Question about Pontiac Grand Am

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1999 grand am low coolant light on but temp on car is not running hot

Coolant level is right no leaks and temp is not running hot heater works fine.

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The low coolant sensor is located inthe over flow bottle thay go bad

Posted on Nov 08, 2012


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Posted on Jan 02, 2017

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SOURCE: 1999 Jeep Grand Cherokee Lerado, low coolant alarm

This same thing happened to mine. It only happened in really cold weather though. I added a few inches more of coolant into the overflow. It fixed the problem. I also discovered if that is not the problem, the sensor in the overflow can go out and a replacement is about 20 bucks.

Posted on Mar 09, 2009

  • 56 Answers

SOURCE: 1999 Pontiac Grand Am Overheating

It is probably the problem. To make shure that need to change the gaskets, one of the symptoms use to be thet the temp rises when you are running at speed 50+ average, where is supposed that the car gets a lot of air due by the speed and nobody thinks that will be overheated.

Posted on Nov 19, 2008

  • 1 Answer

SOURCE: 2004 impala coolant level

My 2004 3.4 liter impala had this problem.I found out the Rad. overflow tank was leaking Rad fluid out of the overflow nozel on the tank.I pluged the overflow nozel and added a hole in the tank cap.filled the tank to the proper level and bleed the air out of the Rad.(plug on rigid tube of engine, pull plug til fluid comes to top while running)never had another problem over heating again.

Posted on Aug 15, 2008

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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

  • 401 Answers

SOURCE: 2006 Pontiac Torrent heater blowing cold air

check the heater hoses and if both are hot then the mode door is broken
i have replaced 2 in the torrents(not a nice job)

Posted on Jun 21, 2009

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1999 F250 Super Duty with a V10 only blows warm air. 30k miles on engine. Coolant level fine, no leaks. Air Blend Actuator moves. Temp in to heater core is 115F, out is 105F

That's not hot enough at the heater core. Engine coolant temp is controlled by your thermostat. It is probably weak or stuck. Replace it. don-ohio (:^)

Dec 30, 2016 | Ford F-250 Cars & Trucks

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Dual climent control not working will not put out any heat

Try the code trick, turn your ignition on and off, but not to the point that it starts 3 times- cycling the ignition key On - Off - On - Off - On- within 5 second or so you'll get some numbers on the odometer, record them and google the codes, or buy a cheap code reader....Your right around the year that doesn't work, but it can't hurt to try....

Is it blowing at all -and the way it is suppose to? Do you get it after driving awhile? Is anything leaking-even just a bit?

Check for enough coolant in the radiator(hear a gurgling?-low coolant) enough?Yes->check all hoses for cracks, splits, leaks,)all ok? Yes->-are the heater hoses hot after running a bit? yes?->flush the heater core, still nothing?-change the temp sensor..

That should keep you busy a while..

Oct 21, 2014 | 1996 Jeep Grand Cherokee

1 Answer

My 1999 S-10 does not continually blow hot air when the heater is on. It will often only blow cold air and then the engine temp will rise to an uncomfortable level (almost red line), but then the heat...

Hi, check your coolant level. When the coolant level falls below a certain level the heater core is bypassed. It would also explain your truck overheating if the coolant level was low. If your coolant is that low, check to see where the coolant is going. External leaks are not too bad, but those engines (4.3 and 2.2) were prone to internal gasket leaks also. Check your oil, it shouldn't be milky white.

Jul 23, 2011 | 1999 Chevrolet Silverado 1500

1 Answer

2005 Honda Pilot. Temp guage goes up but then comes back down to half when the a/c or defrost is on. If sitting in traffic is still goes up until moving again.

There are several possible problems causing the temp increase.
  1. Low coolant level
  2. Leak in radiator hose
  3. Leak in radiator
  4. Bad waterpump
With low coolant levels by any 1 or a combination of 1-4, the vehicle will run hot at low speeds and at idle. Running the AC or heater pushes the remaining coolant through the system faster, aiding in cooling the engine but all indications are you've definitely have a cooling system issue that should be looked at immediately before doing damage. If the coolant level is good (when car is cold, open radiator cap and check for coolant level), the issue most likely lies in the waterpump.

May 04, 2011 | 2005 Honda Pilot

2 Answers

My heater is blowing cold air and the temp gauge is rising; do I need a new heater or is it something else? I regulary put in fuel injector cleaner every 3000 miles. When I searched for Heater Cores it...

it sounds like you are running out of coolant. refill and check for leaks. The coolant reservoir may have a leak. Your thermostat may need replacement.

Jan 14, 2011 | 2002 Pontiac Grand Am

1 Answer

The heat in my car is not working - the fan works but all I get is a cool air. Could this be my thermostat?

Had a similar problem in a different type of vehicle. It turned out that my coolant level in my radiator etc was too low to supply hot fluid to the heater core. Check your coolant level see if that's it. If your thermostat was malfunctioning your car would be running too cool or too hot. Check the engine temp gauge if you have one; but this is a very unlikely source for your problem. If your coolant is low be on the lookout for leaks in the engine cooling system after the system pressurizes(reaches normal operating temperature).

Nov 23, 2010 | 1999 Kia Sephia

3 Answers

I have a Pontiac Montana (2000). That on my way to work the low coolant level light came on. and after work when I started it up the light did not come right away but it came on and there was no heat and...

No. It is not the thermostat. You are just low on coolant. The reason for the low coolant is either the fan is not working, the head gasket is blown, or the coolant system has a leak.
The fan is easy to check. When the temp comes up then the fan should come on.
The head gasket is easy to check also. Your oil will be milky white.
And if the radiator, radiator hose, or gasket leak can be harder to find.
The heater not working is because there is not enough water to heat the heater core.
PLEASE RATE. By checking Four thumbs ups!
Thanks! Have a GREAT DAY!

Oct 16, 2010 | 2000 Pontiac Montana

2 Answers

1999 Oldsmobile Bravada Heating Problem

when engine is cold remove radiator cap and check coolant level,sounds like it is really low and has an air pocket in it.

Dec 02, 2009 | 1999 Oldsmobile Bravada

2 Answers

Heater problem

Ok, some clues, good. When the jeep has been driven for 10minutes, it should be at operating temperature. What does the temp. gauge indicate at that time? Is it on the low (cold) side, in the middle (normal) or near the hot end of the temp. gauge? Let me know the answer to the above, also check to coolant level and let me know what you find. If the coolant level is low, it can result in the engine running hot, and result in no heat. When the level is low, it won't circulate coolant through the heater core, which means you won't have heat. So let me know about the engine temp, and the coolant level, this is the easiest and simplest possibility of why you don't have heat. If this isn't the problem, do not rate my answer until I can help further after I get the above info from you.

Nov 23, 2009 | 1999 Jeep Grand Cherokee

2 Answers

Heater is out

coolant level is fine still no heat

Nov 24, 2008 | 2002 Ford Expedition

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