Ok, I'm messing around with my car with ALDL and it shows code 15 (so far) and I show it means "Coolant Sensor Circut (High Voltage/Low Temp)(Ground)"
Any idea what that acutally means, as in is there something wrong or what?

Most likely it's just the coolant sensor or wiring to it. Pay special attention to the connector. Unless it has been upgraded to the 2 plug design, the old design gives loads of trouble at this connector. It's somewhere near the thermostat housing. At the parts store, ask for the coolant sensor. Specify that you want the one that works with the computer system. Good luck!

Phil

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87 FIERO GT 2.8 5spd

GM auto tech for 27 years. Specializing in electrical and computer problems. Now on workers comp. and it looks like I will be unable to return to work as a tech.

Sweet, thats kinda what I was thinking (sensor problem that is) my gauge doesnt seem to move past 100 degress. I will check it out tomorrow. Thank you!!