Yeah well I celebrated too soon I guess, I said I shouldn’t do that. Problem came back in full force today but it was so much better yesterday. You know what’s strange is it was abnormally cold yesterday and a lot hotter outside today and I realized this started when the temperature outside got hotter. Probably just coincidence, though.
This is something I’ve noticed too but it only happens when in 2nd gear (fixed). I let off the gas and can count 1…2…jerk.
I think it is time to consider replacing vehicle and regaining peace of mind.
Have you had the ecm learned memory reset yet? It needs to be done with a scanner disconnecting the battery will not clear it. Look at your throttle body, if it has 2 cables on it one is for shift control you will need to check that it is set properly.
Yeah I’m too obsessive for that. Must figure out…already driving my wife crazy.
I think it might be worth looking at the datastream that is generated by your engine’s sensors to make sure that values being returned by engine coolant, air intake temperature, and oxygen sensors, as well as the MAP or MAF sensors and Throttle Position sensor all look sane. You will need a mechanic that is skilled in diagnosing drivability issues to interpret the data, and it would help if he or she is familiar with what the ‘normal’ values look like for your type of vehicle. It is entirely possible that you have what is called an “in range failure” of one of these sensors. Basically this means that data coming from one or more sensors is just ‘a bit off’, but not far enough out of whack for the computer to diagnose a bad sensor.
An example might be an oxygen sensor that has gotten ‘lazy’ and is not reacting fast enough for precise control of the fuel mixture, but is still reacting fast enough that the computer thinks things are okay. So you let off the gas, what the sensor sees changes, but not fast enough to reflect what is happening in real time, so the result is your engine’s ignition timing or amount of fuel being injected doesn’t match the actual demand, and the car lurches due to this hiccup, then recovers.