Question about 1997 Subaru Legacy

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The car is over heating it is a 1997 Subaru Legacy GT Wagon AWD

The temp gauage keeps reading hot then warm then hot again. What is the easiest way to change the thermastat? The thermastat is on the far side of the engine under the exhaust manafold.

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Thers not need to take to garge

Posted on May 27, 2009

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2 Answers

I have a 2005 grand prix gt temp guage reads normal and heat is on and warm when start driving heat gets colder or if i change to defrost its cold air doeasnt stay hot car doesnt over heat though changed...


The heating coil is probably getting plugged up. You may have heat at idle or slow speeds, but once you get going, there is not enough coolant going through it to stay warm. Get the system flushed or replace the heating coil.

Jan 23, 2014 | 2005 Pontiac Grand Am

1 Answer

I need to change the thermastat ,,, where is it and whats the easiest way


Heed of antifreeze solution temperature!!!
You must check the thermostat operating. The thermostat location for 1997 Audi A4 1.9 TDI is on back of alternator at the bottom side of the bracket.
IMPORTANT NOTE: It is NOT necessary to replace the alternator if you want to change the thermostat !!!
Thermostat checking:
1. Cold engine. Start up the engine and watch of the water temp indicator. After first value 60 Celsius Degree you still warm up the engine until the lifter (pointer) reach 80 C deg. (second mark after 60 C deg.). At this time you let engine running at idle speed and check with your hand the thermostat plastic housing and hose temperature in bottom left side of the engine. Heed of alternator driving belt and ventilator fan !!!
2. If the thermostat is good the hose must be cold until the water temp indicator reach almost 90 C deg.
3. The thermostat opening temperature is 87 C deg.
4. If the hose is already warm the thermostat is out of order.
5. If the thermostat and the temp sender are OK the last piece out of order will be the instrument cluster.

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Dec 04, 2010 | 1997 Audi A4

2 Answers

HOW TO CHANGE THERMOSTAT ON THE V-6


First make sure engine is cool.
-Put drain pan under car, coolant will run out.
-Remove the TOP radiator hose that runs to the metal thermastat housing. Coolant will now be running out, try and direct it to the drain pan below.
-Remove the thermastat housing, BEFORE removing the thermastat make sure you TAKE NOTE at how it is situated in the casting.
- Take the thermastat housing and run a wire brush on the flat spot were the old gasket material is.
-Both mating sides of the thermastat housing MUST BE PERFECTLY CLEAN. There can not be any old gasket material left.
-Insatll new thermastat.
-Put a very light amount of PERMATEX orange high temp. silicone on BOTH sides of the new gasket.
-Put a small amount on bolt threads also.
-Now install thermastat housing, and bolts.
-Tighten bolts down a little at a time, alternating between the two, unitl till they are tight.
-Install the radiator hose, and tighten hose clamp.
-Remove radiator cap, pour in coolant, until it sits just below the radiator cap neck. This may take a little time as the system has some air in it.
-Install the radiator cap. Make sure you radiator overflow tank is filled properly.
-Remove the drain pan, make SURE ALL the tools use used are secure, and out of the engine bay.
-Start engine, and place your heater control to 'HEAT"
-Let engine run until the top radiator hose is hot, which means you thermastat has opened.
-Keep watching the engine temp AT ALL TIMES, we wnat to make sure there is no air in the system.
-Inspect for any leaks. Now when the top radiator hose is hot make sure the hose clamp is tight.
Please let me know how it goes.

Feb 11, 2010 | 1993 Buick Skylark

1 Answer

Temperature gauge is inaccurate and check engine light comes on but its not over heating and everything else is fine can it be a sensor ? The temperatue gauage didn't read anything for months but now...


Have you checked the antifreeze level lately? Low antifreeze will cause a temp sensor to give false readings. Does your heater work OK, as in does it blow hot air when heater is on? that is another symptom of low antifreeze.

As far as the check engine light coming off and on, I would bet it is the oxygen sensor that might need to be replaced.

Oct 20, 2009 | 1985 Chevrolet Monte Carlo

2 Answers

Chrsler sebring 2004 engine 2.7 the antifreeze has been leaking out on ground after driving car. also while driving...


ok one of the hose clamps is not tight enough when it warms up it expands and when it cools then it leaks so tighten all hose clamps when its warm and then again when its cooled and prob, aught to go away

Aug 15, 2009 | Chrysler Sebring Cars & Trucks

1 Answer

1995 caprice classic, No warm heat


Have you checked the heater core hoses? If they are not "hot" the heater core needs to be replaced

Feb 07, 2009 | 1995 Chevrolet Caprice Classic

1 Answer

2001ford taurus heating problem


recommend replacing coolant reservior cap also start car let it get to tempature put on glove and squeeze the upper radiatior hose together and if real weak and does not open up in your hand the water pump maybe weak but before you do all this check the condition of the drive belt because if the belt is slipping you will loose circulation in the coolant system and if there is a salvage yard near you or if it is not very expensive have you changed the temp sensor with the little wire on it not far from the thermastat housing

Dec 22, 2008 | 2001 Ford Taurus

2 Answers

1994 pontiac firebird HAS NO HEAT


Okay. warm up vehicle, get radiator hoses hot.  Turn on heater, fan on low.  Grip both rubber heater hoses close to the firewall, from the engine compartment side.  They should be too hot to hold for long.  If they are not hot, then you have a lack of coolant circulation to the heater hoses.  If they are hot then access heater core, behind glove box area.  Blend door which moves as you chose HOT or Cold, should be cable controlled, move the controls and be sure the door is actually moving. Keep me posted 

Dec 17, 2008 | 1994 Pontiac Firebird

1 Answer

2000 Daewoo Leganza heat gets just luke warm!!!


I have the same problem. we changed the thermastat. the engine coolant was full of muck and looked rusty like something was rusting away.we then back flushed the system including the heater core.It's alot better but we think the water pump propellers are rusting away. this sometimes happens. so we are keeping an eye on the temp to see if it is getting to hot or over heating if so the the water pump needs replacing. I would have the system back flushed to see if that helps you could be having the same problem I' having. Hope this helps.

Nov 02, 2008 | 2000 Daewoo Leganza

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