Question about 1995 Pontiac Grand Prix

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I have a 1995 grand prix I had the water pump replaced but its still leaking coolant and runs hot how do I fix it?

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U need to find where its leaking from,,fill it up with water run it & look for leak,,

Posted on May 17, 2010

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Posted on Jan 02, 2017

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SOURCE: I have a 1995 grand prix I had the water pump

you nave to determine where the problem is. This could be caused by many things here is a list that I can give you but can't be sure as I don't know what was all done when the pump was replaced. Some mechanics don't do the same things when they repair or replace water pumps. Here is possible causes, Plugged catalytic converter Could cause overheating. This could of caused the pump to fail as it would of caused the engine block to get hot and boil the coolant out from the block. As well when the mechanic changed the pump he should of done the following if he inspected the following.

1. Rod out radiator and use scaler for engine before putting in antifreeze.

2. Replace water hoses that may have separated and collapsed

3. Replace Radiator cap Because if the cap has a weak spring allowing coolant to flow into overflow tank and thus, after several cooling and heating periods over a few days causes you to lose coolant.

4. A loose water pump belt. Or a spring tensioner worn out.

5. If it has a automatic Transmission could have plugged oil cooler which could cause the engine to overheat.

6. Oil cooler plugged can cause this as well.

7. A/C Malfunctioning causing the condenser or evaporator to heat up water.

8. Plugged condenser with foreign material it it not allowing correct air flow.

9. on some models fan clutch worn out.

And the list could go on this is not a full list of what could cause it but gives you an ideal how far ranging the problem could be. Hope this helps thanks for using fix-ya.

Posted on Mar 26, 2010

  • 22 Answers

SOURCE: 1995 Pontiac Grand Prix SE 6v 3.1L running red line hot!

maybe a water pump.

Posted on May 29, 2010

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2 Answers

I have a 2005 Pontiac Grand Prix that is running hot. I have changed the water pump and the thermostat. Checked all hoses and they are good(no leaks) yet I'm still running hot. What's the next


find the bleed valve on coolant system and burp it. make sure you are using a good 50/50 mix of coolant.
maybe run a coolant system cleaner . maybe a clog?
if worst come to worst blow head gasket

Apr 13, 2013 | 2005 Pontiac Grand Prix

1 Answer

I have a 1995 Pontiac Grand Prix SE 3.1L V6 and I have no heat, and the defrost barely works. My coolant is leaking and when the car is on, it flies off the front of the belt and drips to the ground. Is my...


more than likely one of your heater hoses has sprung a leak ... if your car is not over heating with water in it than your water pump is fine.... the gasket around it may need to be replaced tho ... start your car then you look for your leak please get back to me

Feb 05, 2011 | 1995 Pontiac Grand Prix

1 Answer

I have a 2003 grand prix and it has been leaking water and running hot. i add water everyday and it runs fine. however now it is whining a little. is this the water pump?


It could be the water pump, but it could be water getting on the pulley's and belt causing the whining. Do you know where about the water is leaking. It could be numerous things but most often I see is the coolant cap is bad or the radiator has a small crack. Have the system pressure checked and it will force the water out at the leak.

Aug 26, 2010 | 2003 Pontiac Grand Prix

1 Answer

I have a 1995 grand prix I had the water pump replaced but its still leaking coolant and runs hot how do I fix it?


you nave to determine where the problem is. This could be caused by many things here is a list that I can give you but can't be sure as I don't know what was all done when the pump was replaced. Some mechanics don't do the same things when they repair or replace water pumps. Here is possible causes, Plugged catalytic converter Could cause overheating. This could of caused the pump to fail as it would of caused the engine block to get hot and boil the coolant out from the block. As well when the mechanic changed the pump he should of done the following if he inspected the following.

1. Rod out radiator and use scaler for engine before putting in antifreeze.

2. Replace water hoses that may have separated and collapsed

3. Replace Radiator cap Because if the cap has a weak spring allowing coolant to flow into overflow tank and thus, after several cooling and heating periods over a few days causes you to lose coolant.

4. A loose water pump belt. Or a spring tensioner worn out.

5. If it has a automatic Transmission could have plugged oil cooler which could cause the engine to overheat.

6. Oil cooler plugged can cause this as well.

7. A/C Malfunctioning causing the condenser or evaporator to heat up water.

8. Plugged condenser with foreign material it it not allowing correct air flow.

9. on some models fan clutch worn out.

And the list could go on this is not a full list of what could cause it but gives you an ideal how far ranging the problem could be. Hope this helps thanks for using fix-ya.

Mar 26, 2010 | 1995 Pontiac Grand Prix

4 Answers

HELLO I HAVE 1995 GRAND PRIX WITH THE 3.1 MOTOR. MY PROBLEM IS IM NOT GETTING NO HEAT. THE TEMP GAGE GOES TO NORMAL WHEN ITS IDELING WHEN DRIVING GET HOT THEN WHEN I PUSH ON BRAKE OR COME TO A STOP THE...


check the fan and water pump one of these is possibly ur problem when ur at idle there is no heat load and the radiator can dissipate that when ur driving causes more heat if fan isnt working the car wont cool same if problem is water pump at idle pump may be able to move some of the hot anti-freeze but when driving may not be pumping it thru radiator to cool

Dec 22, 2009 | 2004 Pontiac Grand Prix

1 Answer

My 1997 grand prix gtp has a leak


Is it water or coolant that leaks inside. Water will be clear, coolant will be yellowish-green or blue. If it is clear than it is just a rubber hose that is loose from the AC drain. Replace the hose and clamp. If it is coolant then you have a leaking heater core and would need to get it replaced.

May 12, 2009 | 1997 Pontiac Grand Prix

1 Answer

1995 Pontiac grand prix's temp gauge goes hot


check to see if the electric fan is coming on when it should. Also check coolant level. Also, you may have the beginning of a plugged radiator If all else is OK flush radiator out.

Mar 21, 2009 | 1995 Pontiac Grand Prix

1 Answer

1996 grand prix se running hot


it sounds like it may have air in the system there should be a bleeder valve for the coolant also if it ran hot you may have a possible head gaskt problem i would try bleeding the air out of the coolant system and if problem is still there you can buy a kit to check the head gasket it hooks to the coolant system and you pour a liquid in it and if it turns from blue to yellow it has a head gasket problem

Nov 05, 2008 | 1996 Pontiac Grand Prix

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