cooling fan

Asked by Aug 24, 2012 at 01:48 AM about the 2003 Volkswagen Jetta GL 1.8T

Question type: Maintenance & Repair

Think I need a new mechanic.  Vw overheated and they diagnosed it as the aux or secondary water pump.  I picked
up my car when finished and 10 mins into the drive it over heated again!  I then realized my cooling fans were not
coming on at all...even after running air cond.  So I had it towed back to shop.  Now they are telling me its the
primary water pump that needs replaced and that a faulty water pump causes the fans not to work.  I do not
believe this is true.  What is your opinion?  Thanks   

3 Answers


Lol, no. If the water pump wasnt working the fans should be going crazy as it overheats. Things to check are ECT sensors, and the fans and wiring themselves, along with the fan relays.

1 of 1 people found this helpful.

If the pump uses a plastic impeller, these often crack and then slip on the shaft, so there is no water circulation, meaning the radiator fans won't come on (since the sensor is nor getting any hot water from the engine), and the motor overheats. The pump will need to be replaced (new one should have a metal impeller, which won't break) EBdR

I just finished changing my fan motors on my 2003 Volkswagen jetta and fan motor still didn't come on but when I turned on AC both fans came on could the wires be crossed

Your Answer


Looking for a Used Jetta in your area?

CarGurus has 27,985 nationwide Jetta listings starting at $1,650.


Volkswagen Jetta Experts

  • #1
  • #2
  • #3
    Tom Demyan
View All

Related Models For Sale

Used Volkswagen Passat
307 Great Deals out of 26,746 listings starting at $1,500
Used Honda Civic
347 Great Deals out of 52,617 listings starting at $1,200
Used Honda Accord
540 Great Deals out of 94,361 listings starting at $1,300
Used Volkswagen GTI
80 Great Deals out of 6,749 listings starting at $900
Used Volkswagen Golf
78 Great Deals out of 4,764 listings starting at $600
Used Toyota Camry
807 Great Deals out of 71,840 listings starting at $175
Used Toyota Corolla
643 Great Deals out of 66,330 listings starting at $1,449
Used BMW 3 Series
963 Great Deals out of 33,201 listings starting at $1,000
Used Audi A4
197 Great Deals out of 12,429 listings starting at $1,500
Used Nissan Altima
751 Great Deals out of 67,419 listings starting at $750
Used Mazda MAZDA3
198 Great Deals out of 25,996 listings starting at $1,900
Used Ford Focus
408 Great Deals out of 71,381 listings starting at $999

Used Cars For Sale

2018 Volkswagen Jetta For Sale
11,854 listings starting at $11,380
2017 Volkswagen Jetta For Sale
52 Great Deals out of 2,831 listings starting at $9,990
2016 Volkswagen Jetta For Sale
34 Great Deals out of 1,673 listings starting at $6,987
2015 Volkswagen Jetta For Sale
124 Great Deals out of 3,663 listings starting at $6,495
2014 Volkswagen Jetta For Sale
92 Great Deals out of 2,283 listings starting at $5,495

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.