Question about 1996 Pontiac Sunfire

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Pontiac sunfire overheating

My sunfire's temp gauge went way up--when i got home my husband checked the antifreeze level--the tank was empty--replace water pump and thermostat --its still doing it--what could this be

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  • Anonymous Dec 05, 2008

    were pretty sure ours is a bad heater core

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Blown head gasket.

Posted on Dec 02, 2008

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Posted on Jan 02, 2017

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1 Answer

Replaced thermostat on pontiac sunfire now there's smoke coming from coolant tank


Sounds like you have a leaking head gasket or damage to the engine from when it overheated.
A leaking head gasket can cause compression to leak into the cooling system and pull coolant into the cylinders which is burned out the exhaust. It does not have to leak into the oil.
A shop would check for exhaust gas in the cooling system and run a compression test on the cylinders.

Mar 04, 2013 | 2002 Pontiac Sunfire

1 Answer

I have a 2004 pontiac grand prix ...it was overheating and the gauge went into the red zone...it was leaking antifreeze..replaced hose ...now not leaking...now the engine light is on and the temp gauge is...


Yes , having the vehicle checked for DTC'S - diagnostic trouble code's should always be the first step in diagnostic process when any warning lamps are lit on the instrument cluster . Would be best to have someone with a professional type scanner , that can view engine sensor data . The engine coolant temp. sensor is a input to the PCM - engine computer . Can see what the actual temp. of the engine is . GM had bad stepper motors inside the instrument cluster's 2003 to 2006 , these stepper motors control the gauge needles . Testing what the real temp is an not going by temp gauge . harbor freight tools sells a tool under $30 bucks that can check engine temp . Infrared Laser Thermometer .. Point it at the thermostat housing . Can use it to tell what temp. the thermostat open . But , testing is the key ! Not guessing .

Jan 15, 2018 | 2004 Pontiac Grand Prix

1 Answer

My grandpa bought me 1997 Pontiac Sunfire and is letting my parents use it for the weekend. It was almost full of gas when he gave it to us. We drove it a little on Saturday and a little Sunday. On...


Float is off. Just try to put a full tank of gas in it and watch the gauge. Noone can siphone your tank BC there is a ball before the tank abling u not to siphoned.

May 30, 2011 | 1997 Pontiac Sunfire

1 Answer

Over heating


Try checking your antifreeze levels. If you antifreeze tank is low try filling it to the "Fill" or "Full" level. If your antifreeze tank is empty, remove your radiator cap, (make sure the engine has cooled off. If you try to open it while it's hot, you could get sprayed with hot antifreeze) and fill the radiator slowly. Then refill your antifreeze tank. Remember to always mix the antifreeze with water (50/50 mix) for full protection.

Mar 05, 2011 | 1998 Pontiac Bonneville

1 Answer

Antifreeze tank keeps blowing holes in it. temp gauge acting funny


vechicle is over heating need to have it looked at before serious damage occurs

Feb 14, 2011 | 2000 Pontiac Sunfire

1 Answer

1998 Pontiac Sunfire Symptoms: -Overheating


What are you going by to say it's overheating , temp gauge ? Have you test to see what the actual temp. is > Hook - up a scan tool ,what's the PCM - engine computer seeing for engine temp. ? 223 degress the PCM should turn on the cooling fan . You could buy a Non-Contact Infrared Thermometer With Laser Targeting at harbor freight ! Radiator very hot ????? What is the right temp .
Non Contact Infrared Thermometer With Laser Targeting

Could be a bad temp gauge . Is the coolant surging inside the cooling system ? Does it have a radiator cap ? Have you replaced it ?

May 06, 2017 | 1998 Pontiac Sunfire

1 Answer

2005 sunfire gauges all wacked out


All these gauges are controlled by a fuse, start there first, if they are blow just replace them, you should find all necessary info in your manual that came with the car when you bought it new.

Feb 04, 2010 | 2005 Pontiac Sunfire

1 Answer

2001 sunfire fuel gauge issues


your problem is your fuel level sending unit. replace it and everything will be good....

Nov 07, 2009 | 2001 Pontiac Sunfire

2 Answers

Overheating problem


check if there is any antifreeze in the radiator if ther is not u have a leak internal or external? how long does it take to overheat Ex. 10 miles, 20miles, or immediatly?

Jul 23, 2009 | 2001 Pontiac Sunfire

2 Answers

I don't know what the symbol means on my 1999 Pontiac Sunfire


does it look like a radiator? Low coolant sensor, may be in the overflow tank. Check your coolant levels when cold.

Jul 19, 2009 | 1999 Pontiac Sunfire

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