COOLANT IS BEING FORCED BACK INTO THE RESERVOIR ...

1999 Pontiac Montana

Tiny

Anonymous

March, 4, 2013 AT 5:15 PM

Coolant is being forced back into the reservoir and the temperate gauge is going up and down, why?

FOUND 577 RELATED QUESTIONS

1 Answer

Tiny

caradiodoc

March, 4, 2013 AT 11:46 PM

That's what you pay mechanics to figure out. There could be a leaking cylinder head gasket. It could be as simple as a sticking thermostat. To identify a leaking head gasket your mechanic will draw air from the coolant reservoir through a glass cylinder with two chambers partially-filled with a special dark blue liquid. If combustion gases are present, the liquid will turn bright yellow.

Please login or register to post a reply.

Instrument Cluster Replacement GMC Yukon