Guys, I put the car away in the fall after discovering a fan problem and never fixed it.
Ive now taken a few stabs at it and cant figure it out.
I have an 87 ECM with a TT chip and the Ramchargers dual fans. Car ran beautifully all summer for the past 4-5 yrs with that setup. Fan kicked on via the Caspers kit - at 160 deg. Never heated up - ever.
Now I cant find the issue. I replaced the switch that connects to the harness near the PS fender and MAP sensor. Still nothing. I checked the wires going to the connector - 12v power into the switch - no problem there.
The fan works fine - I tried running power to it and both fan motors spin.
It seems that when the car heats up - nothing activates the fan - running power to it from the switch to the fans to kick them on.
The connector has a few (4?) wires running to it.
One of the guys at work has a GN and seemed to think maybe something was wrong with the drivers in the ECM? Ive never heard of this problem.
Like I said - it was working fine then just quit.
Dont know where to turn next....change out coolant temp sensor on top of intake with yellow and blk wires???
Ive now taken a few stabs at it and cant figure it out.
I have an 87 ECM with a TT chip and the Ramchargers dual fans. Car ran beautifully all summer for the past 4-5 yrs with that setup. Fan kicked on via the Caspers kit - at 160 deg. Never heated up - ever.
Now I cant find the issue. I replaced the switch that connects to the harness near the PS fender and MAP sensor. Still nothing. I checked the wires going to the connector - 12v power into the switch - no problem there.
The fan works fine - I tried running power to it and both fan motors spin.
It seems that when the car heats up - nothing activates the fan - running power to it from the switch to the fans to kick them on.
The connector has a few (4?) wires running to it.
One of the guys at work has a GN and seemed to think maybe something was wrong with the drivers in the ECM? Ive never heard of this problem.
Like I said - it was working fine then just quit.
Dont know where to turn next....change out coolant temp sensor on top of intake with yellow and blk wires???