1990 Nissan 300ZX Repair Question
Is this a bad thermostat or engine temperature gauge problem?
Suspect cooloing fan or radiator effeciency reduced to calcium buildup in core
18,416 answers provided
If the gauge shoots up immediately and cooling fans works, it would be an inaccurate reading due to a bad ground circuit connection, behind the headlights.
39,806 answers provided
most likely this would be caused by a bad ground connection.
2 questions asked
Thanks for help. Replaced clogged radiator, power washed the air conditioner condenser. I could not believe the road crud that washed out. While I was there I replaced the hoses and thermostat. To my surprise, the thermostat had been removed. There wasn't one. I bought this Z used. Previous owner must have had overheating issues as well. Not sure what fixed the problem ( maybe all of the above) but temp gauge is level no matter if air is on or not and it is 110 degrees out.
1 question asked