Question about 1994 Buick Park Avenue

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Interior Thermostat Malfuntioning

The temperatur reading for my heater and a/c is digital with the automatic feature. It no longer read an accurate degrees. Please advise what the cause/solution may be and also, does that effect the operations of the heater?

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Your problem isn't a thermostat. Your problem is a temprature sensor that I think is mounted in the section of the dash you are looking for. Call your local dealership parts department and it is probably gonna be a dealer part replacement anyway. I f you have found this helpful, please post as such. If you plan on taking it to your dealer, please post this as a fixya. TY

Posted on Jan 15, 2009

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Posted on Jan 02, 2017

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Changed out water pump and thermostat and vehicle runs high temperature what could be issue?


Reasons the Temperature Gauge Reads High

If the temperature gauge reads high, it could mean your engine is overheating. Another reason your reading might be high is you could be losing coolant. A small leak or evaporation may cause your radiator to slowly lose coolant. A third reason your temperature gauge reads high could be because the thermostat is broken. If this is the case, you may need a coolant temperature switch replacement. The last reason the temperature gauge could read high is because of a water pump, or water pump gasket failure. If the water pump is malfunctioning, it may need to be replaced by a professional.

What to Do If Your Temperature Gauge is High

If your temperature gauge is reading high, it means your car is overheating. This is a very serious matter and you should never drive an overheating car. If your car starts to overheat, shut off the air conditioner and open the windows immediately. If this does not reduce the overheating, turn on the heater as high as it can go. If this still doesn't work, pull over on the side of the road, turn off the engine, open the hood carefully, and wait until the vehicle cools down. Never open the radiator cap while the engine is hot - coolant can spray and burn you. Once the vehicle has cooled, take the car to a mechanic right away so they can diagnose the problem. Cars are especially susceptible to overheating in hot climates, like what's common in cities like Los Angeles, Phoenix, Las Vegas, or Atlanta.
The temperature gauge is an important tool in your vehicle that shows the temperature of your engine's coolant. Contact YourMechanic and have your car inspected for overheating if it reads too high, as this can cause serious problems...

Reasons the Temperature Gauge Reads Cold

On most vehicles, the temperature gauge reads cold until the engine has run for a few minutes. If the temperature gauge still reads cold after the engine has warmed up, the gauge may simply be broken. Another reason the temperature gauge could read cold is if the thermostat in the vehicle stays open. With the thermostat stuck open, the engine can be overcooled, causing a low temperature reading. If this is the case, the thermostat may need to be replaced.

Oct 28, 2017 | Cars & Trucks

1 Answer

Jetta 4 2.3 v5 heater does not work,only blows cold air


Hi, if the temperature gauge read zero then the thermostat is gone.
If it's just no heat and the gauge on the dash is reading normal coolant temperature then it may be the Coolant Temperature Sensor. If the heater core was gone there should be a leak inside the car somewhere. Hope this helps

May 31, 2014 | 2000 Volkswagen Jetta TDI

1 Answer

. The blend door actuator seems to be wo


Are the hoses hot to the touch?
If not, then check your cooling system for either air-pockets or blockages.
If the main radiator is also not hot when running and if the temperature gauge is reading high, then change your thermostat.

If, as you say both hoses are the same temp and hot to the touch, then is the interior blower motor turning?
Have you checked the condition of any interior cabin air filter?
Also check that the heater matrix core hasn't been clocked up with dirty/fir/fluff etc.

Nov 12, 2012 | 2000 Oldsmobile Bravada

1 Answer

2005 Buick rendezvous heater blowing cold and temperature gauge not working properly?


Faulty coolant temperature sensor and a faulty heater control valve.

Jan 14, 2012 | 2005 Buick Rendezvous

1 Answer

My 2000 tahoe is blowing cold air.


Check your coolant level and make sure its full, next i would look into replacing your thermostat, if your thermostat is stuck open your engine isnt able to reach operating temperature therefore heater output suffers, your coolant temp gauge should read around halfway when the engine is hot if its not look into replacing the thermostat, if your gauge is reading halfway check the cable going to your heater box when you adjust your temperature on your heater controls its possible that the cable broke or the blend door inside the heater box is stuck into the cold position allowing only cold air to come through the vents.

Dec 06, 2010 | Chevrolet Tahoe Cars & Trucks

1 Answer

2001 pontiac aztec, temp guage shows (very) high) temp reading. I take the battery cable off, replace cable, then it appears normal. I have done this for 4 months, everything is OK. Now it no longer solves...


if you have high miles, 75k or more I would go ahead and have tempature sensor and thermostat it self change. I don't see battery cable would have any bearing to the temperature guage or cooling process. Both switch work almost the same, at time it work well other time it read or work incorrectly because it a sign of unit becoming faulty. If the temperature sensor is faulty half of the time it well give you incorrect reading however if the temp sensor working properly and the Thermostat is not, you will also get a high temp reading due to the Thermostat is not working properly allowing the hot antifreeze to flow out from the engine to the radiator which cause the hot antifreeze to be remain lock up in the engine block. Thermostat suppose to open and close when it reach its temperature; at the same time I would also replace thermostat switch which operate the cooling fan. all three tend to go bad over times; replacing all three is a great ideas. Thermostat, thermostat switch and temperature sensor.

Oct 21, 2009 | 2001 Pontiac Aztek

1 Answer

No warm heat comes out, just cold air


it is possible the thermostat is the problem, but if it is stuck closed the engine coolant temp gauge (if you have one) would show an overheat reading. most temps gauges will read 195 to 205 degrees. the other possibility is if you have an automatic climate control system, the blend door motor may have failed and will not adjust correctly to the temperature you have set for the interior

Oct 13, 2009 | 2003 Pontiac Grand Am

2 Answers

Intermittent problem. 93 Lincoln TC with Automatic Temp Control. Sometimes the defrost position won't allow heat to windshield. Sometimes heat comes out of vent when everything is off. Sometimes A/C is in...


This could be a cabin air temperature sensor. It could also be a failing air door actuator. If the interior temperature reading on the climate control panel seems to be accurate, the air door actuator is the more likely culprit. It is a small electric stepper motor which is more prone to wear than other components of the A/C system. The A/C control computer can also be at fault, but if it appears to read temperature accurately and doesn't flicker or show an error message, it is probably OK.

Sep 20, 2009 | 1993 Lincoln Town Car

2 Answers

Engine running hotter than normal. running heater tends to draw


Yes replace the thermostat and read the number on the thermostat try to get a 180

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1 Answer

2003 kia sedona over heating and no heat


This Problem is Usually Caused by a Malfuntioning Thermostat. Change the Thermostat and let me know what you get. Please Rate My Solution, I Need all the Help That I can get! Thanks!

Jan 26, 2009 | 2004 Kia Sedona

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