Questions tagged [thermostat]

83 questions
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5 answers

Car won't reach operating temperature

Here's a seemingly simple problem - I noticed that the temperature gauge of my mother's 2004 Opel Meriva 1.7CDTI won't ever climb above minimum. I checked the OBD readings to see if it was a defective coolant temperature sensor but it showed that…
8
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2 answers

How does the thermostat work?

What happens when the thermostat is stuck open or closed? How does it work?
George
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Thermostat behavior and failure modes

If Zaid's excellent How can I test my thermostat? is "Thermostats 101" then this might be the beginning of "Thermostats 201"… My VW Jetta TDI (diesel) has been running cold (about one or two marks on the temperature gauge) instead of being pegged to…
dlu
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6
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2 answers

Should I use both gasket and silicone sealer or only one on thermostat?

Sorry If this is a stupid question but I'm a noob with mechanic work. I am replacing the thermostat on my 98 Nissan 200SX. I bought both a gasket and blue rtv silicone made to make or seal your own gasket. Should I use both together or just one. My…
Cam Jones
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6
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4 answers

Should you change a thermostat when changing your water pump

Just got my water pump changed. Now my thermostat is trying to edge up. Should you change your thermostat when you change your water pump?
user23699
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6
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3 answers

Does overheating that goes away under high RPMs indicate a sticky thermostat?

Sitting in traffic, my car's thermostat goes up to the red. If I put it in neutral and rev it, it goes up a tiny bit, then suddenly drops back to normal. Is that the thermostat sticking, or something worse? Vehicle is a 1991 Mercedes 300E
user11915
6
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2 answers

How can I test my thermostat?

How can I tell whether a mechanical thermostat works as it should? Is there a test that can definitively tell me if a thermostat is good or bad?
Zaid
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6
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3 answers

How to know when thermostat is open?

Is there a way in modern vehicles to know when the thermostat is on vs off? Is it possible to tell when you don't have access to under the hood, IOW when you're driving?
amphibient
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6
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1 answer

Cooling system flush procedure questions

I am going to do a cooling system flush and after some reading and watching some YouTube videos I noticed that people take different approaches. So I have the following questions: I understand that after you have drained the cooling system and…
Viriato
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5
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what in the thermostat opens when it reaches a certain temperature?

what actually opens when it reaches the certain temperature, is it the spring or is it the copper, or does the heat of the engine make the spring softer allowing it to come up and let coolant start circulating?
5
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2 answers

Vauxhall Corsa 1.3 CDTI Thermostat replacement?

My Vauxhall Corsa 1.3 CDTi 2011's thermostat is stuck open so I am going to have to buy a new thermostat, the problem is I have no experience with car maintenance or repair, I haven't been able to find anything on-line so far either as it's not a…
Kieron606
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5
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Why don't thermostats have a sensor?

One of the more common reasons of overheating is a stuck thermostat. One of the most common reasons for blown head gaskets is overheating. One of the most expensive vehicle repair procedures is head gasket replacement. Most thermostats, on the…
amphibient
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Saturn ion 2007 Temperature gauge

My car temperature suddenly drops down while driving and won't move until I remove the battery and put it back... What could be the cause pls? I have change the engine coolant temperature sensor or do I need to change again? And I was told it is not…
4
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1 answer

2004 Accord No Heat

My son has a 2004 Honda Accord EX 2.4L. The interior heat stopped working and he can't defrost his windows in the morning. Here are the things I've done to fix the problem: Replaced the thermostat Replaced the water pump Replaced the radiator (it…
G. Mill
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2002 Honda Civic Overheating -

So I have a 2002 Honda Civic Lx. I’m not really too shabby with this car thing. We have changed my thermostat. My dad has replaced one of the hose. The system has been flushed. I don't know what's my next step. The thermostat out into the car…
Monique Gibson
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