Depending on the motor in the car it may have timing chain and or belt issues. The V6 3.8L has a chain that is still well past it's service life. If it is a 4 cylinder, it certainly needs to be replaced.
I answered the question about your truck, so I got a little lost between the 2.
I am assuming you just meant the car, however, same rules apply to both.
Is the gas mileage bad? Or has it changed since the O2 sensor started throwing a code?
Did you say you tried Sea Foam on the car?
Some other thoughts are an injector that is failing slowly but surely.
Same thoughts as reply to truck/car question.
There is an emissions item called an EGR valve that gets really dirty and can stay stuck in a position and repair requires taking it apart and cleaning the intake by hand as well as probably replacing it.
As far as the IACV, it will be up on the list to. If it is not throwing a code, it may just be dirty.
If you think the problem is the same even after the engine has reached operating temperature, then the FIT valve can be ruled out which is an electronic choke more or less.
Monday, August 22nd, 2011 AT 5:58 AM