Question about 1999 Volkswagen Jetta
Eight (USA) domestic engine choices for this car.
The symptoms you are describing would
indicate a possible WATER-PUMP failure...
A heavily sludge condition (block) in the RADIATOR.
Before I would take ON that task...
I would do (or hire) a COLD PRESSURE test on the
vehicle to identify ALL cooling issues...
And do consider of a real SHOP MANUAL: borrow/buy.
While the internet abounds with VERY entertaining
information... there is nothing BETTER than doing
the job correctly.
Stant Cold Pressure tester:
Amazon com Stant 12270 30 Pound Cooling System AndPressure Cap Tester...
Hope this helps
Carnac the Magnificent
Posted on Aug 05, 2017
Did you install the thermostat backwards? It could be air bound.jack the car up on the side the radiator cap is on and run it to try to purg out air.your new thermostat could be bad. Remove it completely and see what happens.as for fan not working check connections and relay.if it has air conditioning that works turn it on and the fans should come on.if not there is either no power or bad fan motor.check with a test light for power at fan motor connection.
Posted on Aug 05, 2017
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Posted on Jan 02, 2017
With the symptoms you describe, coolant is not circulating through the system. Your first move to replace the thermostat was good. My next move would be to replace the water pump. Good luck.
Posted on Apr 04, 2011
i replaced water pump and thermostat in 97 jetta. the car still over heats. the bottom radiator hose gets hot and when i squeze it i can tell water is circulateing. fans do work but i dont know if they are kicking on like they are post to. how do i figure out what is going on
Posted on Jul 03, 2011
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