Hi, I'm still having an issue with adjustable control for my 87 TPI GTA secondary fan circuit. The primary is fine since I had an 89 Corvette PROM programmed to start the fan at 187 degrees. It's workng fine.
I purchased a Derale switch to actuate the secondary fan system at a lower temperature. The Pontiac dealer technician could not get the fan to actuate on and off. It basically stayed running constantly and the technician said it appeared the Derale electronic module was shorted. I'm aware that there is a temperature activated sensor on the right side of the block which activates the secondary fan at an absurdly high temperature.
My question is this, what adjustable switch is the best one for controlling the secondary fan system (single only) and does the current temperature sensor have to be replaced with a lower temp one to ensure that the secondary fan can be controlled with an adjustable temperature wiring circuit?
Muchas Gracias,
Laser