The Top Mitsubishi Galant VR-4 Resource

Join the best E39A 1991-1992 Mitsubishi Galant VR-4 community and document your GVR4 journey.

  • Software Upgraded - Reset Your Password to Login
    In order to log in after the forum software change, you need to reset your password. If you don't have access to the email address you used to register your account, you won't be able to reset your password. In that case, follow the instructions here to regain access to the forum.

Fans not kicking on


Well-known member
Feb 26, 2009
Rapid City, SD
I only have my AC fan PO took the other one out. Worked yesterday, but today i got my data logger in and it said that I was -59c at full running temp so I tried to rewire the sensor on the top of the thermo housing. Messed it up really bad, so replaced it with a spare ECU coolant temp sensor and some spades. Will this work? I also have a broken wire on the relay box on the drivers side head light area. When I touch that wire to the other wires in the relay it spins the fan backwards. Any help on what I should do?

I do not believe the ecu cts will work as the internal resistance between the two sensors varies. Plus the sensor in the thermostat housing acts as a switch so to speak were once a certain resistance is reached it sends signal to kick on the fan. Were as the ecu sensor only sends info back to the ecu...I would obtain the correct sensor and the passenger side fan.
Support Vendors who Support the GVR-4 Community
Boosted Fabrication ECM Tuning ExtremePSI Fuel Injector Clinic Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications RixRacing RockAuto RTM Racing STM Tuned