Rough running/misfire, only at a specific time
Thread Starter
Registered User
Joined: Feb 2014
Posts: 1
Likes: 0
Rough running/misfire, only at a specific time Hello everyone, so I've been part of the forums for a while, and most issues I have had they've been covered, but this is a hard one to explain.
I have a 2002 Camaro Z28 LS1 6spd, 78k on the clock. The car fouls out its bank 1 o2 sensor quite often so normally I would go there, but this is after a recent change of the o2 sensor last month.
The car runs perfectly fine, no check engine lights when the car is cold, like when its been sitting overnight and you haven't touched it in a while. And you can drive it hours with no issues. Recently, what I've found is if I start the car, and drive, and say go to get gas, or a coffee, I get back in the car, and it will barely move because it runs so rough. And this will continue until the car is cooled down entirely. Then the car will run as if nothing was wrong with it.
I just replaced the spark plugs, wires, and did the o2 sensor a month ago. This misfiring only occurs if you turn the car off after its been on, even if the car is not even warmed up all the way.
If anyone has any insight, and can help me where to look, that would be awesome, as I'm completely lost right now as to why the car is doing this.
I have a 2002 Camaro Z28 LS1 6spd, 78k on the clock. The car fouls out its bank 1 o2 sensor quite often so normally I would go there, but this is after a recent change of the o2 sensor last month.
The car runs perfectly fine, no check engine lights when the car is cold, like when its been sitting overnight and you haven't touched it in a while. And you can drive it hours with no issues. Recently, what I've found is if I start the car, and drive, and say go to get gas, or a coffee, I get back in the car, and it will barely move because it runs so rough. And this will continue until the car is cooled down entirely. Then the car will run as if nothing was wrong with it.
I just replaced the spark plugs, wires, and did the o2 sensor a month ago. This misfiring only occurs if you turn the car off after its been on, even if the car is not even warmed up all the way.
If anyone has any insight, and can help me where to look, that would be awesome, as I'm completely lost right now as to why the car is doing this.
Jeez man.....if you are burning up 02 sensors in just a couple months.....I would say you have a PCM problem.
Get a scan with an OBDII scanner while the engine is running and up to operating temp.....and by someone who knows what they are looking at to read it all properly.
.
Get a scan with an OBDII scanner while the engine is running and up to operating temp.....and by someone who knows what they are looking at to read it all properly.
.
The car runs perfectly fine, no check engine lights when the car is cold, like when its been sitting overnight and you haven't touched it in a while. And you can drive it hours with no issues. Recently, what I've found is if I start the car, and drive, and say go to get gas, or a coffee, I get back in the car, and it will barely move because it runs so rough. And this will continue until the car is cooled down entirely. Then the car will run as if nothing was wrong with it.
These computers cost over $1k, so unless you have one, the best option is to stop by Pep Boys or anywhere else where you can use one of these for just a few minutes.
Oh, and by the way, DO NOT use WD-40 or any other lubricant while working near the O2 sensors!
