Question about 1995 Cadillac Seville

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Over heating car over heats occationally, had the radiator and cooling system flushed,new thermastat. coolant level and mix is good. some are telling me head gasket but had the system presure tested and it is ok. all that's left is water pump but could it be a head gasket???

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Sounds like you blew a head gasket to me. There IS a test procedure that you can do to verify this:


1. remove all the spark plugs.

2. Apply about 90 lbs of constant shop air into each cylinder and watch for air bubbles in the radiator. Perform this on ALL the cylinders one at a time.

Posted on Jun 26, 2008

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Whats normally wrong when you get no heat on a 2000 Pontiac grand am v6 3400


Water level too low in the radiator.
Air in the cooling system.
Blocked heater core.
Stuck or disconnected shut-off valves.
Sticking thermostat.

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2001 mercury villager over heating and no heat from heater have replaced thermostat ,radeator and cap water pump ,temp.sensor


Have your coolant system flushed then if the problem still exists then replace the heater core because it is clogged.

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The radiador and transmission fluids are mixed and the van overheated. Why?


The transmission is cooled by the radiator. The transmission cooling lines go into the radiator where Inside the radiator these is a heat exchanger that has sprung a leak. This is where your fluids are mixing. Your radiator is loosing coolant into the transmission ( not a good thing ) . Your transmission fluid is now contaminated and may fail soon unless the problem is fixed quickly,however the damage has already been done. At the very least you will have to replace the radiator, flush the cooling system and flush the transmission and install a new transmission filter.

Aug 08, 2011 | 1998 Plymouth Voyager

1 Answer

Over heating


Check coolant levels. Check for leaks by doing a pressure test on the car. Make sure the thermostat is operating correctly. Inspect radiator and water pump. If you can't see anything wrong and coolant levels are good, try flushing and filling the cooling system to see if that helps. Also is the radiator fan operating correctly. Good Luck.

Jul 05, 2011 | 2002 GMC Envoy

3 Answers

We just replaced the radiator and the thermastat but the needle still goes to hot


replace the temperature sending unit. Its right there by the thermostat. You can get this at any auto parts store. just need an open end wrench to change it. they do go bad(found out the hard way several years back). I hope this helps you

Jan 13, 2011 | 1999 Plymouth Voyager

3 Answers

Luke warm heat in a 2002 expediton


Start with Flushing out your cooling system. Flush it out with Preston Radiator flush, you have your preference of ether the super flush which takes 3-6 hours or the 10 min flush which is good if you don't have the time to flush out your cooling system.

After you have flushed out your cooling system, replace your thermostat and you should be good for another cold winter driving. What happens is that after a few years of the coolant not being serviced, the coolant crystallizes and clogs up the heater core and radiator causing poor circulation. Poor circulation will cause poor heat and or overheating issues to the engine.

Before you go through all that inspect to make sure you have the right amount of coolant in your cooling system.

Good luck and thank you for using fixya

Nov 04, 2010 | 2000 Ford Expedition

1 Answer

The heater takes longer to heat up then it used to, and when it does it des not stay heat. It blows out cool air? We have gone through the fuel system and cooling system without success. Antifreeze in...


the fuel system is seperate from heating system.check water pump the impeller could have deteriated i have seen this in another cavalier,once i removed water pump the blades that move the water were full of holes.but first make sure ther is good flow to the heater core.also hope you used a 50/50 mix of antifreeze because solid antifreeze wont heat up.

Jan 10, 2010 | 1992 Chevrolet Cavalier

2 Answers

The heat on my 2000 Ford Taurus is not that good. Takes forever to heat up, but still not that good. Turning the fan up on high makes it worse. Best lukewarm heat is turning my switch to halfway on fan....


these cars are infamous for coolant contamination cause restrictions in the heater core. i suggest performing a heater core flush followed by a complete cooling system flush. i have seen this dozens of times in these cars and this has been the fix nearly every time. good luck!

Jan 08, 2010 | 2000 Ford Taurus

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Temperature guage keeps going hot and cold


buy you a new temp sensor from the dealer not autozone,try that,my suburban did the same thing cause i got a cheap piece of **** sensor from az

Jan 05, 2010 | 1997 GMC Sierra

2 Answers

Air conditioning works but not heat. blows out


At the radiator, drain and then flush with water then add 1 gallon of new antifreeze and top off with cool water. Now the cooling system will work.
If you have not performed routine maintenance on your cooling system - it will clog the heater in 10 years or less. Sometimes a bottle of radiator flush (purchased at any walmart or kmart) can clear the heater core - but you will have to run it with the heater on full heat setting for a few hours of driving.

Let us know!!

Oct 10, 2009 | 1999 Ford Taurus

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