Van Overheating

1999 PONTIAC MONTANA
6 CYL • AUTOMATIC
Avatar
BLAKE32
  • MEMBER
  • 1 POST
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?
Nov 15, 2010 at 9:11 AM
Advertisement
Avatar
MMPRINCE4000
  • ✓Experienced Mechanic
  • 8,548 POSTS
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.
Nov 15, 2010 at 9:14 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle