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I am currently experiencing an issue . I don’t know what’s wrong , I drove the car all weekend and it handled perfect , no check engine no shaking nothing except driving perfectly . Yesterday at night going home I started to have the issue and it wasn’t that big but today morning it started shaking and idling wrong and it starts making a noise . But when I hit 55mph it drives decent but response is bad . when I slow down it starts to shake violently . I am worried , I am scared . I don’t know the issue . I had to leave it cause I was scared of driving it . Had to go to work with another car .
Good call not driving the car with those codes present. I would assume the check engine light would be on, maybe even flashing?
What is the history with the car, have you done ANYTHING to it recently, even switching gas stations on fill up?
I looked up those codes and theres not much direction other than to check self-adaptation of mixture formation. Im not sure what that means or how to do it.
I would first perform a visual inspection of the the complete intake system. Remove the air filter box, check the seals, check the MAF, maybe even remove it and check the seal under it. I removed everything just to give things a good cleaning and its pretty easy to do. I've read that a leak can cause the car to add more fuel to compensate and then the O2 sensors read it rich. I could be wrong.
My thinking its on both cyl banks so check everything before the throttle body. I wont post all the codes, just the two i focused on and what i would check first.
Good call not driving the car with those codes present. I would assume the check engine light would be on, maybe even flashing?
What is the history with the car, have you done ANYTHING to it recently, even switching gas stations on fill up?
I looked up those codes and theres not much direction other than to check self-adaptation of mixture formation. Im not sure what that means or how to do it.
I would first perform a visual inspection of the the complete intake system. Remove the air filter box, check the seals, check the MAF, maybe even remove it and check the seal under it. I removed everything just to give things a good cleaning and its pretty easy to do. I've read that a leak can cause the car to add more fuel to compensate and then the O2 sensors read it rich. I could be wrong.
My thinking its on both cyl banks so check everything before the throttle body. I wont post all the codes, just the two i focused on and what i would check first.
yes it was flashing , but then stayed solid . I have switched gas stations a lot . Traveled a lot this weekend . I didn’t do nothing different . I had bad coil packs and switched them back to the genuine part and the check engine light didn’t come back on so I assumed it was good . I doubt the coil packs are bad I checked them a week ago . The MAF is on the throttle body right? Would the MAF cause misfire? Or is that a separate issue. Also yes I have the M272 engine
thank you for the link , I’ll clean it and check the MAF when I get home . About the misfire? Does that correlate to the MAF? I doubt it does ? Maybe spark/ coil packs?
I found something related to the running rich codes. there are a few things to check. When I first saw the codes I was expecting to see something related to the intake manifold, one of the last figures below shows a hose disconnected from the manifold. May want to check all the vacuum lines around the intake manifold. Also inspect the crankcase breather hose that goes from the breather cover to the throttle body.
When reinstalling the air filter box I like to apply a silicone lube around the seal and on all the nubs that the box clips to. Any silicone grease, nothing petroleum based. Dont forget to attach the secondary air pump hose back.
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