Cooling system

Asked by Sep 07, 2016 at 07:33 AM about the 2000 Pontiac Montana Base Extended

Question type: Maintenance & Repair

I'm having problems with my van
overheating but only when it's less than 60
degress. It was fine all summer but with
our first cold night it said low coolant. It's
going somewhere but we can't find out
where and the heads are low  then we
bleed it and it's OK for a couple days

2 Answers

216,825

You need to find the leak, that is probably why it is overheating. Due to low coolant levels or a head gasket issue. You can use a coolant pressure test gauge, warm the engine up to operating temperature and get under the car and hood to look and smell for leaks, and or perform a cylinder pressure test. Did you check your oil? How is the transmission fluid and levels? You want to check if coolant isn't migrating to other systems. Could be an trans cooler issue as well.

1 out of 1 people think this is helpful.

Not going into oil or transmission fluid. What is a trans cooler

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