WHEN HEAT IS ON IT WILL GO COLD AND TEMP GAUGE ...

2002 Pontiac Grand Prix

Tiny

Sp1100

November, 9, 2012 AT 2:26 PM

When heat is on it will go cold and temp gauge starts to rise and almost over heat and then drops again and heat is hot and then same thing again. Can you please help with an answer why or what is causing this. Thank you for your time.

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2 Answers

Tiny

Jacobandnickolas

November, 9, 2012 AT 2:41 PM

It could be a couple things. First make sure the coolant is full. If it is, then check the thermostat.

Tiny

Sp1100

November, 9, 2012 AT 2:47 PM

Ok I will, thank you so much for your time, I will make this my #1 web site! Thanks again!

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