Fast Idle - Page 2
 

Fast Idle

Started by Jcparmley, August 02, 2019, 01:42:55 PM

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Jcparmley

I do have a fast idle switch on the dash.  I have not checked the relay.  That might be something I need to check.

Quote from: thomasinnv on August 05, 2019, 07:28:56 PM
Jared do you have a fast idle switch on the dash next to or below the engine run and start switch? If so then you will not have fast idle controls through the cruise switches unless someone changed it at some point in time.  You will have a fast idle relay in the front junction box and a fast idle relay in the rear junction box. The front relay is affected by the fast idle switch and the parking brake as well as the neutral switch from the transmission. The rear relay switches in a resistor into the throttle circuit. There were 2 different resistors used depending on the desired fast idle speed. This is all from memory so may not be 100% accurate but the general idea is there.
1989 MCI 102c3 6v92TA Mechanical