|Originally posted by Hidalgo:|
The digital cruise control contains its own electronics, so it doesn't matter if your stock Fiero used the ECM as a brain or the separate cruise module underneath the carpet, because you won't be using either one of them anyway.
1. You can but old or digi cruise won't report problems. 87-88 ECM reports cruise in ECM data stream Including all switches. Switches in level, on brake pedal, etc, cause many cruise problems. Digi cruise still uses same switches.
2. ECM control is more accurate then old add-on cruise modules.
3. Vacuum servo on this setup only uses two valves and servo coil is ignored. (and dump valve when brake/clutch is on.) Most valve problem are dirt and easy to clean if/when that happens.
I'm still adding ECM control cruise to 87 DIS duke. Is not very hard to add it. About 1/3 of work is done at factory. Engine TBI's idle pulley came w/ cruise part.
In any case... Hard is to find correct throttle/cruise cable w/o major mod'ing cruise or throttle cables, etc. Later VIN R U and others have separate cables. When found, Need cruise cable and
idle pulley bracket
. Then VERY CAREFULLY mod throttle cable end to accept new cruise cable.
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
The Ogre's Fiero Cave (It's also at the top and bottom of every forum page...)