Question about 1992 Pontiac Grand Am

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Have 1992 Pontiac Grand Am radiator blew out the side and I replaced it, put in 100% antifreeze. Car still over heats, A/C and heater work fine as well as Defrost. What could be the problem?

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You may have a faulty thermostat which is sticking and not opening fully. Also the water pump may not be working properly. Try a new thermostat first.

Posted on Sep 17, 2010

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Use a 50/50 mix of antifreeze and water. Increasing the amount of antifreeze won't improve cooling. Check the rad fans, thermostat and rad cap. Are you losing coolant? Is it leaking or do you have a blown head gasket?

Posted on Sep 17, 2010

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1 Answer

2004 Pontiac Grand Am 6cycl 3.4L, overheating issues.


Sounds like you had a sticking thermostat when you replaced the waterpump causing an air pocket. Replace the thermostat, and jack the front of the car so that the radiator cap is highest part of the cooling system. Then run the car and burp the air out of the coolant system.

Dec 26, 2013 | 2000 Pontiac Grand Am GT

1 Answer

My car has no heat


The first thing to check is the level of coolant-is it full? Because no heat is the first indication of low coolant. When car is cool, open radiator cap and fill with a 50-50 mix of antifreeze and water. Also fill the overflow tank halfway up with the coolant mix.
Also feel both heater hoses after the car has come to normal operating temperature. Both should be hot. If they are, the heater is working as intended. If only one is hot, the coolant is not circulating through the heater, and someone will have to get that working-possibly an air block in the heater core, possibly a plugged heater core.
Finally, the blower motor may have wore out. Without the blower, very little heat will come out. Test or replace the blower motor.

Dec 11, 2013 | 2001 Pontiac Grand Am SE

1 Answer

Not circulating


Hey Tyler,

Your posting does not indicate if you have a good clean mixture of antifreeze coolant in your heat & cool exchanger ( ie. radiator ), this valuable component of the vehicle coolant & heating system alway's need's a good supply of 50% water to 50% antifreeze which is under pressure and could hurt you or anyone standing too close to your vehice in question.

Purchase the anti-freeze in either full mixture (100%) or 50% water 50% anti-freeze just about anywhere out there with a vehicle repair isle.
Personally speaking I mix 50% water 50% anti-freeze since this is much cheaper than buying the already 50% water to 50% anti-freeze simply due to economic reasons.
After filling this radiator container, remember to alway's follow your vehicle manufacture's safety guidelines, remember there are many moving parts in the engine compartment that could hurt you or people standing around your vehicle while the engine is running.

Hope this helps!

Oct 22, 2013 | Pontiac Cars & Trucks

2 Answers

Heat gauge goes way up,then by reeving motor it will go down.blows cold air


Check out related help links with solutions to troubleshoot the problem:---
Click the link below:---
2004 Toyota Tundra: Oil Gauge and Temp Gauge Not Working?


http://howtobyme.blogspot.in/2012/05/2004-toyota-tundra-oil-gauge-and-temp.html

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Toyota 4Runner: Temperature Gauge Sensor http://technoanswers.blogspot.in/2012/04/toyota-4runner-temperature-gauge-sensor.html

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Temperature gauge sits over half way mark? http://schematicsdiagram.blogspot.in/2012/04/temperature-gauge-sits-over-half-way.html
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Heater blows intermittently and temp gauge goes erratic?


http://technoanswers.blogspot.com/2012/01/heater-blows-intermittently-and-temp.html
------------- No heat on Oldsmobile Silhouette? http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html
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Temperature gauge does not move and no heat when heater is ON? http://technoanswers.blogspot.com/2012/01/temperature-gauge-does-not-move-and-no.html
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Temperature gauge keeps fluctuating up and down close to red? http://technoanswers.blogspot.com/2012/01/temperature-gauge-keeps-fluctuating-up.html
----------- Temperature gauge on the dash quit working on Pontiac Grand Prix? http://technoanswers.blogspot.com/2012/01/temperature-gauge-on-dash-quit-working.html
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Dodge neon gauges not working? http://technoanswers.blogspot.in/2012/02/dodge-neon-gauges-not-working.html

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Heater blows cold? http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html

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Heat blows cold on drivers side and hot on passenger side? http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

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1992 Lexus LS400: Engine overheats, Antifreeze out of reservoir and heater Blows Cold Air? http://whatisbyme.blogspot.in/2012/05/1992-lexus-ls400-engine-overheats.html

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These details will help.
Thanks.

Nov 22, 2012 | 1997 Ford Taurus

1 Answer

Filled radiator with antifreeze and it overheated,also cold air seems to be comming out of the heater vents


2 things,radiator partially clogged,and/or bad heater core.Fan clutch could also be bad.

Oct 27, 2012 | 1992 Pontiac Grand Am

1 Answer

1992 grand am,I had noticed a puddle of antifreeze where i parked my car, coming from waterpump,I then replaced waterpump and thermostat,flushed radiater 3 times,reconect hoses,battery negative cable,then...


Sounds like you still have air in the system..Does the vehicle have any bleeder screws on the thermostat housing or around the waterpump area..If it does open them up until you get a good stream coming out

Sep 05, 2011 | 1992 Pontiac Grand Am

3 Answers

My 2000 Pontiac Grand am GT is overheating and im getting no heat from my heater. I've tried just adding coolant but it hasnt helped. I took it in to the mechanic and he thought i needed a new thermostat...


PAST BY THE LOCAL AUTO PART STORE AND GET NEW COOLANT RESERVIOR CAB MAKE SURE CLOSE NICE EVEN AND DONT FORGET THE CHECK COOLANT LEVEL. RUN THE CAR AND WAIT TILL REACH THE NORMAL OPERATION TEMP. TURN THE HEAT ON HIGHEST LEVEL GO TO ENGINE DEPARTMENT ON PASSENGER SIDE NEXT TO WATER PUMP TOP OF THE COOLANT BY PASS METAL PIPE HAS BLEED VALVE USE NUMBER 8 WRENCH MAKE IT LOSE LITTLE BE BECARE FULL WILL BE HOT. WAIT TILL COOLANT START COME OUT WITH OUT AIR MAKE THIS STEP 3-4 TIME CHECK EYE ON TEMP. GAUGE AND HEATER TEMP. USE ONLY DEXCOOL.

Jan 12, 2010 | 2000 Pontiac Grand Am GT

1 Answer

My daughter is travelling long distance on highways.Her car is at a temperature of 213F at times, is that normal? She has a pontiac 2008.GT


That's normal, that's on the high side but should drop soon as it get't that high, You can have the thermostat replaced with a lower rating but your going to have the colder running engine in the winter, Just keep an eye on the radiator fluid level and make sure the antifreeze is at a 50/50 mix (antifreeze/water). The higher the concentration of antifreeze the harder for the heat to transfer from the engine. Water is a great heat transfer but it boils over, that is why antifreeze is mixed. 100% antifreeze will gel when heated, causing poor circulation making the engine run hot, you can buy a 50/50 pre mixed antifreeze if your not in to mixing the two together and you can also buy a antifreeze meter to know what your mixture is at. Good luck and hope this helps. The other thing to is to make sure the radiator is clean and not full of dirt from the winter driving. Good luck and hope this helps. Keep me posted, be glad to answer any question you may have. 

Jul 02, 2009 | 2000 Pontiac Grand Am GT

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