Question about 1995 Volkswagen Golf

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Where's the thermostat on my 95 golf gl3?

Car is running at a temp of 230 degrees, even at night when it's cool...we replaced the radiator hose, temp sending unit, changed the manifold port. This is our daughter's car...help!

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  • Anonymous Sep 26, 2008

    I have the same problem...did you find the thermostat?

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  • 151 Answers

Verify that u have sufficient coolant.The white plastic bowl should be full when the engine is hot. (Be EXTREMELY CAREFULL if u remove the cap while the engine is hot, might get splashed. Do it SLOWLY WITH A RAG)

Verify that the fans start up at normal operating temperature, which means the needle should be half way or slightly higher.

Check ur radiator to make sure all the air inlets are there. They are an aluminium color and are everywhere between the two tanks on each side. If u have a hole the size of ur fist or more, bingo, bad rad.

Make sure there are no coolant leaks by the water pump. When u stand in front of the car, it's on ur left hand side and it's driven by the strap.

If ur coolant is really old (like 3-5 years, very bad, have it replaced)

And lastly, if u used a product like stop leak, black pepper or egg whites to stop a prestone leak, u may have blocked the passageways for ur coolant. In which case u must flush the whole system.

Worst possible scenario is a blown head gasket, but usually this is obvious. If u have questions, don't hesitate to ask, i will help u in replacing parts or telling u what u find means.

Posted on Sep 08, 2008

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Can you tell if the coolant is flowing thru the radiator ? Have you tried it with the thermostat removed ?

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2006 CHEVY COBALT OVERHEATING HAS NEW RADIATOR WATER PUMP AND THERMOSTAT


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I have a 1999 chevy malibu , front wheel drive with a 2.4 litre twin cam engine . the car overheats and water pours out of overflow hose. what is the cause of this?


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hoses for deterioration and sponginess, its unlikely but possible your hoses are collapsing due to poor condition and not letting water flow through it

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check water pump ( hard to diagnose, some cars have a weep hole at the bottom of the water pump that drips water while running at any temp. )

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1997 Grand Cherokee Laredo, 4WD, 5.2 V8. My Jeep overheated today. When I went to open the hood I could feel steam. So I waited for it to cool before taking the radiator cap off and see no fluid in it....


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Are you sure the thermostat was in the wrong way ?.

The thermostat is located in the bottom hose unlike most conventional cooling systems.

The thermostat in the Northstar engine is a dual action device.
One end of the stem is the Thermostat(obviously) and at the other end is a spring loaded pressure valve(the thinner end).

Make sure the thermostat end is nearest the rubber hose and the pressure valve end is in towards the engine.

Also note that the cooling fans don't come on until the coolant temperature hits around 225 degrees.
During normal highway driving the fans will very rarely come on(if at all) due to constant air flow through the radiator.They will only usually come on in heavy traffic conditions on a hot day.
But......if you have the Air Con switched on, the fans will run all of the time.

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The most common overheating problem with the Northstar engine is a blocked purge line(small hose).The purge line is designed to purge air out of the cooling system.
There is a small diameter hose coming from near the top of the coolant tank (not the cap) ,this is the purge line.
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If the hose is clear, check for blockage at the nipple on the tank.Or trace the hose back until you find the blockage.
The hose goes in to the engine to a crossover and comes out the other side close to the thermostat housing,the blockage may be there.

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