changing fan scheduling?

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Cadillac Powertrain Control Module (PCM) Tuning Discussion, changing fan scheduling? in Cadillac Engine Discussion; I bumped the timing up a few degrees on my '92 Eldo (4.9) for a little more torque and installed ...
  1. #1
    Tony_Hanna is offline Cadillac Owners Member
    Automobile(s): '92 Eldorado TC
    Join Date
    Oct 2007
    Charleston, WV

    changing fan scheduling?

    I bumped the timing up a few degrees on my '92 Eldo (4.9) for a little more torque and installed a 180 thermostat to help ward off preignition from the timing advance. As a result the stock fan scheduling is all wrong and the temps get higher than I'd like while idling. Is there any way to adjust the fan scheduling through the PCM or am I stuck with wiring in an aftermarket fan controller?

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  3. #2
    N0DIH's Avatar
    N0DIH is offline Cadillac Owners Master
    Automobile(s): 94 Fleetwood Brougham
    Join Date
    Aug 2004
    Rockford, IL

    Re: changing fan scheduling?

    Give Fastchips or Wester's a call. I know Lyndon can do some work on the 90-95 ECM's, but not sure of the details of it.

    Let him know I sent you (again, if that helps any!)


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