Question about 1993 Pontiac Sunbird

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High temp temperature went to 260 degrees. i changed the thermostat and still have the same problem. doesn't heat up at all. what's now...

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Nine chances out of ten she is airlocked that will cause ur temp to peak and actually not be hot it will also cause your heat problem.

Posted on Jan 26, 2009

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Tempature gauge went up to 260 in red. bell was dinging inside where is the thermostate


Normal operating temp for the I6 engine is 210 degrees, so 260 is a little high. Make sure it has coolant....rent a coolant system pressure tool to introduce pressure into the system. You want to rule out any leaks. If no leaks, more than likely your thermostat is stuck closed. It's a PITA job, but while you're in there should replace the temperature sensor located right above the thermostat.

Mar 05, 2014 | 2005 Chevrolet TrailBlazer

1 Answer

My 99 surburban temp surges 210 t0 260 then goes back to 190 and blows white smoke some times is it the intake gasket


white smoke means coolant is getting into the combustion chamber of the engine which would mean your head gasket is bad. I would change your thermostat too. it doesnt sound like it is working properly. your thermostat is probably getting stuck closed and that is what is leading your temperature to get high. The high heat, or even if your truck over heats a few times, it ruins the integrity of your head gasket.

Nov 24, 2012 | 1999 Chevrolet Suburban

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1996_gmc_sierra Heat gauge started going from 260 degrees back to normal. I replaced heat sensor then thermostat. This summer had complete radiator and cap put in. The gauge says its running at 230 an


My Mountaineer had a similar problem. When driving it, the temp needle would slowly go up and up for like 3 minutes then it would come down within about 30 seconds. Then it would slowly rise again. just kept doing this over and over but it never went too high. My gauge didn't have numbers on it but it would go up about half way (not near the too hot level though) then fall back down to about a quarter of the way on the gauge. Found out that the fan clutch was bad on my radiator fan. It was not engaging and disengaging at the right times. New fan clutch solved the problem and probably saved the engine from overheating eventually if it had gotten even worse.

Oct 20, 2011 | GMC Sierra 1500 Cars & Trucks

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I Have a 1997 Pontiac Grand Prix, For months now my temperature gauge has been running hot to nearly 260 degrees. The car has never officially overheated although the fans do kick in, In the last few...


What's chances that the temperature gauge or sender itself is wrong?
Is the heat exceptionally hot? What temperature is the heater dicharge when the gauge reads 260?
I think that the sender is not expensive, try that. An auto parts store could get you an inexpensive dial gauge that you might be able to install in place of the sender.
Gary

Aug 02, 2011 | Pontiac Grand Prix Cars & Trucks

1 Answer

Temp. gauge reads high some times. but the motor really isnt hot


It sounds like the coolant temperature sensor is beginning to fail. It is highly unlikely that the in-dash gauge is a problem. The coolant temp sensor inputs to the computer affecting everything from radiator fan speed, engine fuel/air calibration and a variety of other parameters.

Be absolutely certain to "burp" every bubble of atmosphere from the coolant system too. Air bubbles have the amazing ability to prevent coolant flow and will cause all sorts of problems, especially if the bubble wants to hang around the temperature sensor location.

Normal operating temperature is going to be around 210 F.

Most Autozone, Advance locations will read engine problem codes at no charge, so drop by one of those locations and let them read the problem code.

My guess will be the coolant temperature sensor. Then have the problem code reset, remove all air from the coolant and let us know how this worked.

Mar 11, 2010 | 2004 Chevrolet Impala

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Engine temp gage spikes to 260 degree when


are you sure the cooling fans are working?
Is the coolant temp gauge telling the truth?
have you lifted the hood and heard the coolant bubbling into the overflow?
Or heard the tinging sound of a red hot engine?
If he did a liquid test with the dye,and it changed colors it should have changed very fast,
Another thing to think about if he was to take the fan belt off,and pull the thermostat housing off,and removed the thermostat,Now pour coolant into the thermostat hole to almost the top,Now start the car and see which side the bubbles come from,left or right,that will be the gasket that is leaking not both.

Jan 23, 2010 | 1997 Chevrolet Monte Carlo

1 Answer

Where is the temperature sensor located on a 2002 hyundai accent


okay temp is not hot enough check thermostat temp rating is it 195 degree etc. are you in a cold climate state? Maybe you need to get a thermostat of a hotter degree[four seasons 195 degree should do it]. If this is what you have (195 deg. thermo) then it might be stuck open not allowing the heat to build up. Another possibility is air in the radiator system, bleed system. This too might be of help the blend door, which is operated by the HOT to COLD lever on your climate control panel, might not be moving all the way closed to stop the cold air from coming in the mix area with the heat. Move the lever back and fourth to feel any change in heat with your hand. Put the defroster on fan on high and put one hand near the defroster vent thee other hand moving the temperature selector. Do you have some sort of heat and you can feel the difference from hot and cold, then my recommendation is to check thermo degree rating, if ok then try to flush radiator, and if that does not work --replace Heater Core. Thank you for allowing me to help you if you need me just write,Lee

Jan 09, 2010 | 2002 Hyundai Accent

4 Answers

The temperature gauge on my 2002 grand prix dose


the temperature sending unit on a 97 grand prix 3800 gt(which is also the coolant temperature sensor) is not accurate. the sending unit part of this sensor only sends info to the guage on the dash. the coolant sensor part sends info to the computer of the car. it is located under thermostat and somewhat difficult to get at. i had put a brand new one in and my temperature on my dash is all over the place---even with good thermostat and properly bled system. when i hook up a scanner to my computer, the coolant sensor is sending the computer(ecu??) what seems to be the right temp. anywhere from 194 degrees to 217 when hot. the guage however on dash go from 160 to 260 in less than 2 minutes.

Nov 16, 2009 | 2002 Pontiac Grand Prix

1 Answer

97 transport 3.4 engine- New radiator, thermostat,temperature sensor, water pump and new low coolant level sensor. Temperature guage goes to 260 degrees but engine does not over heat. Bled air from cooling...


Are your cooling fans working? that will definately be a problem if not working. if they are working shut car off and feel the radiator is it the same temp all over or is it hot in only top or one smaller area. if you do not have same temp feeling on all of radiator your radiator may be plugged.

Oct 09, 2009 | 1997 Pontiac Trans Sport

1 Answer

Freezing no heat with temp gauge going to 260 and red light on


You didn't say what kind of car it was, but with no heat and high readings on the gauge, my guess would be your coolant level. If that isn't the problem, then try replacing the thermostat. Other possibilities would be a defective temp sensor, or a bad electric fan on the radiator.

Feb 21, 2009 | 2004 Pontiac Grand Am

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