Question about 1996 Chevrolet Cavalier

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Engine running hot after thermostat installed

Engine started to run hot then lost heat. checked the coolant and it appeared ok. installed a new thermostat added coolant the engine still runs hot and still no heat.

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  • Anonymous Mar 27, 2014

    car has no heat. car is running hot.

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Try removing the thermostat and re- assemble everything. Drive it and see if the car still runs hot; if it does it's probably going to be the water pump;

Posted on Apr 12, 2014

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You have a bad water pump the water isnt circulationg as it should so you need to replace the water pump and soon before it causes damage

Posted on Jan 22, 2009

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This is a Classic Sign of a Dead Waterpump.

Posted on Jan 22, 2009

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1997 Camry 4-cyl fan works but heat very weak - coolant level ok


Probability 1) The thermostat is probably stuck open, coolant is not getting hot enough from the engine to provide heat.

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Mar 01, 2011 | Toyota Camry Cars & Trucks

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Poor heat inside car. some heat when fan on low but when fanspeed is increased heat is lost.


Hello,
It sounds like you have an issue with the thermostat, or blockage in your cooling system.
Here's a few things you can do to check both.
How to test the thermostat in most vehicles;
Make sure the heater is off, start the engine and let it run for 6 to 8 minutes, ( this will allow the
engine to reach, " normal operating temperature "), from the inside of the vehicle turn the heater
temperature on high and turn the fan speed on high.
1. Listen very closely for a click sound from the engine, ( most thermostats make a click when
they open )
2. Watch your temperature guage, it should begin to lower as the coolant starts to circulate.
3. Usually within a few minutes the radiator fan will kick.

If the thermostat appears to be working, do the following.
Turn the engine off. While it's still hot, carefully reach back behind the engine, at the firewall, you should see 2 hoses beside each other, ( around 1 inch in diameter ), feel both of these hoses. If they're both hot then the coolant is circulating fine, but if only one of them are hot, that means something is blocking the coolant from running through the heater core.
If you have blockage, the best thing you can do is have the cooling system flushed and refilled.

I hope this helps you.

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1 Answer

Car overheated and lost all power. how do I get it to start?


ENGINE NOT GOING TO START IF GET TOO HOT FIRST THING I WOULD REPLACE THERMOSTAT AND RADIATOR PRESSURE CAP THEN ADD COOLANT UNTIL COOLANT LEVEL CORRECT THATS WHEN THERMOSTAT OPEN UP AND TOP HOSE HOT.CHECK FOR LEAKING RADIATOR HOSES CHECK TOP RADIATOR HOSE CHECK BOTTOM RADIATOR HOSE.CHECK FOR LEAKS AROUND THE RADIATOR LOOK DOWN BELOW COOLANTS FANS CHECK FOR LEAKS AT RADIATOR CORES OR LEAKS AT THE RADIATOR PLASTIC SIDE CONTAINERS. CHECK FOR LEAKS AT WATER PUMP WEEP HOLE AND CHECK FOR LEAKS AT THE HEATER HOSES AROUND ENGINE BLOCK TO THE HEATER CORE HOSES. THERE IS A REASON CAR OVERHEAT.IF CAR OVERHEAT WHILE DRIVING YOU HAVE FAULTY THERMOSTAT OR LEAKING OUT COOLANT OR BLOWN HEAD GASKET.IF ENGINE OVER HEAT WHILE SITTING DURING A LONG IDLING PERIOD.YOU COULD HAVE FAULTY COOLANT TEMPERATURE SENSOR OR FAULTY COOLING FAN FUSE OR RELAY.HOT WIRE COOLANT TO SEE IF IT RUNS IF NO REPLACE FAN MOTOR. IF YES FAN MOTOR COULD HAVE FAULTY WIRE OR PCM FAILURE. CHECK ENGINE CRANKCASE IF OIL LOOKS LIKE MILK SHAKE ENGINE HEAD GASKET LEAKING.

Nov 26, 2010 | 2002 Mitsubishi Galant

1 Answer

Running hot, coolant blowing out reservior cap, changed thermostat same problem, removed thermostat problem ok,but now no heat. is there a coolant fill valve that needs to be opened when filling coolant....


first have the cooling system and cap pressure checked, system should hold pressure forever, and so should the cap, running without thermostat will cause uneven engine heat and affect emissions

Nov 04, 2010 | 2000 Chevrolet Cavalier

1 Answer

My truck keep running hot what's wrong?


Have you checked the thermostat and/or the coolant level? SAFETY: DO NOT DO ANY OF THIS WHILE THE ENGINE IS HOT!

To check the coolant level, open the hood and look for a plastic cap with the thermometer symbol on it. (Do not confuse this with the windshield washer reservior, which has a windshield symbol on it). With the engine cold, look through the translucent plastic and compare the coolant level to the raised markings on the reservior. Fill as needed with a 50/50 mixture of coolant and distilled water.

To find the thermostat housing, follow the radiator hoses back to where they enter the engine block. You should see a hemispherical housing held on with two bolts. That is the thermostat housing. Remove the bolts and the thermostat, being careful to note how everything was positioned. Replace the housing and refill any lost coolant. Realize that we are still in the diagnostic phase. Run the engine until you are satisfied that it is not over-heating. It will not hurt the engine to run without a thermostat, but your heater will not work. To install a new thermostat, remove the housing and clean off all the old gasket and install the new one that comes with a new thermostat (if you do not clean off all the old gasket before installing the new one it will probably leak). Put the new thermostat in place in the same position as the old one, replace the housing and refill any lost coolant.

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1st check the coolant level to make sure it's ok, low level can result in insufficient heat. What is going on with the engine temp? Is it running on the 'cool' side or normal range, in the normal zone, or running hot? If it is on the low side of normal, you may need a new thermostat. If the thermostat sticks open, the engine won't reach operating temp, and you will have minimal heat.

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No heat ..help installed new heater switch, replaced water pump..replaced coolants, and thermostat......................what else could it be? Nissan 2003 GXE Sentra 1.8 L Engine/...


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report results.

Oct 29, 2009 | 2002 Nissan Altima

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