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Heat - no heat....... Heat - no heat

1K views 3 replies 3 participants last post by  mellentine 
#1 ·
Sometimes I have heat, sometimes nothing. What typically happens when this occurs? I know I'm not the only one and with winter around the corner, I want to figure it out now. Me thinks its a switch or such and is simple to fix, I just don't know where to even look. Thanks
 
#3 ·
do you have a picture of where it is located and part number for it? Thanks for the reply
 
#4 ·
Last winter I noticed my heat would work when driving down the road, but while sitting at an idle in the commutter rail parking lot waiting on a train, the heat would go cold. I would rev the engine to 2K RPM, and after a couple seconds the heat would return. Turns out I had a slow leak on the bottom of my radiator, and I was low on fluid. When I filled it up, heat worked all the time.
 
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