There was no associated CEL so I didn't have any codes to pull. It was diagnosed through trial and error and a lot of frustration. As it progressed it became apparent that on cold start the primary symptom was a very high idle. The RPM stutter would then begin to occur after a warm start or...
I had been chasing this for months! O2 sensors, TPS, timing, IAC, ignitor, MAF, fuel pump relay, trial, error, cleaning, replacing, testing and/or buying.........
The culprit? It was the Engine Coolant Temp Sensor. $45 bucks (OEM), 30 minutes and voila!
Thanks to this forum for the help!
Thanks! I will take a look at the relay and then dive into filter, etc. and report back on progress.
The idle does fluctuate a bit at a stand still but its not all over the place - its as if the ECU is not happy and trying compensate. This was occurring off and on prior to the TPS being...
I have a '94 80-Series that hesitates when getting on the accelerator. It's been intermittent for the past few months but now is more the rule than the exception. If I press the gas slow and smooth its normal but when I accelerate as I would typically it hesitates and drops RPM to the point...