Hey so my 1997 grand prix 3.8 v6 has been having a weird issue. When it starts up its cold then slowly go to 160 then too 195 then back to 180 and when I'm driving it'll stay under 160. What's going o
That's a thermostat issue, replace it.
Awesome. I replaced it 5 minutes ago and am about to go test it. Wish me luck
A certain amount of temperature fluctuation is normal under certain driving conditions. A new thermostat every now and again is a good idea anyway though. As long as it doesn't actually overheat or run cold all the time you'll be fine.
Looking for a Used Grand Prix in your area?
CarGurus has 3,722 nationwide Grand Prix listings starting at $879.
Search Pontiac Grand Prix Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Pontiac Grand Prix Experts