My supercharged Mustang is misfiring, I think my catalytic converter is out...
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- Опубліковано 30 вер 2024
- Well I strive to bring you all the fun moments of owing my boosted mustang and sometimes things happen that aren't so fun today I try and figure out what happened with my supercharged 2019 Mustang GT after a flashing check engine light appeared during a race against a 2020 Dodge Charger Hellcat Daytona. The code is P0300 it reads as a random multiple cylinder misfire. The car drives fine but I am un easy about pushing her hard till I have some idea of what caused the code to appear.
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**something breaks in the Mustang**
*HEY GUYS, CHRISFIX HERE!*
Poor charger didn’t deserve that beating
Hemi vs. Ninja it’s stock it did good
Its a 5.7 stock 🤣
Are you noticing any sulfur/rotten eggs odor? That’s another telltale sign of cat failure. Also what is your vacuum pressure at idle?
I got the same check engine light and it flashes when I would get on it and pass 3,500 rpm, it told me it was cylinder 2 that was misfiring and it says online that the cats where being damaged so basically the car goes into limp mode, so it turned out that I needed to replace all of the spark plugs and now it runs back to normal.
you have a manual or auto?
Did you get a low oil preasure light too ? cause i have my car in the dealership right now and its doing that
Rattle might be from the exhaust maybe something wasn’t tightened all the way after you changed it back to stock
That's what I thought. He just changed his exhaust & all the vibration from running it hard may have loosened it up.
Love how my boy rush gives the smoke out to anyone out in these streets😂💯
Fernando Lopez he’s gangster
I know the problem bro, it’s because it’s a ford😂💀
Oh you got jokes today 🤕
🤣🤣🤣
First. Check spark plugs for signs of something else
Second. Higher flow cats. You have too much power.
Third. Get a custom tune. PBD or Lund
Forth. Please upgrade OPG's
Fifth. Run thicker oil. 5w50, unless you already are
Sixth. Have fun! Stay safe!
Also, check to see if you are burning oil. If you are. Compression test needs to happen. Oil in combustion chamber from blow by can soak your plugs and cause misfires. that means oil is getting past the rings. You would see white smoke from exhaust more than likely. Hopefully its just cats over temp and only throwing a code when they are too hot but they may be breaking up at this point.
@10:21 .... that’s called “Social Distancing”. 😂
That rattling noise Sounds like your catalytic converter braking up
you have the stock exhaust on bro pushing all that power that’s the equivalent to you running a marathon with a elevation mask you engine needs to breathe
This exact thing happened to me last week bro... it’s one of your coils, the smoke out of the exhaust is from the fuel bypassing combustion and spewing into your exhaust system. If you changed the spark plugs and accidentally placed that bad coil into another cylinder it’s going to read Multiple misfire too. While it’s idling disconnect the wire to coil on each cylinder and watch for the one that causes no change to the RPM.
He can take it into Ford and have them do a power balance test they will tell him which cylinder ect
Is this an expensive fix?
If your in e 85 maybe it ruined a O2 but your on whipple tune I seen and heard nightmares with there tunes.
You remember all those cool pops and burbles you could hear really well with your corsa extremes? That's a no go with cats. Your cats are doneso.
I always have heard that crackle tunes annihilate cats
@@mustang2O2O I mean you literally have explosions happening at the point where it should really just be hot gas going through the cats lol
Broo come on it’s telling you it’s having a cylinder misfire obviously it’s gonna be that your not gonna be able to feel the power difference if it’s just one misfire
I believe its the cats too... especially since your car runs rich on deceleration with all the pops and crackles. That will cause the cats to clog and fail.
The rattle could be pieces of your cat bouncing around inside it's chamber.
Them fat pops probably made the cat blow up lol
Since it’s a P0300 and not a 301-308 I would rule out spark plugs or wires coil packs or injectors. Those tend to isolate a cylinder . Normally this is a fuel issue, likely low fuel pressure. Try and log some runs to see your duty cycle on injectors .
The rattling almost sounds like an exhaust leak . Did you replace the exhaust gaskets , they are usually one time use if crushed .
Edit: you might need to get retuned with stock exhaust . Air in vs Air out has changed so the fuelling might be off now. But then again I’m not a mechanic just know that’s what happened with my Subaru .
01GTB Daily he’s rocking with stock exhaust now
10:12 that's why I subscribed 😂 love your content rush
The inside of the cat is dead. Put your corsa back on bro!!!! Yes there was smoke coming out of your exhaust when you pulled over and rev’d
LMAOOO it’s amazing how rush just smokes a random guy for no reason
“Ohh I’ll smoke u” comedy
Soo you had a misfire and didn’t deal with it and burned out your cats...
Lmao saw him coming from a mile away lmao soon as i saw him behind you i was like hes going to try and run it
May need to change out your spark plugs or you could have compression loss in one of your cylinders.
I doubt if it is the cats. When a cat goes bad you will get either a P0420 or P0430 code or both. The two codes will depend on which side of the engine it comes from. If you get both codes, then neither cat is performing as it should. Those codes to be specific identifies the problem as "Catalytic Converter below threshold". I own a supercharged Mustang. Although it is only a V6, that produces about 450 HP to the tire, the factory cats weren't designed for that power level and I smoked both of them. I solved the problem with Kooks Green Cats and installed an exhaust system that is bigger than stock. What you have is a P0300 which is a random misfire. The causes of your problem are as follows:
Faulty or worn spark plugs *
Faulty spark plug wires or coils *
Faulty fuel injector *
Vacuum leak
Low fuel pressure
Camshaft sensor defective
Crankshaft sensor defective
Engine timing off (tuning related)
Leaking head gasket
Low engine compression (Possibly caused by spark knock)
Poor quality fuel
The first thing I would do is check to make sure there's no damage the motor. The rattle you hear is the exhaust system rattling as a result of an idle that isn't smooth. The first thing I would do is a compression test and then I would look at the cylinders with a borescope camera. The borescope camera isn't expensive. What you're looking to do is making sure you didn't damage a piston as a result of spark knock. If you can eliminate damage from knock, look at the other causes on the list. Good luck to you. The list above will be a good starting point.
Check the spark plugs that could be the reason for the misfire
Got a engine misfire code on my 18 gt as well, man these cars are built like toys. Shame.
10:15 rush saw an RT Drod in his rear view and knew it was go time LMAOO
This is how you check your cats. With the car at operating temperature, shoot an infrared thermometer at the exhaust piping in front of and behind the cat. Compare the two readings. Your temps should be higher coming out of the cat, and the temperature differential shouldn't be significantly different from the other cat.
Just get cats deletes or headers DO NOT GET "HIGH FLOW CATS" you are just wasting money.
My mustang has that same rattle but no codes yet. I'm pretty sure my cats are starting to die on me as well. Boosted life
1. It's a F.O.R.D
2. Side boo put some voodoo on that mustang 😂🤣😆😁
3. Keep this good content coming👍👍👍
Solution to all the problems, move outta Cali
@7:04 that voice crack tho xD
StrugglePuff 😂
I took the cats off of my 2017 whipple GT with the stage 2 and it was ridiculously loud with my Roush axle back and x pipe resonator delete setup. My friends could here my car 5-6 blocks away in the middle of the night and it was honestly nascar level loud. But I added a Magnaflow tru x resonated x pipe today and the car is extremely quiet now. It sounds like it is a completely stock car with just roush axle backs and no other exhaust mods. I recommend it for you to prevent cat failure and if you want your car to sound stock for cops in Cali.
Dude never keep a stock exhaust with that setup, learned the hard way.
He was forced to by the cop's
@@karlhopkins713 Well, he'll be forced to pay a lot of money for a new engine if he doesn't remove his cats. Hard price to pay living in California, but if you want big and reliable power you have to remove all of the restrictions from your exhaust so you don't burn up your motor. Not worth the risk.
@@jonasblane2157 i agree cat delete ftw
I know what's wrong with your car bro.. you bought a ford!😝
all jokes aside, your exhaust is way too restrictive for the power you're putting out. you cant run it that hard without messing up everything from your engine getting a bent push rod from too much built up pressure to destroying all stock exhaust following headers
I’m sorry to say but your mustang...has Coronavirus But I expect a full recovery
BTW...Love the lesson you taught the charger. I taught a Hellcat Charger a lesson a couple nights ago😈
Bro the hellcat was stock, 4 door sedan, and had passengers in the back seat. The races were pretty close and in my opinion the hellcat took most runs. I'm a fan of both. Don't be a fan boy and brag about a race when the mustang has a stage 2 supercharger.
Ivan Pena who problem is that
Ivan Pena right? Barely lost to a hellcat the other day in my van. But I’m 100% stock N/A and he’s got a supercharger delete. I had 7 ppl with me and still kept up. Hell, we probably weigh the same tbh. Sad
Check the o2 sensors. I had the exact same code. Took it to the dealer but they wouldn't touch it since it was modded. Took it to a performance shop and they found my main bank 1 sensor 1 o2 sensor was fried. Got a new one and it went away.
I had the same exact thing you got with the check engine light when I did a few runs. I pulled over turned off the car and turned it back on and it was totally fine. Never had anything come out the exhaust like you have. But that was maybe about 3 months ago. It’s more than likely a one time thing.
Same thing here...p0300...on a high temp humid day. Had just filled up on tank of cheap gas 93. Car runs fine cleared code hope it is a bad fuel issue. cel not coming back on yet. 19 PP1 only 13k mileage.
Dude unwrap that part around the license plate on the back bumper. Looks weird there. Do you like it?
Speed & Torque 101 he said he is getting euro tails, so he is waiting to see how it looks with that before unwrapping it
@@cadenzhou5860 hmm. I'm still not sure, but I guess we shall see. Thanks for the update 👍
Mexico freeway 😂
I have found from experience the more power you throw at your car the more unreliable it becomes. Since I boosted my stang I have had to fix a boost leak and I had to fix a blown head gasket. I'm sure down the road something else will break. I'm making 730whp.
I'd be worried about the stock exhaust with that much power. The flow is just to restricted and makes the computers freakout
Incorrect air/fuel mixture, incorrect timing, or misfiring spark plugs could lead to a catalytic converter failure or worse.
Because the catalytic converter gets very hot, this unburned fuel can ignite inside the converter and could result in a partial or complete melt down of the ceramic catalyst.
7:04 his voice cracks when he says engine bay 😂 love your channel rush
Multiple misfire is p0300. Flashing is active misfire. Which is bad. These misfire will burn up your cats and may cause other damage. I have this same problem with my roush stage 2 supercharged. Roush cannot fix it. Going to sue.
C'mon bro, this charger driver is disrespecting the RT gang. RT's are big beautiful hemis, but you gotta know your place man. FROM THE FACTORY the mustang GT is faster than an RT, and he's claiming he's going to smoke you. Then to add to his stupidity you have a supercharger and put buses on him
I'm gonna say it is the cats.. Boost and cats don't mix.. Most GEN3 guys who are running boostt either have cat deletes or Longtubes with NO cats.. At minimum, I'd go with MAK or Lethal Performance cat deletes and a REAL tune.. You are missing power by not going with a real tuner.. Your car also sounds off.. It isn't suppose to sound the way it sounds.. Something is off..
Hey I just bought a Stang a few weeks ago and I got the same code!!! Took it to a dealer and they say it didn’t read ANYTHING!!! Told me just to keep driving it until it shows again… did you ever find out wat yours was?
I got the p0300 and suspected bad gas. Car runs fine cleared code 400 miles ago no return code yet...hope it ok now!😊
For what these cars are and adding a supercharger. The Cats are to close to the cylinder heads. My 2015 Roush stage3 the cat temps are almost 2k deg on a hard pull.
When you just cruising along and all of a sudden You put three buses on somebody 😂😂😂
Stock Whipple tune runs rich af to protect the engine but not rich enough to cool the cats properly so 9 times out of 10 it’s a bad cat all that back pressure isn’t helping either. Maybe having the Corsa exhaust on helped it but after putting that restrictive stock exhaust back on probably sent it all the way
You served that Charger some Gapplebee's curbside service!?!
Definitely need to either get rid of cats or get high flow cats ASAP because of your setup with the supercharger
Don't see why anyone with a boosted car runs cats
Plenty of people do, either for emission reasons or sound quality. The problem is that the car is running too rich, and the pops and burbles need to be minimized..
mine just did same... p0300 ... also today showed a 302 and 304 .. i think my cats are bad as well as o2 sensor
I have cats deleted and mine do this at around 120 under load. But the car runs fine just regular driving. Did you ever find out the problem?
Great video! I am having a similar issue. I just supercharged my v6 challenger and the check engine light is popping on and off as I drive. It has been doing this for a few days. The guys who installed it said I needed to get mid-pipes because my right exhaust is running way hotter than the left side. I wonder if that is causing the check engine light to pop up? Also, I noticed that the plastic cover over my shifter was hot to the touch (in the interior of the car); not sure what that would mean. Any thoughts or ideas would be supper helpful. I appreciate any and all input. Thanks for reading! =)
i think its the coil packs since the spark plugs were changed
I know this an old video but if cats are failing I would use caution. Meaning the cats are so close to the heads that the substrate can be sucked back into the cylinders.
You still racing the challenger? 👀 I’m down for some runs in my mk7.5 R manual or 5th gen camaro ss auto. Lol both not stock
Exhaust makes a big difference in boosted cars
Dammmnn time to go with some long tubes playboy !!!!!!!!!!
2019 manual whipple here same set up as you. Bought the car new from lebanon ford with whipple tune on it cats didn't last 2 thousand miles. The pops are cool and all but im pretty sure thats what took out my cats. Got some a free flowing exhaust mod and new PBD tune and pops are gone and car running great. When I removed my cats the pass side was its had fallen apart.
george washington how can you stand the rasp 😓
Wait do you own a Mustang and a Challenger? I’m confused.
Yeah get rid of the cats or get high flow aftermarket cats, they are probably gone because of the burble tune or just the high power and air flow
Slapping boost on them stock internals, rods and pistons rattling around the corner.
"Pop" or "burble" tunes are known to cause excessive wear on cats due to excess raw fuel being dumped into them, could be a contributing factor.
100%
Flashing is bad. Yeah that is a active misfire bad for your engine.
So did it end up being the cats ?? My car is literally doing the same thing and making the same exact rattle sound
I had that same rattle under my car but mine turned out to be a problem with my timing chain.
Yea definitely melted the cats, just delete them
Drops camera and gaps him 😂 lol
I don't see how anything past your header could cause a misfire
If you are unsure about the cats jack it up when cold and pound on the cats. If they rattle there shot.
You have a loose or bad spark plug,or wire. if you keep driving it will eventually throw the code for which cylinder. Pull your plugs I'd bet money one is a tad loose or a wire os bad. Literally just went through this on my wife's turbo 5.0.
Edit: bad cats will almost always throw a seperate code as well as the misfire code.
get high flow cats on AM but thats the problem. nothing to worry about .
Another junk ford motor. I’m sure you can buy another.
That can cause engine failure... Get some highflows or remove them asap
I saw that charger sneaking up ...lol , well done bro
Race action 10:15
Not weird for one side to go and its misfiring because of the change in backpressure. Might want to have your tune updated because thats how i fixed my car going through cats. But i went with stock cats again try getting some race cats on that beast.
Just take it easy until your get new cats and have your tuner look at it again.
Cracked Honeycomb, is the rattle
Everytime one of my boosted 19s engines blew it started with P0300 and progressed...I've seen it run clean above idle to redline with 3 cylinders down due to transition to DI blowing oil off half the plugs it was insane....
I kept blowing engines till I pulled my cats but if they are pulling you over for a catback SHIT removing the cats makes its NUTS loud....
I'd definitely get them off at least yours probably broke, many melt then block the exhaust and pop engine ( this is what was happening to me )...
Good luck
any pops/ backfires from exhaust will kill the catalytic converters, possibly whats causing CEL. They need to be removed
It could be your fuel injectors going bad
I am have the same problem but I have a. Whip pole supercharge
Remove the cats or you will have a major problem soon.
Looks stage 3 whipple, just had a stage 1 kit melt a cat to the point that it went back into the cylinder and blew the rings out in cyl 7. Compression was at 60psi, smoke on start ups, knocking noise. New longblock installed along with revised whipple tune and bank 2 cat and upstream sensor.
High recommend longtube headers. No cats.
Definitely a cat
Motorcraft plugs ....gapped to 050
Not new that the Coyote is not reliable! Hoping it is OK.
Oh wait...you ve never reconfigured the injection after your exhaust change?
Did the cat delete fix the misfire!!???
Do you have an issue where if you turn the interior light levels all the way to max then the El Wire kinda of flickers? I have to turn mine down just a little above max to make it not do that. I was just wondering if my power adapter was somehow faulty or if you ran in to the same thing.
“Did you guys see anything?”
Bruh, you edit this shit before we see it... DID YOU SEE ANYTHING? THEN WE DIDNT SEE ANYTHING....
Ahahah 😂😂 I was trying to include you guys in the action jeeze
Rush Shift just busting your chops. I enjoy the channel!
Hey. Did you ever get to the bottom of this as to what the cause was? Sorry if I missed a follow up video. I have a 2018 GT with Roushcharger and only 7500 miles. Throwing a P0300 code, dealer checked plugs and said they were fine, sent computer info to Roush and they flashed the PCM. One day later, CEL came back on. My car, from what I know, is running perfectly fine otherwise.