Question about 1990 Pontiac Bonneville

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No heat gauge dosnt move and it never gets hot. just bought the car and was told the radiator was replaced. checked antifreeze and it is good. just cant figure out why it dosent blow hot air.

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Might want to chk. for a air pocket in cooling system, common problem whenever any work is done to cooling system, was it just the radiator that was replaced or was the thermostat replaced to, if not might want to put one of them in too. Whatever all air has to be out of the system in order for it to work wright. Also need to find out why the radiator was replaced. could be a little more than an air pocket. If there is any kind of waranty take it back and let them fix your problem.

Posted on Mar 02, 2009

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


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These details will help.
Thanks.

Nov 22, 2012 | 1997 Ford Taurus

1 Answer

Antifreeze boiling over when car is overheatind and Wen its not overheating changed thermostat radiator bled and flushed it changed temperature switch no oil and water mixture No smoke


Check the over flow tank located in front of the passenger side glove box for water or fluid. When driving the car, listen by the glove box to see if you car hear a boiling sound. If you can hear water boiling or moving, check your heater core to make sure it is not plugged or bad. When the car starts to over heat, does the gauge register that it is getting hot? If it doesn't then check the thermostat to make sure it is not stuck open or closed. If its over heating and the gauge is not showing that the car is running hot before boiling over, then the thermostat is defective or not working. Try replacing it again.

Sep 23, 2011 | 2000 Volvo V40

2 Answers

The coolant is getting hot causing the engine to overheat.


This could have several causes. Is the coolant tank full? Is the coolant relatively fresh and a 50/50 mix of water and antifreeze?
Does the heat gauge jump up to hot and then fall back rapidly at some point or just rise and keep climbing? If so, it is the thermostat. Is there a leak evident under the car? If so, it could be a bad water pump. The water pump has a small weep hole and if there is water at that point the pump needs to be replaced. If none of this is the cause, then it could be a plugged radiator or a faulty cap located on the radiator or the coolant overflow tank.

Sep 19, 2010 | 1998 Cadillac DeVille

1 Answer

2004 cheverolet impala 3.4L engine - Started running hot. Had never changed antifreeze, bought a flush and refilled with antifreeze. Ok for several weeks, started running hot again. Replaced the...


Sounds like you have an air;lock in your cooling system.Try placing a bleeder on the return hose to the heater core ........looks like a small tap

Aug 18, 2010 | 2004 Chevrolet Impala

1 Answer

99 Firebird still overheating after repairs and antifreeze


overheating is most likely a bad thermostat, but the coolant loss is a second big concern. Does the exhaust look like steam? You could have a cracked block and the coolant is leaking into the engine. Also check the oil for contamination.

Feb 16, 2010 | 1999 Pontiac Firebird

1 Answer

1994 Lebaron Convertible No Heat, High Temp Gauge


The heat is made in the engine so if the engine is overheated and nothing else is hot, the water is not moving.
I would have suspected a thermostat also.
I would guess now that you have a dead water pump.

Karl at topgunwon.com

Dec 21, 2009 | 1994 Chrysler LeBaron

2 Answers

How to check thermostat on a 1999 silverado z71


When the truck is cold, with the engine off open the hood and search for for the upper radiator hose, look for a place on the hose to put your hand on it, a place that it's not close to any moving parts, (radiator's fan, and pulleys in front of the engine) now that you have fine a good spot on the hose to check the thermostat, go ahead star the engine and just wait while you keep your hand on the hose.
Ones the thermostat gets hot, it will open letting hot antifreeze flow into the radiator that's when your hand will feel this hot change on the radiator hose. It's a good time to take a look to your temperature gauge, it's too hot or too cold?
if the gauge moves higher than normally does, and you didn't feel a hot change on the hose, that means you have a bad thermostat that it's not opening on time or it's not opening at all,
if the gauge it's below than normally does, that means the thermostat it's open all the time

Nov 01, 2009 | 1999 Chevrolet Silverado 1500

2 Answers

2005 hyundai sonata is running hot while sitting at stop lights


Check your fuse and relay to the radiator fan, There going to be high amp fuse so most likely will be in the fuse box by the battery. If the fuse and relay is good, check the wire harness connection at the fans. The other thing to is to run the engine and turn on your A/C, the A/C should over ride the switch and turn on the fans. If the fans do turn on, inspect the radiator fluid, make sure it's at it's level and if it's never been serviced. It may be time, Orange antifreeze has a life of 150,000 miles or 5 years and the green antifreeze has a life of 30,000 miles and 1 year. The thermostat may also gone bad but i don't think at this case since your car only heats up while your stopped. If everything is working (fan) just replace the antifreeze 50/50 mix (Antifreeze/water), Water has great heat transfer but boils so antifreeze is added, and 100% antifreeze does not have great heat transfer and will gel when heated so the two have to be mixed 50/50 and if your not sure how to mix the two. You can buy them 50/50 mix and the capacity to your car total fill is 7.3 liter 4 cylinder/ 8.6 liter 6 cylinder. 

Jul 03, 2009 | 2005 Hyundai Sonata

2 Answers

Motor heats up


If the fan is working and water is circulating, it could be losing pressure. Replace the radiator cap or on some vehicles the coolant refill cap. I had this same issue with a Grand AM.

Apr 05, 2009 | 2003 Nissan Altima

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