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How do you know if thermostat is the problem for no heat in a 94 grand prix?
Wiki User
∙ 14y ago
The most direct test is to remove the thermostat and place it into a pot of boiling water. If it opens when hot and closes after cooling, then you know the thermostat is working. If the temp gauge stays below 195 degrees, it's likely that the thermostat is stuck open and not allowing the engine to warm fully.
In addition, check your coolant level with the engine off. Ensure that the radiator is full to the top and the coolant level reaches the cold mark on the overflow tank. Too little coolant can also cause no heat because the coolant won't circulate properly. The heater core may be empty of coolant or is simply not receiving any warmed coolant due to air pockets in the system.
If the coolant is way low, remove the cap and top off the radiator. Park uphill if possible so that trapped air heads to the radiator cap. With the cap off, start the car. The coolant level will probably fall. Continue topping it off until the level is steady. Replace the radiator cap and adjust the overflow tank level. Investigate leaks if your coolant is unusually low.
Wiki User
∙ 14y ago
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2000 Jetta 2 liter motor overheating but no heat from vents when heat is turned on Can this be thermostat any help is appreciated?
my jetta keeps overheating so i replaced the thermostat hoping that was the problem but know there telling me it might be the water pump check it out maybe its that
Is the em heat on your thermostat the same as auto heat?
yes it is i am a doctor thats how i know
How do you know when a thermostat sensor needs to be replaced?
it goes out and your heat will be gon
How do you know if you need a new head gasket or a thermostat on a 1995 Pontiac grand prix?
You will need a new head gasket if you see engine coolant in the oil. I don't know about the thermostat.
How do you know when a thermostat has gone bad?
Car overheats, your heat in your car stops working
They put a thermostat in a 1993 Pontiac grand am and they still can't get heat. What else could be the problem?
I would personally check the heater core, it could be plugged. (and I know it's a new thermo, but even brand new, never used, never messed with thermos don't work as well) I would also check the themo housing, If sealer got in to the thermo it won't work right, and you will not get much heat, if at all.
You changed your thermostat and you still have no heat?
need to know what type of vec. 1992 Mercedes s500 sel
What will make your car over heat have already installed new water pump and thermostat?
Would need to know if car was overheating before waterpump and thermostat was replaced.
How do you know when you have bad thermostat?
If your engine takes a much longer time for the thermostat heat guage to reach its required level of operatiing temperature then the thermostat may be stuck in the open position which means that it will need to be replaced.
How do you know if the heater core is broken on a 92 cavalier?
you can tell if your heater cooling system/core is broke as the car will not produce heat when you turn on the heat inside the car. if it is not blowing heat there could there is a problem. the heater core itself should look like a small radiater, if that is clogged it could cause a problem. can also possibly fix this by doing a cooling system flush this will clear any blockages or expose the problem. if flush works, consider the thermostat. that also will cause no heat on inside.
How do you know if you have to change the thermostat for your overheating problem fan works properly but the temp gage goes all the way up and most times comes down possible stuck thermostat in jetta?
There is no sure way to know until you take the thermostat out and check it. After removing the thermostat, you can test it by submerging it slowly, with a tool in boiling water. You can then see the thermostat open up. If it does, this is not your overheating cause. If it does not, you need to purchase a new one. Install the new one and you will find out if that was the problem.
Temp gauge doesn't work and no heat on a 97 sonoma 4.3 vortecalready changed coolant temp sensor to no availis there a relay or something i don't know if these 2 problems are linked or what?
Having same problem. Check or replace the thermostat, it may be stuck in the open position. I had the same problem on a used vehicle I bought several years back, but in my case, the previous owner had actually removed the thermostat.
