Hello all! This is the first such site that I have joined. As an avid old car owner, I am always looking for parts and information. I have owned about 50 Oldsmobiles since I was 16 ( many years ago). I have busted many a knuckle working on them and others. I do have a question. My 90 Trofeo has a "no power" to the instruments and HVAC problem. Sometimes everything works as it should but only about 10% of the times I drive it. This is an 80k mile Florida car. Any Ideas? Thanks

 

welcome. not sure where you should start but i would check every ground you can find. i love the last years for the Trofeo. i feel they are the last of the great interiors. (of any brand)

 

Welcome to CO. You might post your questions again in applicable forums as many members don't cruise the new members' section here. As I read it you have two problems, one with the dash electrical and one with the air conditioner not working.

 

Welcome aboard

I allways get in shape by taking a wood rasp to my knuckels and dumping my hands in some kerosine.

 

Ye gods. I still have trouble thinking of a 1990 car as an "old" car, but they are twenty years old now!

Is this Trofeo a digital dash job? (I think they all were, but never hurts to ask.)

If so my guess is either a fritzy power supply or a bad ground. There are a couple of companies who can rebuild the digital dashes.

I passed on a gorgeous 92 several years back because it had the digital dash and I was afraid of it.

I never understood why the 90-92 cars especially didn't take off saleswise. They were hands down the best-looking cars GM offered those years, and the blown 3.8 was/is a bulletproof powertrain. Plus the suckers were fast!

But, as is typical of later GM, they either didn't know or didn't care how to market such a car.