Question about 2002 Chrysler PT Cruiser

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02PTCRUISER HEATING UP SLOWLY BUT WHEN STOPED HEATS FAST,FANS WORK ,THERMASTAT SEEMS TO WORK WATER TURNS, DOESNT HAVE ANY ANTIFREEZE IS THAT THE PROBLEM?

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2-stage fan high not working cool when driving 40+ heats up when u slowdown been there lol

Posted on Oct 12, 2009

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Of course thats the problem. if you had a manual on the pt you will find that this is a pressurized system and just water without antifreeze changes the boiling point. Flush the systen and put the correct amount of antifreeze in, and replace the radiator cap with a 12-18lb cap.

Posted on Oct 03, 2009

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2 Answers

Heat not blowing hot air and car temp gauge goes high


the way to check the thermostat is with the motor hot feel the upper radiator hose to see if can squeeze it. you should be able to squeeze it. the water pumps is big problem to

Jan 26, 2013 | Chrysler Cars & Trucks

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Problem..went to reinstall thermastat..was no thermastat in car. the housing was cracked, broken and is leaking antifreeze..why did the air work if no thermastat was in it???


Thermostat holds water in motor until it heats up to thermostats temp. While thermostat is closed (holding water back) it allows water in radiator to cool. When thermostat opens cool water enters engine through lower hose, hot water into radiator. When cool water hits thermostat it closes again and repeats the cycle. Your A/C is not dependant on heated water as when air is on, heater valve in heater hose is closed. Get yourself a new housing, gasket & thermostat and fix it right. An added bonus is you'll probably get better gas mileage with correct thermostat.

Jan 02, 2011 | Pontiac Grand Am Cars & Trucks

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I HAVE REPLACED NEW THERMASTAT AND NEW WATER PUMP, BUT STILL NO HEAT.WHAT ELSE CAN BE MY PROBLEM ? THIS IS A1995 FORD WINDSTAR VAN.


Maybe you didn't bleed all of the air out of your coolant systtem.
I had a very similar problem, last month, my heat would not go above 50 degrees F.

I had air in my heater core.

I put wheel blocks behind the back tires and engaged the emergancy brake.
I jacked the front of my van up so both tires were off the ground (about 3")
I removed the radiator cap, started the engine, and turned the heat on high.
I added antifreeze, until it was full.
I let the engine continue to run, as I watched the antifreeze level go back down, then I added more antifreeze.
After doing this 2 times, I squeezed and held the upper radiator hose. I did not release it.
I started pouring more antifreeze in and when it started to over-flow, I still kept pouring as slowly released the hose.
With the raditator level full, I replaced the cap and put some antifreeze in the coolant reservoir.
Lowered the front back to the ground and removed the tire blocks.
I stuck a guage in the inside vent and I now get a 125 degree reading.

Note...after I got the van jacked up, it only took me 15 minutes to get the air out of the system (mainly, because I squeezed and held the hose).

Nov 16, 2010 | 1995 Ford Windstar

1 Answer

My temp goes up when my car is idle and the ac on


If the temperature goes up when the ac is on, then there may be a problem with the circulation of coolant throughout the system. You said you changed the thermostat which is good. But, did you backflush the engine's cooling system so that maximum flow can be achieved?

On the other hand, the heat that comes off of the condenser can cause the radiator to cool less efficiently on hot days.

Does the fan immediately go on when the a/c is turned on? or is it the older style fan belt driven fan? Even, so, if it's an older style fan, the clutch sometimes go bad in them so that the fan doesn't spin as efficiently as it should.

Also, did you use 50/50 Antifreeze to water ratio coolant mixture?
If you use pure Antifreeze 100% concentration, then it can cause an overheat condition, because the fluid at this concentration doesn't transfer heat as well as a 50/50 solution of antifreeze to water.

Good luck fixing this problem.

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2 Answers

Cooling system


these are somethings that maybe causing it to over heat (1) not enough cooling in it.(2) water pump drivebelt (3) Radiator core blocked (4) Bad thermostat (5) fan blades broken or cracked (6)Radiator cap need to be replace (7) Ignition timing incorrect if all fails stop by your local library and get your hands on a Haynes auto repair Manual for your car wish you the best of luck Michigan Man

Dec 09, 2009 | 1995 Mercury Cougar

2 Answers

94 cutlass supreme is overheating,all fluids are fine. I did have someone tell me i need 3 motor mounts replaced. could this be an issue of the car overheating?


Over heating can be caused by a faulty thermostat and or weak water pump and dirty radiator and old antifreeze or the radiator fan now working when at idle but should not over heat when driving. Service the cooling system if it has never been serviced before. Replace the thermostat, buy some radiator flush to clean out the radiator and heater core. Just follow the instruction and replace the antifreeze and make sure it's a 50/50 mix water/antifreeze. If you not sure how to mix it 50/50 you can buy them 50/50 premixed. Water boils at 100'C so you need antifreeze mixed with it but antifreeze does not have the same heat transfer as water so you cannot run 100% antifreeze cause it does not transfer heat fast enough and you over heat. Good luck and hope this helps. Keep me posted, Be glad to help, once you service the cooling system and your still over heating, then we look at the water pump.

Jun 16, 2009 | 1994 Oldsmobile Cutlass Supreme

1 Answer

Heat gauge shows hot , have to add antifreeze although no leak


Very common fault is head gaskets.  causing coolant consumption and bubbles in radiator.  Run vehicle, have a friend accelerate once or twice hard, while you smell exhaust for sweet smell of burning coolant.

Dec 18, 2008 | 1997 Ford Taurus

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