carriedi wrote:just a suggestion of something to try, an exhaust back pressure test. measure the exhaust pressure between the cat and the exhaust manifold. you might have a plugged exhaust.
If the exhaust pressure is withing normal specs, drive around with the scanner graphing the data stream and see what the fuel trims are doing.
carriedi wrote:most places, when they talk about replacing the exhaust system, do not include the catalytic converter. But if you had that replaced also then I would drive it with a scanner on the vehicle and see what your computer is seeing. Your oxygen sensors, fuel trims, MAF, coolant temp... See what they are doing as you drive under normal conditions. this way you can see if the engine is trying to add fuel or it may be taking away fuel. You can see if the ESC is seeing an engine knock (ping). See if the TPS is working normally.
|No reverse, acceleration issue||