Overheating due to fans not working

Asked by Gweeds Jun 23, 2019 at 01:09 PM about the 2000 Chevrolet Venture LS Extended

Question type: Maintenance & Repair

Hi - I have replaced the water pump, thermo switch, checked the relays and
fuses and replaced the fans with new oem replacement.  I have had my head
gasket replaced and there aren't any leaks and doesn't overheat on cooler
days without the fans.  When I turn on the A/C the fans do NOT come on and
but when I unplug the thermo switch the fans turn on low then high.  As far as
I can tell with that test is that the wiring isn't shorted out anywhere.  I am
about to install an aftermarket wiring harness for the fans, but would rather
get it working correctly, as I can't keep driving around with the thermo switch
unplugged.  I am starting to boil it down to a bad ECM or the A/C.  The A/C
hasn't worked in this van since I bought it and drove it around for 2-3 years
before the head gasket went and after it was fixed everything else went and it
has been a hassle ever since.  Any ideas or help would be greatly
appreciated.

1 Answer

Gweeds answered 5 years ago

Update-used a 4 season aftermarket wiring harness and spliced it in. Fans now start at 92c and go off when under that temp. It works using a temp probe placed in the the rad core fins. With this setup, it still uses the ECT connection for the ECU but bypasses the ECU for the fan control. Good luck to anyone with this problem and i hope i helped solve someone else's issue.

Mark helpful

Your Answer:

Related Questions

  • Overheating due to fans not working 1 Answer

    Hi - I have replaced the water pump, thermo switch, checked the relays and fuses and replaced the fans with new oem replacement. I have had my head gasket replaced and there aren't any leaks and do...

    2000 Chevrolet Venture LS Extended

    -

    Maintenance & Repair

  • overheating and fans not coming on 14 Answers

    My 2003 Chevy Venture began overheating and I replaced the relays because fan wasn't coming on. Now it continues to over heat. I can feel a pulsing in the hoses and it takes a while to get hot so I ...

    2003 Chevrolet Venture

    -

    Maintenance & Repair

  • 03 Venture overheating 3 Answers

    Have changed the water pump, thermostat, and temperature sensor and bled the system very well. But for some reason, it keeps overheating. Not always, but maybe 50% of the time. I'm at a loss...

    2003 Chevrolet Venture LS

    -

    Maintenance & Repair

  • Overheating problem on a 2004 Chevy venture 5 Answers

    Driving home from Denver my venture started to overheat. I got off the highway and realized I was leaking a lot of coolant and one of my fans weren't working. I went to the nearest auto parts store...

    2004 Chevrolet Venture

    -

    Maintenance & Repair

  • Overheating 2002 Chevy Venture, 2 Answers

    Both fans coming on, just replaced thermostat but when we get to the approx 2-3 mile mark it starts to overheat. Could it be air or ECU? This is also a wheelchair accessible van.

    2002 Chevrolet Venture LS Extended

    -

    Maintenance & Repair

Shortcuts

Search Chevrolet Venture Questions

CarGurus Experts

  • #1
    CaptPKelly
    Reputation
    1,860
  • #2
    John Carson
    Reputation
    1,610
  • #3
    Reelin68
    Reputation
    1,280
View All

Find great deals from top-rated dealers

Search

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. Content will be removed if CarGurus becomes aware that it violates our policies.