Question about 2000 Volkswagen Jetta TDI

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2000 jetta overheating. changed thermostat and that wasn't the problem. i was told my water pump was out

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I doubt that the water pump would be faulty:- go through this checklist first. I assume motor tune or other mechanical condition is not causing the problem.
When engine running, ensure no engine combustion gas bubbles in coolant resevoir (if so, the head gasket is blown).

Check radiator cooling fans are operating ok (as required when car warms up) - if not check
1) fuse,
2) relay operation,
3) heat sensor switch.

Check for collapsing (soft) coolant hose on suction side of waterpump when engine revs above idle.
Check the coolant pressure cap is serviceable & of correct rating,
Ensure cooling system is correctly filled, bleed off any airlocks as necessary,
Check radiator cooling core is not blocked internally or externally.

Posted on Sep 29, 2009

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Well that would cause the issue if you want to know where it's at you have to take the timing belt cover off to change the pump and if you do that I would say change the timing belt at the same time because it can be a pain in the rear so times so it's easier to just have it open once.

Posted on Sep 29, 2009

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tragedy lok
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SOURCE: 96 jetta 2.0l still overheating

so u pretty much replaced everything there is that could be the problem,fans turn on right??pump is working right??thermo is new right??ok so during the process of changing every thing you could have trapped air pockets in the cooling system ive seen this numerous times you can start there its the cheapest start,1st remove the radiator cap,2nd turn heater on high setting and temp to heat max, 3rd start ur car let the system cycle thermo has to open and close at least 2x's water is going to overflow to the ground its ok just dont lketr it empty youll see bubbles like air comming out let it run like 15min like this,turn the car off let it cool then place the cap back on make sure the seal is ok on radiator cao too!!hopefully thats all u need if not u may need a head gasket repaired they sell a green liquid at kragen oriely for blown head gaskets its like 25.00 it works pretty good for about 6000 miles to 10,000 miles MAKE SURE IF U USE IT FOLLOW ALL DIRECTIONS!! GOOD LUCK

Posted on Nov 24, 2009

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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.....


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