Mechanics

VAN OVERHEATING

1999 Pontiac Montana • 6 cylinder Automatic •

My 1999 Pontiac Montana is leaking antifreeze. The temperature is going up and then go back down. The dashboard is cracked. It is running sluggish. I triedputting sealant block to help but nothing is working. It is shaking when it is sitting still in park. What could be the proble?
Avatar
Blake32
November 15, 2010.



If you have a check engine light get codes read.

Have compression test performed to check head gaskets, if OK, then perform a cooling system pressure test to isolate leak.

Mmprince4000
Nov 15, 2010.