
So the real cause was my stupidity 😉
Im confused did he just change the spark plug
Yes it was just a bad spark plug.
Man my 00 5 speed w 180k had two stuck exhaust valves so I adjusted rest and cleaned them all. I swapped dizzy, wires, plugs, & it’s still misfiring… mannnn I got it for 1500 and I know it’s worth 4k I gotta fix it!
Where did you purchase the electric tool
I purchased it from Amazon.
ACDelco ARW1201 Li-ion 12V 3/8" Ratchet Wrench
@@local701 it good one how much you pay it amazon
@@angelgarcias7328
$130.00
Than good thank s much for you h ready thank $$$$$$$$$
Got saing this one 2000 5 speed my staring morning good got to work like 35 m for my house be my jod traing stared I don't won't staring way like 25 m staring ogain staring the rpm got real slow to 1 put off staring game staring fine driving back the house do saint thing any body know it know whatt maby problem thank s much can healp me good video bro
Is that the a gsr motor in that crv? Looks clean
No it's a 2.0 non vtec.
The valve cover comes stock crinkle black. I was out of black so I painted it crinkle red.
My do saint thing got saint code and today take apart number 1 car got off thing need change it car runing like 35 m put it off don't want to staring back need to way like 20 miter staring ogaing thank thing the rain problem
My car has the same problem, change the sparkplugs, wires and coils, adjust valves, replace timing belt, regrind valves, and still mis firing,
Bernard Olaveria same here!!!!!! I got crv 2001 I don’t find any solution!!!
I replace the factory distributor from Honda and solve the problem now
Bernard Olaveria Fuel filter, distributor, map sensor
The first time i have this code, with check engine light flushing and you can feel the misfire car shaking a lot, inturn the cat off, and then back on, no problem at all,but i did remove the spark plugs, clean them with metal wire brush gently, and problem solved, no p1399 for two one year and a half, of course i did replace the spark plug later with new one, but this time, no missfire symptoms at all, but the check engine light start flushing, the cose was P1399, the car is running fine shifting fine, you cant feel anything wrong while driving, but i will check the spark plugs first clean them.or replace them if necessary, and also put bag the OEM distributor, wns rwmive the aftermarket one.
How did you fix it you said the cat?
@@thesonofalivinggod6782 basically l discovered multiple problems that cause a check engine flashing light or misfire on any cilynder, first was an engine oil leak on the spark plug, which comes from the valve cover gasket inside the spark plug holes, that fixed by chanching the gasket, The second was the loose electric ignition wire connection that i created myself when i installed the start button system, and also bad battery terminal connection, that got fixed also, in addition i have adjusted the head cilynder valves (they were out of adjustment, but that improve the car idling, no more hard idling), and the last problem is the vacuum leak, which was coming from the PCV valve hose, and the intake gasket, no much, beacuse the car was running fine by increasing the fuel delivery by 14 percent, PCV valve hose has been replaced with the PCV valve and the its bushing or called gromet, but the leak coming from the intake gasket, installing new gasket dosent fixe the problem. I will try to add some good silicone rubber to the gasket to seal any potential leaks.
Try racing wires.then iridium plugs.use only 93 octane.
I had recently changed my o2 upstream n down stream and then this p1399 code came on a hour or so later
If the upstream o2 was completely dead not just the heated portion. The computer will default to limp home mode and dump more fuel into the system to protect the engine. (Vehicle will run a little sluggish in this mode.)
Once a new o2 is installed and the computer can read the air fuel ratio properly things will default back to normal. Now the fun starts.
P1399 can be tripped in Hondas for a lot of reasons. I have two guesses.
#1. Spark plugs were contaminated by deposits from all the excess fuel being dumped while in limp home mode. (change the plugs)
#2. Vacuum leak. You will have to look at the fuel trims to verify that. (cracked or broken vacuum line)
Both of these will be masked while in limp home mode, but show themselves once out of it.
Good luck.
PS (exhaust valves may need adjusting also)
That's how all my spark plugs looked. I put new NGK Iridium plugs in $10 a spark plug. I know. Stupid expensive, but with 200,000 miles it needed good love. After replacing them, my mis went away for awhile. Still missing though, #p1399 #p1301 $p1304. Random misfires, only on idle on a load, if I put it in neutral, it's fine. I am stumped...
take those iridium plugs and throw them in the trash, nothing works better then the factory plug. Thats all I ever use.
@@mannydaluz816you're hilarious hahaha. Honda dealerships sell NGK iridium spark plugs. If you want to pay more for them at the dealership, then be a tool for them hahaha
My car was experiencing this same problem. Changed the spark plugs and wires and now it don’t wanna start.
Currently jumping the battery and nothing.
Check for spark.
Pull one spark plug wire out of the cylinder head and put a spark plug in it.
Ground the plug on the valve cover and turn the engine over. You should see a spark jump from the plug to the valve cover.
If you have spark check your firing order. Especially if it's backfiring.
You have mixed up the ignition leads. Always good practice to take pictures of wire orientations. Or even lable each lead 1,2,3,4
keep it moving got it going last night. Changed the distributor and had to play with a bit to get it started but it started.
@@randomrandy3059 hay man, does your crv have electric sunroof? I have no power what so ever , and i dont know what wire in the ceiling supplies 12v. If yours has sunroof any chance you could let me know witch colour wires has 12v. Just pull the square gasket around the sunroof interior and youll see a brown connector plug , and a blue plug. Ill be most grateful! All my fuses are fine and not much luck on goggling