2CarPros - Car Questions & Answers

1990 Pontiac Firebird Repair Question


Topics covered: Thermostat.
Mileage: 160,000 miles.

Asked on January 13, 2011

V6 engine temp

What is the eng temp to be at normal operating speed,after warm up. and recomended thermostat temp?
Avatar Asked by flamenbird87

Answer

Replied on January 13, 2011

It has a 195 thermostat and it will usually maintain that when cruising but in slow traffic situations it may run hotter because the electric fan is programmed to come on higher temp than that.

Tiny Answered by Wrenchtech (expert)
14,825 answers provided
Replied on January 13, 2011

would a lower temp cause it to run bad such as idle rough.my car runs at normal temp about 160 if it sits and idles for more than 5 min in traffic the temp will rise to almost 200 and the fan will kick on.but if the temp is to low at normal driving would that make it run rich and idle a little rough?

Tiny Response from flamenbird87
9 questions asked
Replied on January 13, 2011

Yes, it is possible although i don't know if that is the case with yours or not. Many GMs will go into open loop when the temp drops below a specific threshhold.

Tiny Answered by Wrenchtech (expert)
14,825 answers provided

Replied on January 14, 2011

I will change the thermostat to a 195 and go from there.Thanks for the info.

Tiny Response from flamenbird87
9 questions asked
Replied on January 14, 2011

Good plan.

Tiny Answered by Wrenchtech (expert)
14,825 answers provided