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2002 grand prix is running hot in stop and go traffic. I have changed the water pump and thermostat

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First is the fan turning on,if it is ok check your radiator you must have sediment in the bottom,or a core is blocked ,I would bring it to a radiator shop and have it recored its a lot cheaper than buying new,if this helps vote me a fix ya

Posted on Jul 15, 2008

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1 Answer

How to flush a heater core in a pontiac grand prix 2002


If you have warm air on one side and cool on the other, you've a situation with the vent flaps. But to backflush the core, take both hoses off the core and run a garden hose to the outlet side going towards the water pump. This will flush it.

Aug 31, 2014 | 2002 Pontiac Grand Prix

1 Answer

Running hot


Possible bad head gasket cracked head there is a co2 test you can test the antifreeze to see if that is the problem

Apr 15, 2014 | 2005 Pontiac Grand Prix 4dr Sdn GXP

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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

Van overheating when stuck in traffic fan not coming on changed two sensors engine temperature and temperature controlno change. Fan does work when put power to it externally. Van still overheating when...


u should check for a faulty thermostat first, they are only a few quid and easily replaced. if no change ur most likely faults are a blocked radiator or faulty water pump. u dont sayhow old ur van is but after the thermostat go to the radiator, when its hot check the bottom of the rad to make sure its hot, also brown water means u need to bback flush ur cooling system. even tho u have changed some sensors doesnt mean u got the fan switch sender, dash board sender and fan sender tend to be different sensors, so just double check.

Jul 04, 2010 | 1992 Plymouth Grand Voyager

1 Answer

1997 Pontiac Grand Prix overheating in stop and go traffic


its either of the 3 ur water pump is weak and couldnt supply the right amount of coolant to ur engine / ur radiator is clogged or your thermostatic valve is stuck up that restrict full flow of fluid to the radiator thats why when u use the heater that uses ur coolant hot water as a heating unit the temp. goes down...

Apr 08, 2010 | 1997 Pontiac Grand Prix

1 Answer

1. My grand prix gtp has problems with leaking on the passenger side. I cannot locate the leak. 2. My engine runs too hot when ideling. I changed the thermostat but this did not help. I need your assi


Make sure your cooling fans are coming on when the temp heats up. Are you talking about a leak inside the car or outside? Inside is usaully a drain tube for the A/C stopped up. Outside, look for a water pump or intake gasket.

May 12, 2009 | 1997 Pontiac Grand Prix

1 Answer

2002 pontiac grand prix over heating


Are your electric fans engaging or turning on?

Dec 26, 2008 | 2002 Pontiac Grand Prix

1 Answer

THE CAR DON'T GET TO THE RIGHT TEMPERATURE


i dont think it needs a waterpump. what temperature thermostat did you put in? unless the fan is running all the time maybe. i would try another thermostat, the engine needs to be at least 195 degrees to produce decent heat.

Nov 19, 2008 | 2003 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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