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Thermostat symptoms of bad thermostat

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Usually no heat in cabin on a cold day around 30 degrees

Could fail closed,maybe & overheat motor

Posted on Nov 27, 2012


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Posted on Jan 02, 2017


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00Linc ls v8 bad thermostat symptoms heat gets hotter underacceleration

Yes, that could easily be a thermostat going bad. Listen for you water pump as well. Symptom of that going bad is a high pitch squeal upon start up.

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Will a clogged air filter cause your car not to heat up?

it will cause your engine not to run, which would never produce heat.
If your engine runs, it may be low on coolant, have frozen plumbing, a bad water pump, a leaky hose, a bad thermostat, or a clogged something. Diagnosing the symptom before buying parts pays off every time.
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Symptoms of a bad thermostat in chevy cavalier

bad thermostat will cause engine to heat up and your temp gauge will go up they usually stick and won't open

Dec 26, 2013 | 1999 Chevrolet Cavalier

2 Answers

No heat

If you have no heat in your vehicle then it is probably the heater core which is just a small radiator that sits behind the glove box. The thermostat itself is probably located where your top radiator hose connects to your engine. It is an easy and cheap fix, just pull the hose away after undoing the clamp and you should see it. If it is not there, then it will be in the bottom hose. Hope that helps you out.

Apr 20, 2013 | 1997 Buick LeSabre

1 Answer

What could cause my problem.

have u checked the waterpump it might be bad

Jun 26, 2012 | Pontiac Cars & Trucks

1 Answer car idles smoothly when cold, then when it gets warmed up it idles very low and i also notice my fuel consumption in the mornings after cold start is much more than when i drive the same distance...

The idle is generally higher along w the fuel consumption when cold. Poss coolant sensor,, all sensors work together to adjust idle & adjust air/fuel mixture. A bad thermos would give u other symptoms too, {bad heating/ AC) Good luck scan it 1st & have all the SENSORS READING READ & ck for codes.

Oct 14, 2017 | 2005 Toyota Yaris 1.3

1 Answer

I used bars head gasket sealant in my car will it make my thermostat go bad

it could if it acts as a glue & sticks the moving part of the thermostat together disabling it from opening if the engine shows symptoms of overheating you will know where the problem is........hope this helps.......cheers.

Sep 19, 2011 | 2007 Pontiac Grand Prix GXP Sedan

1 Answer

No heat

These are the usual symptoms that I would normally check for if there is not heat. Of course there are other troubleshooting guides and issues but just looking at these might help:

1. low radiator fluid
2. clogged heater core
3. bad thermostat
4. heater valve not working
5. bad radiator

I hope this helped Tim

Nov 20, 2010 | 2000 Chevrolet Silverado

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

I had the heads checked plus i just replaced the valve cover gasket also the radiator has a good flow to it so how can it be bad 1998 Cherokee owner

What are the bad symptoms?

You don't mention if you have an over heating or oil leak problem?
You could have a bad thermostat or leaking oil pressure sender and have overheating and oil leak problems.

Apr 23, 2010 | 1998 Jeep Cherokee

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