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ChevyTech · 08-12-2022, 10:02 PM

I am ok with it running at 190 degrees. The system has thresholds in the mid 180s that it made it through.

If the 10K has to be in place to see data, then it won't work for further diagnosis on the idle problem you are having. It was not a waste. It ruled out several things and found the low voltage problem.

The only other thing I want to do is to see data without the 10K resistor in place. It sounds like WinALDL can't do that for your truck. Almost all my experience is using that equipment the dealer owned which was the Tech 1, Tech2, OTC, CAMS, and the earlier equipment that I don't even remember what it was called. Everything has been taken care of that I can think of that is external of the ECM.

After the new alternator did you take it for a drive over 45 MPH to get a relearn without the WinALDL connected?

08-12-2022, 10:02 PM	#30
ChevyTech Registered User Join Date: May 2004 Location: Minnesota Posts: 4,620	Re: High idle on each start I am ok with it running at 190 degrees. The system has thresholds in the mid 180s that it made it through. If the 10K has to be in place to see data, then it won't work for further diagnosis on the idle problem you are having. It was not a waste. It ruled out several things and found the low voltage problem. The only other thing I want to do is to see data without the 10K resistor in place. It sounds like WinALDL can't do that for your truck. Almost all my experience is using that equipment the dealer owned which was the Tech 1, Tech2, OTC, CAMS, and the earlier equipment that I don't even remember what it was called. Everything has been taken care of that I can think of that is external of the ECM. After the new alternator did you take it for a drive over 45 MPH to get a relearn without the WinALDL connected? __________________ For those of you that are wondering why you are not getting replies to your thread: Did you give the model, year, engine, fuel system type, and transmission information? If it is modified from what came stock from the factory, let us know that too.