Question about Pontiac Montana

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1999 montana overheats the faster i go the more the temp drops the heat only works after enigine has run in gear for 20 min

What do i do

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  • 56 Answers

Low fluid in the radiator it sounds like

Posted on Apr 03, 2014

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Posted on Jan 02, 2017

  • 341 Answers

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

  • 110 Answers

SOURCE: fuel pump

try the fuel filter first. lot easier to replace. and about 300 bucks cheaper

Posted on Apr 26, 2009

  • 44 Answers

SOURCE: catera stalls

Sounds like a weak fuel pump.

Posted on Jul 21, 2009

  • 1 Answer

SOURCE: 2003 Protege 5 overheating on long runs.

I just replaced the radiator and thermostat on my 03. The radiator was defective (corroded) on the lip where the cap seals. This allowed coolant to be spat out. The thermostat was also sticking closed after new radiator and this caused overheating. Replace both while in there for under $100 if doing it yourself.

Posted on Mar 11, 2010

  • 1796 Answers

SOURCE: I have a 1999 Cadillac

Hi!!
There is a problem with the hole getting clogged right by where the engine connection is, use a piece of wire to unclog the orifice and reinstall the line. You should be OK after that.
Good Luck!! A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa.

Posted on Jan 04, 2011

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Engine overheats while driving approx 20 mins - does not overheat in idle - radiator was changed (new)due to leak, thermostat is new and is installed correctly, new cap as well-could it be water pump? it's...


Check to see that the electric fan is coming on, there are two fans on this vehicle. The sender for the fan is right in front of the engine near the water housing, and is a common problem. Good Luck.

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Over haeting


Had the same problem....turned out to be the water pump.

Jan 13, 2009 | 1999 Pontiac Montana

1 Answer

Heat & temp gauge


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

Oct 19, 2008 | 1999 Pontiac Montana

3 Answers

Location of thermostat and replacement


Finding the thermostat is easy. Just follow the top radiator hose back to the engine.
The question I have is how to get to the bottom screw of the thermostat housing.

Any Sugustions anyone?

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