Question about 2001 Pontiac Montana

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No heat but car does not over heat

It has a new radiator cap. there seems to be enough coolant, the temp gauge runs in the normal range, but no heat in passenger compartment

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  • Pontiac Master
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If both heater hoses are getting hot, you may have a problem with a blend door under the dash. The blend doors direct air thru the heater core and the vents.

Posted on Dec 12, 2012

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Posted on Jan 02, 2017

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SOURCE: heat & temp gauge

you have bled air out of system. on top front right of eng. there is a brass bleder

Posted on Oct 21, 2008

  • 4 Answers

SOURCE: 1999 Pontiac Montana Overheating

sounds like you could have faulty gauges to meby check them out.... and yes its posible that its pluged

Posted on Dec 06, 2008

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SOURCE: possible overheating, 2004 pontiac montana

Its definitly a bad reading, you would know if your vehicle is overheating, you can usually smell it right away.I would say its your temperature gauge sending unit is defective, check the wires to see if they are well connected or broken. ask a backyard mechanic for assistance.

Posted on Dec 23, 2008

  • 2 Answers

SOURCE: 1996 Pontiac Grand Am overheating

If its the 3.1L it could be your intake manifold gasket , the material used for the gasket does not react well with GM's Dex-Cool antifreeze. The leak may not be apparent at first, but I would pressure test the cooling system. If you look at the front of the motor by the belts , try to peek down at the intake manifold and check for slight seapage to an obvious leak.

If its either of the Quad-4's they were notorious for heads warping or cracking.

Posted on Feb 03, 2009

  • 1 Answer

SOURCE: car runs hot

CHECK YOUR RELAY IN YOUR FUSE BOX UNDER THE HOOD ON THE DRIVERS SIDE INNER FENDER. THE A/C AND THE HEATER RELAY ARE SAME. CHECK AND SEE IF THE A/C REALY WORKS BY TURNING ON YOUR A/C SWITCH. THE ELECTRIC FAN SHOULD START RIGHT AWAY. OTHERWISE YOU HAVE TO WAIT TILL THE ENGINE ACHEIVES OPERATING TEMP TO KICK THE FAN ON. IF ONE DON'T WORK AND OTHER OTHER DOES... SWITCH THE RELAY AND SEE IF IT WORKS. BEEN THERE AND DONE THAT. $9.00 FOR A NEW RELAY AT CHECKER AUTO PARTS.

Posted on Feb 14, 2009

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