I was incorrect in regards to retieving diagnostic codes manually. There is a way to retieve them and count the number of flashes on the LCD indicator in the lower middle part of the instrument cluster. I am sending you diagrams that explain how to retieve, identify and test each code. I had to break the Pin Voltage Charts into 3 pages as it was too big to fit into 1, it is marked 1of3, 2of3 and 3of3.
There are 2 coolant temp sensors on the engine manifold. One is a vacuum advance, I found no information on it beyond an identification diagram as the information on its specification is not released by the manufacturer but it is not the one you want to look at anyway as I assume it has something to do with ignition advance as coolant temperature does affect ignition timing but there is no defintive answer given. However, check it for any vacuum leaks by inspecting hoses.
So, I gave you diagram that identifies which one is which just in case the one that is taped up is the vacuum advance as the other sensor has a lead and grounds out using the sensor surface to engine. So test it using engine manifol near it as ground.
I also gave you information on checking the Idle Air Control Valve as it may be part of the problem.
Let me know how it goes and we can go from there.
Images (click to enlarge)
Thursday, December 15th, 2011 AT 3:26 AM