Question about 1995 Volkswagen Jetta

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My 95 jetta over heats ive replaced water pump trermostat and my heater core dont work should i by pass it will that help and i blows my antifreze out of the reseviour or is it air locked

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See my post re overheating for new jetta,just vent the top heater hose pipe of air,the clip closest to the engine.when engine is running and hot(WEAR RUBBER GLOVES,ITS HOT)

Posted on Nov 09, 2010

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I have 2002 vw jetta wagon and it keeps over heating. We have changed the thermostat fuses relays and the heater core connector. We think the water pump is working fine because it has pressure and...


Pressure is not a good indicator of water pump operation. Pressure in the cooling system comes from the heating of the water and its expansion. Jettas come from the factory with plastic impellers on their water pumps. These have a tendency to break and fail, causing overheating issues. Most aftermarket pumps have metal impellers to prevent this from happening. I would seriously consider having the water pump replaced, especially if it is original and you have more than say 60K miles on the car. It's due for a change anyway and may save you your engine. See what this guy had to say about his Jetta.....


Engine Overheating Due to Damaged Water Pump Impeller Volkswagen Jetta...

Mar 12, 2015 | 2002 Volkswagen Jetta

1 Answer

My Wife's care overheats and the heater only blows out cold air.


check that the thermostat is in correctly as it will cause no circulation but overheating. have a compression test done to eliminate head gasket /cracked head. There could be a blockage in the heater core but I am thinking that by passing the heater fan he has also by passed the actuator( coolant valve) for the heater core. Water pumps suffer from bad bearings and very seldom anything else. check that he hasn't blocked off the water to the heater core as well
the throwing back of the coolant is the boiling of the coolant in the block ( bad head gasket) due to lack of circulation. It may be a blocked radiator as flushing doesn't fix the blocked cores . If that is the case a new radiator is in order.

Dec 31, 2014 | 1997 Lincoln Continental

1 Answer

No heat, replaced water pump


1: engine must reach 180F, and hold there , does it?
2: the coolant must reach the cab heater box, does it?
3: the fan must blow.
4: the air from fan must pass thru this core, does yours. if not
the dampers are bunged.

Mar 23, 2014 | 2008 Jeep Commander

1 Answer

95 Fleetwood Cadillac no heat changed water pump and thermostat. The heater core is not bypassed and car stays defrosted help me see why no heat is blowing out. The fan works but no heat


Sounds like a air lock in interior heater core, remove one heater hose under hood and make sure you have flow through heater core. Some vehicles have a valve that controls coolant flow through heater, check on hose for that if no coolant comming out of inter heater hoses.

Nov 30, 2013 | Cars & Trucks

1 Answer

Leaks water inside passenger of my jetta 95,and get hot


It sounds like a heater core problem. Do you smell antifreeze?? You can bypass the heater core for summer use but will need it repaired for winter heat. Hope this helps. Koladge

Aug 11, 2011 | 1995 Volkswagen Jetta

3 Answers

1996 Jaguar XJ6 heater does not heat. It just blows cold air...


All cars have what is called a heater matrix , this car has, it is inside the car behind the dash, the purpose is to provide heat in side the car, if the car is running at normal operating temp you thermostat is ok, the heater in the car is known as a heater matrix and will block up due to lack of use as water on passing throu when you have the heat on in side the car , hence the water leaves risidual that blocks it, if you keep a good level of antifreze/summer coolant in the systym it will prevent this, it is also the first palce to be affected when you lose water from the cooling systym, i will foward the detail how to clean it out, as removal is very labour intensive,

Dec 18, 2009 | 1996 Jaguar Xj Series

4 Answers

When you bypass the heater core the path for the water to go through the core is gone. Correct?, you have connected to engine water line out to the engine water input? thus bypassing the heater core........


No, you just won't have water flow through the heater core, Coolant flows through the engine through the lower radiator hose as the water pump sucks it out of the radiator and pushes it through the engine. It then flows out the top radiator hose when the thermostat opens. It then flows into the radiator to cool off.

Is your heater core leaking?

Aug 27, 2009 | Ford Expedition Cars & Trucks

1 Answer

02' VW Jetta GLS 2.0 Over Heating


Check the water pump... the impeller may be loose and the water/antifreze is not circulating.

Jul 21, 2009 | 2002 Volkswagen Jetta TDI

3 Answers

NO HEAT AT IDLE


I would almost garuntee you have a bad water pump. When water pumps get old there turbines can wear off and even though they may still be there they want be as efficient. When this occurs you can normally rev the vehicles r.p.m. to about 2000 rpm and the heat will start working.

Apr 18, 2009 | 1996 Chevrolet Tahoe

3 Answers

92 jetta has no heat blows cold air


you may need to replace the heater core and/ or the thermostat. also, make sure you have antifreeze and water.

Nov 24, 2008 | 1992 Volkswagen Jetta

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