Fat goober
New Member
- Joined
- May 14, 2020
- Messages
- 16
- Reaction score
- 4
- Points
- 3
- Age
- 50
- Location
- Adelaide
- Members Ride
- Whll caprice
Does that work for both 6 and 8 engines as im not sure if my fans are working, my car doesn't seem to be getting excessively hot, though I can usually tell when they turn on/off but on a drive yesterday I couldn't. ThanksOnly low fan comes on with a/c, not high fan which comes on when dangerous high temp is reached and both are on if a/c is also on. Also low fan is bcm controlled and high fan is ecu/pcm temperature controlled from cts.
Try switching the relays around in bay for fan and taking 1 off at a time and or wire bridging relay sockets between the 2 to test operation.
If you disconnect tps and turn engine on you will get an engine light on dash and low fan will come on in a few secs followed shortly by high fan to see if both fans work.
Changing cts idling you will not see any fans on as you need high temps after driving.
As to your fuel usage perhaps check/test/renew 0xygen sensor as that can make ecu change idle/power/fuel usage