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Something BAD is happening to my car since monday night. I noticed when I turn the wheel and get on it, either direction i hear a popping noise and you can feel it in the floorboard. I thought something had come loose like the tranny mount or the exhaust was smacking the floorpan. Put it up on the ramps yesterday and felt around for everything I thought was possible to be loose, and everything was tight.
Well then it started making the popping (sounds like firecrackers going off in a muffled jar or something) under any load, like 3/4 throttle or more, especially WOT. So I was on a back road yesterday and stuck my head out the window and WOT it, sounded like MAJOR knocking or pinging (I don't know the difference) coming from my driver's side, as I heard it clearly. It knocks so hard that it causes a loss of power, like the engine shutters and it shakes the car. I can also feel the popping in my feet. The WOT performance also seems way worse than before.
This is also the same side that has the noisy lifters that clack when you first start the car up after its been sitting for around 45minutes to an hour. So I don't know if its this problem getting worse.
No SES light is getting set which surprises me because I'd expect the P0300 code to get set.
Here is all the things I think it COULD be
1)Bent pushrod and/or rocker arm
2)bad lifters
3)clogged cat
The P0420 code was set around 3 weeks ago for about a day, I took it to autozone and they scanned it. I started the car up the next morning to go to work and the SES light stayed on for about 15 minutes, then turned off and has not been on since. The cat is one of those 3" cheap exhaust shop deals because when my O.E. one got smashed by something, carmax had it replaced when I was under that 30 day free bumper-to-bumper warranty.
Also - I orginally thought it was bad gas, filled up monday, and I've always ran 87 octane gas in the car since I bought it home. So the tank ran out last night and I filled up from a different station with 89 octane. Same problems.
The problem especially pops (passengers say they can feel it in their feet as well) when you start from a dead stop, at anything above 1/4 throttle. When you're rolling on, you have to give it at least 3/4 throttle for it to start its crap. WOT it and it happens everytime, sometimes worse than others.
It also seems that you have to push the gas harder for the tranny to downshift. I don't know if thats my imagination. It SEEMS like the PCM is retarding the timing because of the sound of the car.
The odd thing is, if you revv the car up when it is not in gear, nothing is wrong at all. Only when the transmission is engaged.
Well then it started making the popping (sounds like firecrackers going off in a muffled jar or something) under any load, like 3/4 throttle or more, especially WOT. So I was on a back road yesterday and stuck my head out the window and WOT it, sounded like MAJOR knocking or pinging (I don't know the difference) coming from my driver's side, as I heard it clearly. It knocks so hard that it causes a loss of power, like the engine shutters and it shakes the car. I can also feel the popping in my feet. The WOT performance also seems way worse than before.
This is also the same side that has the noisy lifters that clack when you first start the car up after its been sitting for around 45minutes to an hour. So I don't know if its this problem getting worse.
No SES light is getting set which surprises me because I'd expect the P0300 code to get set.
Here is all the things I think it COULD be
1)Bent pushrod and/or rocker arm
2)bad lifters
3)clogged cat
The P0420 code was set around 3 weeks ago for about a day, I took it to autozone and they scanned it. I started the car up the next morning to go to work and the SES light stayed on for about 15 minutes, then turned off and has not been on since. The cat is one of those 3" cheap exhaust shop deals because when my O.E. one got smashed by something, carmax had it replaced when I was under that 30 day free bumper-to-bumper warranty.
Also - I orginally thought it was bad gas, filled up monday, and I've always ran 87 octane gas in the car since I bought it home. So the tank ran out last night and I filled up from a different station with 89 octane. Same problems.
The problem especially pops (passengers say they can feel it in their feet as well) when you start from a dead stop, at anything above 1/4 throttle. When you're rolling on, you have to give it at least 3/4 throttle for it to start its crap. WOT it and it happens everytime, sometimes worse than others.
It also seems that you have to push the gas harder for the tranny to downshift. I don't know if thats my imagination. It SEEMS like the PCM is retarding the timing because of the sound of the car.
The odd thing is, if you revv the car up when it is not in gear, nothing is wrong at all. Only when the transmission is engaged.
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