P0401 egr insufficient flow

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  • Опубліковано 24 сер 2024
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КОМЕНТАРІ • 132

  • @markappert
    @markappert 3 роки тому +9

    Top-notch instructional video. Very thoughtful and well produced. nice work.

  • @skelband
    @skelband 4 роки тому +6

    Just wanted to say that following your video I managed to diagnose the exact same issue on my 2002 Montana.
    It looks to have pretty much the same or similar engine. P0401 error and gunked up gas port, exactly the same in in your video.
    Cleaned it out, code gone!
    Thank you so much for this video!

    • @themechanic6117
      @themechanic6117  4 роки тому +1

      Glad to hear that! Glad the video helped you

    • @emmettturner9452
      @emmettturner9452 Місяць тому

      Did yours have the exhaust hose bolted to the back like my 2000 Montana? All the Venture/Silhouette/Montana EGR videos skip over that because they have a different EGR valve (49-state?) and it has turned this job into a nightmare!

  • @wyattoneable
    @wyattoneable 6 років тому +10

    Nice find on that one. About a year ago I had a similar code and it was in fact the EGR valve, but your right. Diagnose before throwing parts.

    • @redhead6351
      @redhead6351 Рік тому

      how did u know it was the egr valve i have a 1999 chevy venture 3.4 and i got the same code po0401 and i replaced the egr valve and the code came back so what am i misssing thanks alot

  • @lostbooks2918
    @lostbooks2918 2 роки тому

    Just got this code on my 2005 Santa Fe. Looks like I'll be doing this. You've given me more confidence

  • @misledprops
    @misledprops 8 місяців тому

    Thank you! Simple but extremely informative video.

  • @WVCountryBoy101
    @WVCountryBoy101 6 років тому +5

    Awesome video, I've got a 93 F150 and have been watching video after video on how to go about fixing the main problem and not just a bandaid with a new egr valve, and I'll be driving into mine tomorrow like u did, thanks for all the insight and time, definitely got a new fan.

  • @Siknan80
    @Siknan80 Рік тому

    Thanks a lot, cool calming voice and nice Humor.. That hose intermission was 🤣💯

  • @CHIBA280CRV
    @CHIBA280CRV 3 роки тому +4

    Dude you fixed the problem, shown the procedure and made me laugh with the skid of the hose .🤣😂 thanks bro” 😅

  • @leticiatrevino9824
    @leticiatrevino9824 Рік тому +1

    Thank you saved me lot of MONEY.

  • @ernestpannell8395
    @ernestpannell8395 3 роки тому +2

    Great video I'm having the same issues with my 98 Pontiac transport as we speak I'm bout to try what you show me and hopefully it works okay great job on the demonstration.

    • @themechanic6117
      @themechanic6117  3 роки тому

      You're welcome. Thanks for watching and good luck

  • @muhammadtahir-om2sw
    @muhammadtahir-om2sw 4 роки тому +2

    very good way of explaining. good job

  • @steves563
    @steves563 5 років тому +4

    I got this code on my 98 Accord.. From prior experience I figured that the EGR valve was not bad. I just cleaned it with carb cleaner spray and also bought a variety pack of bottle brushes at Harbor Freight.. also large pipe cleaners usually found at hobby stores or maybe Walmart are helpful cleaning out those passages (I don't have an air copressor). Took about and hour. Code hasn't come back. : )

    • @themechanic6117
      @themechanic6117  5 років тому +2

      Good thinking. People are usually quick to replace the egr when there's nothing wrong with it

    • @steves563
      @steves563 5 років тому +1

      On the Accord EGR valve it's pretty easy to exercise the valve and spray cleaner into it...

    • @jponzy8157
      @jponzy8157 4 роки тому +1

      Steve S I got the same code on the same car, thanks for the heads up

  • @slkrck4890
    @slkrck4890 2 роки тому +1

    That a real video thanks

  • @christopherbloomer2338
    @christopherbloomer2338 3 роки тому +1

    😂😂 not 1 not 2 but 3. great video dude🤙

  • @normansmith7806
    @normansmith7806 6 років тому +3

    Good video !!

  • @NINJA2da
    @NINJA2da 4 роки тому

    Need video for Toyota Prius 3rd gen. Anyway, from much research.....to remove the EGR cooler/assemble...... use an extra reach 12 mm racheting wrench for the three Nuts in the back. I had a hard time reaching the 4th HIDDEN 12 mm nut underneath the EGR cooler. Then, used a Torx E8 socket for the two Bolts ( in the back of EGR cooler) and I finally freed the EGR assembly. It's literally impossible to remove EGR valve only for DYI non professional therefore remove the whole EGR assembly. Good Video mec a !!!

  • @anthonym612
    @anthonym612 4 роки тому +2

    Came for the repair tutorial - stayed for the infomercial.

  • @djjjamz
    @djjjamz 6 років тому +1

    Great video. Keep it up

  • @juggalogamer8541
    @juggalogamer8541 2 роки тому +1

    My Ford Taurus 2006 had this issue had a diagnostics check in this is what popped up with this code that I needed something my check my check engine light came on and also low oil pressure

  • @Mrfurballs
    @Mrfurballs 5 років тому +2

    I have/had the same code on my 1999 Ford expedition , the code said it was my DPFE sensor , i bought a new one , i disconnected the negative battery cable before installing it , a few miles into driving the ceL came on and the same code again haha .

    • @themechanic6117
      @themechanic6117  5 років тому +6

      Codes don't tell you what part is bad, codes give you a sense of direction while diagnosing the real problem

    • @Mrfurballs
      @Mrfurballs 5 років тому +2

      The mech a nic i figured that one out after autozone did the code reader on the expo , they charged me for a part that didnt even solve the problem 😒 .

    • @themechanic6117
      @themechanic6117  5 років тому +3

      AutoZone just sells parts, they don't diagnose . I tell everyone to never listen to the parts store employees because (most times) they don't know what they're talking about, that was just a waste of money and time.

  • @russellbantin8468
    @russellbantin8468 4 роки тому +5

    10:08 always happens... where is it now?

    • @themechanic6117
      @themechanic6117  4 роки тому

      Exactly lol. I found it and put it back on 👍

  • @bodgitandleggitgarage
    @bodgitandleggitgarage 6 років тому +3

    Kissing an EGR valve and wrestling with an air hose what am I watching🤣🤣🤣🤣 great video mate

    • @themechanic6117
      @themechanic6117  6 років тому +1

      +bodgit and leggit garage lmao, glad you enjoyed it. 😂

  • @jonmo2694
    @jonmo2694 4 місяці тому

    So, I did all this,my passage after the throttle body was not clogged.Any suggestions? My EGR was fine also, spring on it worked and was not very dirty.I did notice the last time I cleaned the throttle body, that when I took it off when checking the EGR that the throttle body gasket was a little smashed in one side, whereas it is a rounded gasket

  • @stevesmith3556
    @stevesmith3556 Рік тому +1

    Are you tired of crappy airlines!
    Yes! Sell me five! 😂🤣😂
    You have a career in infomercials my friend. 😜

    • @themechanic6117
      @themechanic6117  Рік тому

      🤣👍

    • @stevesmith3556
      @stevesmith3556 Рік тому +1

      @@themechanic6117
      Cleaned it out today. Was completely plugged. Took a while, but the check engine light turned off

    • @themechanic6117
      @themechanic6117  Рік тому

      @@stevesmith3556 nice! Can't argue with those results

  • @NewLevelAuto
    @NewLevelAuto 6 років тому +5

    Why do they introduce the exhaust gases into the intake?

    • @EXOVCDS
      @EXOVCDS 6 років тому +6

      Because the exhaust is already full of it!

    • @NewLevelAuto
      @NewLevelAuto 6 років тому +3

      Thomas EXOVCDS Brilliant reply Thomas 😂

    • @themechanic6117
      @themechanic6117  6 років тому +1

      Thomas EXOVCDS I couldn't have answered better lol

    • @bodgitandleggitgarage
      @bodgitandleggitgarage 6 років тому

      Thomas EXOVCDS 🤣🤣🤣🤣🤣🤣🤣🤣🤣

    • @bodgitandleggitgarage
      @bodgitandleggitgarage 6 років тому

      New Level Auto I will tell you why Keith G103 don't need to say anymore that explains everything😁😁😁😁

  • @vincentpirato7183
    @vincentpirato7183 2 роки тому

    Excellent info. Thanks. Aside from soaking with break free, will the egr bolts free up easier with hot engine block or cold?

  • @joegarcia6276
    @joegarcia6276 5 місяців тому

    What was the fix

  • @alfredoduenasjr316
    @alfredoduenasjr316 5 років тому +2

    What is the ball park price on this type of job

  • @NextLevelAutoDiagnostics
    @NextLevelAutoDiagnostics Рік тому

    I know this is an old video, but what scanner you're using to command that vacuum on the solenoid @ 3:26

  • @80skid83
    @80skid83 Рік тому +1

    Getting this code too, seems my egr was unplugged? Just got it back from a garage who have done extensive work on my vehicle and when they put it all back I'm now getting eml . Fortunately I have my own scanner so decided to investigate and I'm getting the same code as in the title. Egr valve on my vehicle extremely difficult to get to, did manage to see that it was unplugged managed to get my hand in there just about. Cleared code nothing for few hours and on again. Cleared code again and nothing again so far after a few hours. Hopefully this will be enough or its engine out again as no other way to get to it

    • @themechanic6117
      @themechanic6117  Рік тому

      Sorry to hear that, hopefully the problem is fixed

    • @80skid83
      @80skid83 Рік тому

      @@themechanic6117 cheers

    • @80skid83
      @80skid83 Рік тому +1

      ​@The mech a nic today I have driven a full day and light hasn't returned, thank you for your comment sir .
      Hopefully this helps somebody

  • @redhead6351
    @redhead6351 Рік тому

    if its ot the egr valve thenwhat else am i not seeing because i want this fixed thanks alot and can u be detailed when u showing it thanks

  • @jefferymilton8590
    @jefferymilton8590 3 роки тому

    I need my car fix have same probably

  • @flowrob6861
    @flowrob6861 4 роки тому +1

    We had the code . Found 3 broken hoses . Fixed them & codes

  • @EXOVCDS
    @EXOVCDS 6 років тому +3

    LOL... Eric O.
    I think I was the first to use his face in a video! =)

    • @themechanic6117
      @themechanic6117  6 років тому +1

      Thomas EXOVCDS yeah I noticed it one of your videos 😂

  • @paulkazjack
    @paulkazjack 4 роки тому +2

    How does the ECU know there's a fault with the Egr ? In other words how does it know there's a blockage?

    • @themechanic6117
      @themechanic6117  4 роки тому +2

      It can use the oxygen sensors to detect if theres egr flow

    • @paulkazjack
      @paulkazjack 4 роки тому +1

      @@themechanic6117 so it must detect RISE in oxygen then because egr gas is inert.

    • @themechanic6117
      @themechanic6117  4 роки тому +3

      @@paulkazjack yes I believe the computer is looking for a change from the oxygen sensor once the egr is opened. Much how some cars look for a change from the fuel tank pressure sensor once a purge valve opens to determine if there's a problem.

    • @priyajakatdar3759
      @priyajakatdar3759 3 роки тому +1

      It can tell if gas is flowing or not using one of several different methods: 1) Temperature sensor after the EGR valve plunger used by the ECU to measure a rise in temperature when exhaust flows through it 2) Differential pressure sensor measures the difference in pressure before and after the EGR valve so the ECU knows whether gas is flowing 3) MAP sensor measures rise in pressure from the flow of exhaust gas and informs the ECU.

  • @Venom-jl5np
    @Venom-jl5np Рік тому

    hi i have a bmw x3 2.0d 2008 and i got the same code as you i checked the EGR valve and it was clean should i try the same thing you did ?

  • @raybin6873
    @raybin6873 4 роки тому

    My 1997 Rodeo 4 cyl infrequently has PO401 code - insufficient flow - have cleaned EGR passageway and replaced EGR valve. There is no blockage/restriction - this vehicle doesn't have flow monitoring sensors (like Fords do) - how does computer monitor EGR flow?

  • @Frayicz21
    @Frayicz21 2 роки тому

    i got this code when i put in a new flex pipe on the exhaust system? Any reason why?

  • @bashalakraa4035
    @bashalakraa4035 5 років тому +1

    Hi mate please I've got in my car mk5 golf gti dsg diesel 2.0
    Emissions workshop
    And i put the car through code reader
    And the code is
    Egr system insufficient flow p0401
    Do you think should i change the EGR valve?

    • @themechanic6117
      @themechanic6117  5 років тому +1

      First check to see if the system is clogged.

  • @Antattack22
    @Antattack22 4 роки тому +1

    Dumb question can you un plug it and roll with it till you can fix it curious i get that same code on my pontiac grand am its a 2004

    • @themechanic6117
      @themechanic6117  4 роки тому +2

      If you plug it your car will still throw a check engine light. I think one thats stuck closed is better than one thats stuck open

  • @Mrgetbusy1
    @Mrgetbusy1 3 роки тому

    I have a 04 impala with the same 3.4, replaced the egr valve then just cleaned it yesterday when I replaced the egr valve it ran good for the night then the next day it was acting funny again, I cleaned everything out the other day how you did in the video n the code came back n it sounds clogged again what should my next step be?

  • @johnlira3316
    @johnlira3316 5 років тому +2

    Can a bad one cause the car to smoke??

    • @themechanic6117
      @themechanic6117  5 років тому +1

      Im not sure but if i had to take a guess id say no

    • @dorinriki
      @dorinriki 4 роки тому +1

      Yes--a problem with my EGR valve made my car emit white smoke for a short time when I started the engine.

    • @paulkazjack
      @paulkazjack 4 роки тому +1

      No it can't.

  • @jonnybeepeterson8561
    @jonnybeepeterson8561 3 роки тому

    my EGR valve on my 03 mazda tribute 3.0 keeps blowing a hole out of the EGR valve...!!!???

  • @SwayNotZay
    @SwayNotZay 3 роки тому +1

    What scanner do you use ?

    • @themechanic6117
      @themechanic6117  3 роки тому

      Launch diagun 4
      And i have a bosch obd2 scanner

  • @olenaerhardt7725
    @olenaerhardt7725 3 роки тому

    I replaced the EGR Valve (and gasket of course), but didn't know that the EGR Valve ports (passages) should be cleaned, so I need to do it now. Throttle Body I removed and cleaned before. The car idles high on start and gave code P0401. I want to use large brushes for ports and carb Cleaner to spray inside of the ports, but can it be any Carb Cleaner? I have CRC Throttle Body & Air-Intake Cleaner, WD-40 Carb/Throttle Body & parts Cleaner, and and Gumout Carb/Choke & parts Cleaner (on Gumout is says: "not recommended for fuel
    injected vehicles"). Not sure which one to use. The car is 2001 Saturn SL2, it has fuel injectors of course. But if you have Carburator it is not fuel injected vehicle (I believe those mostly motorcycles, aircrafts, and some diesel cars). Did you disconnect the battery to do this work? Is it recommended? I think it takes longer if you disconnect the battery than you erase the codes to reset the tests, right? Thank you for the very informative film, as always.

    • @gregorykusiak5424
      @gregorykusiak5424 2 роки тому +1

      The valve(and flow sensor) were probably fine, save for cleaning. On these engines, it’s the passage on the manifold that clogs up mostly, and it’s a good idea to try to soften up the gunk in it with a penetrant lube (I like seafoam’s deep creep) before resorting to carb cleaner, a brush and air to blow things out. (The ones they make for steel straws work well on the manifold passage, and just about any bottle brush for the line off the exhaust manifold is good too. A healthy spray of carb cleaner for the latter is fine)
      The penetrant is key, to lube up the pintle of the valve itself - let it soak in, soften things up and displace whatever might be preventing the valve to open fully or close properly or move at all before carb cleaning it.

    • @olenaerhardt7725
      @olenaerhardt7725 2 роки тому

      @@gregorykusiak5424 Thank you. I also think it is better to remove the exhaust manifold and clean the passages properly w/ brushes.

    • @gregorykusiak5424
      @gregorykusiak5424 2 роки тому +2

      @@olenaerhardt7725 intake manifold particularly. The engine doesn’t run correctly without EGR, usually leading to over fuelling, causing carboning of the exhaust. A vicious little cycle.

  • @Mr.Frost181
    @Mr.Frost181 5 років тому +2

    What is the cause of white smoke through the exhaust

    • @themechanic6117
      @themechanic6117  5 років тому

      That's usually antifreeze being burned.might be a bad head gasket

    • @Mr.Frost181
      @Mr.Frost181 5 років тому

      Heads an head gaskets has been replaced an fix

    • @Mr.Frost181
      @Mr.Frost181 5 років тому

      @@themechanic6117 both heads has been rebuilt an head gaskets has been replaced

    • @themechanic6117
      @themechanic6117  5 років тому

      When and who did It?

    • @johnlira3316
      @johnlira3316 5 років тому

      Mr. Frost 181 did you find the problem my car is doing the same coolant level is ok no water in oil. Some say bad EGR can cause it to smoke

  • @watchinstuffx82
    @watchinstuffx82 3 роки тому +1

    Milwaukee ftw

  • @raygarcia9482
    @raygarcia9482 6 років тому +2

    Show 98 s10

  • @clarenceyoung4701
    @clarenceyoung4701 3 роки тому

    Is this gonna cause a lose oh HP or anything? Or is this something that you shouldn't worry too much about? I haven't been able to clear my code. Idk if I can do all this. Scared to break or screw up my car.

    • @themechanic6117
      @themechanic6117  3 роки тому

      I dont think itll cause loss of hp, if the egr system is clogged or not working and imagine it'll just cause a check engine light. Unless the egr is stuck open, then it can cause long cranks or crank and stall situation. Also lean codes and driveability issues

  • @mayneyeh7229
    @mayneyeh7229 4 роки тому

    I got are 1hz 79series engine lights on guess it's the egr, use to much fuel lost power & bad idle, any idea on what I should do without taking it to workshop?

    • @themechanic6117
      @themechanic6117  4 роки тому +1

      Remove the egr ans see if its stuck open

    • @mayneyeh7229
      @mayneyeh7229 4 роки тому

      @@themechanic6117 ok yeah I deleted the egr system and change the sensor the engine lights off but still misses abit

    • @themechanic6117
      @themechanic6117  4 роки тому

      @@mayneyeh7229 why did you delete the EGR? The car needs it

  • @maximumhd6331
    @maximumhd6331 4 роки тому

    my eclipse gt after 3500 rpm there is no more acceleration. my cats a re hollowed out and not clogged

  • @olenaerhardt7725
    @olenaerhardt7725 3 роки тому

    My EGR valve came w/ a metal gasket, it has holes in it and those holes are surrounded by circles. Does someone know if that gasket goes w/circles curved up or down? Does it matter at all? I would appreciate any opinion on this.

    • @themechanic6117
      @themechanic6117  3 роки тому +1

      I don't think it matters. The gasket should seal any way you put it on. Typically I install it the way the old one came off

    • @olenaerhardt7725
      @olenaerhardt7725 3 роки тому

      @@themechanic6117 Thank you. On the picture Amazon it shows curve down, but the gasket is shown separately. When I opened a new valve I thought I'll remember how it was (I installed it like 5-6 months ago). I'm still looking for a solution to remove P0446, so decided to clean passages for that new EGR, here this question came, if it is the right position for the gasket (it was curves down). Now I installed it curves up, since the base on which that EGR is sitting is smooth, so it looked more logical for me. That is not big deal, I'll reinstall (I think it was initially installed better). I believe the original part had a paper gasket. In general probably that car has more fundamental problem, like I need to remove and clean Intake and Exhaust Manifolds. I can imagine somehow Exhaust, but the Intake a complete nightmare for me, though on that mileage (~130K) it should be done anyway. Need to read more how to do it. Thank you again for the great films you make.

    • @themechanic6117
      @themechanic6117  3 роки тому +1

      There must be a different issues that's causing your p0446. I don't think it's the gasket. I'm sure it'll seal either way

    • @themechanic6117
      @themechanic6117  3 роки тому +1

      P0446 has to do with the vent valve in the evap system.... that has nothing to do with the EGR system. If you look up the two parts you'll see the vent valve is completely different from the egr. You may have a bad vent valve causing your code

    • @olenaerhardt7725
      @olenaerhardt7725 3 роки тому

      @@themechanic6117 That Vent Valve (Vapor Canister Vent Solenoid) I replaced also like 4 month ago, I hoped it will help. It is close to the fill cup, above the rear wheel on passenger side, I found it and replaced it. Nothing. It could be also Charcoal Canister, which is sitting atop of Fuel Tank and you need to drop the tank in Saturns. I've heard it is not so bad, but I don't know many things about it. There also is a Fuel Pump sensor in that area as well. Anyway I know those 3 projects should be done anyway on 130K (2 manifolds and the Canister), Saturn is very good car, if to do all those projects, it would run like new. Thank you for clarification on EGR and your concerns.

  •  4 роки тому +1

    So your saying " You like a clean hole " ?

  • @mikeautostudent5562
    @mikeautostudent5562 3 роки тому

    Your video is good but Your music is annoying and sort of being loud.