Hey
So, background is 89 GT with 100k original miles. Stock. Have been driving it for 2 years without the temp gauge (an aftermarket / accurate temp gauge) going above 190* even in august.
Driving to work the other morning and it climbs to over 210, so I pull over and check it out.
Radiator hose and radiator are cold. So I think, ok stuck thermo.
Let it cool down, turn around and drive home, starts to climb again then all of a sudden boom temp drops back to rock solid. So ya, thermostat, I figure I'll replace it anyway.
Replaced it with a motorcraft thermo, same issue. Made sure the coolant was full, let engine warm up with cap off to keep filling coolant... engine climbs over 210 again. Then all of a sudden, boom, comes down, take it for a drive and it's rock solid again.
What else should I be looking for? I'm going to try again tomorrow morning and see if it happens... but has anyone experienced this?
Thanks.
So, background is 89 GT with 100k original miles. Stock. Have been driving it for 2 years without the temp gauge (an aftermarket / accurate temp gauge) going above 190* even in august.
Driving to work the other morning and it climbs to over 210, so I pull over and check it out.
Radiator hose and radiator are cold. So I think, ok stuck thermo.
Let it cool down, turn around and drive home, starts to climb again then all of a sudden boom temp drops back to rock solid. So ya, thermostat, I figure I'll replace it anyway.
Replaced it with a motorcraft thermo, same issue. Made sure the coolant was full, let engine warm up with cap off to keep filling coolant... engine climbs over 210 again. Then all of a sudden, boom, comes down, take it for a drive and it's rock solid again.
What else should I be looking for? I'm going to try again tomorrow morning and see if it happens... but has anyone experienced this?
Thanks.