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ChevyTech · 09-13-2022, 05:18 PM

What is showing in your post looks ok. I could not see how the attached file was organized.

A 1990 K1500 TBI truck does not have a IAT or MAT sensor.
Does the truck have California emissions or federal emissions?
A 1990 federal emissions K1500 truck does not use a Air Divert Solenoid.

When I was looking around and reading about WinALDL logging several people had TPS readings that were slightly negative at idle. People were commenting on it. It seemed to me it had to do with the requirement for the user to install parameters for the TPS when using WinALDL.

09-13-2022, 05:18 PM	#22
ChevyTech Registered User Join Date: May 2004 Location: Minnesota Posts: 4,620	Re: Help interpreting ALDL data What is showing in your post looks ok. I could not see how the attached file was organized. A 1990 K1500 TBI truck does not have a IAT or MAT sensor. Does the truck have California emissions or federal emissions? A 1990 federal emissions K1500 truck does not use a Air Divert Solenoid. When I was looking around and reading about WinALDL logging several people had TPS readings that were slightly negative at idle. People were commenting on it. It seemed to me it had to do with the requirement for the user to install parameters for the TPS when using WinALDL. __________________ 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.