Not much or no heat??

[coalminer78]

I just changed out my head gaskets in a 2000 Pontiac Montana. The last two or three years I haven't had heat unless I was going 45 or so. Since I changed the head gaskets, I have great heat even at idle.
If you are having heat problem ran a hydrocarbon test that autozone rents out. I believe lack of heat my be signs a head gasket is going out. The pressure builds up and restricts flow up the heater until the water pump rpm overcome it. Just a thought since head gaskets fix my heat.

 

[Steelcity]

Thanks for the tip.
Did you do the job yourself ? Was it a PIA?

 

[coalminer78]

I did it myself. Wasn't bad. The heat shield on the back manifold was a problem because I could spray them down to soak. Once I figured out the front motor mount went thru the compressor it wasn't bad. Torque the head bolt down is a good work out. lol