'92 just upgraded to 130 gpm mods (Kennedy MFI kit). Starts right up and idles at ~ 1000 to 1100 RPM.
After reaching normal operating temp engine never drops down to base RPM. I wondering if the shop might have missed something when they installed the cooling kit. I know the cold advance solenoid will keep the engine from high idle when cold, but this is the opposite.

Also, when troubleshooting my '92 from now on, will I have to act like it's actually a later ('97-) model since it's now got all the later hardware? I looked at the '97 cooling circuit and it looks like it doesn't have the same temp sensors.

Thanks
Mick