Question about 1988 Cadillac Eldorado

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Digital dash goes out and yellow light (engine control system) comes on. any help would greatly apprishated. rmcginnis@stny.rr.com

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You have the same problem I did. It is a Bad Central Power Supply which is located above your Gas Pedal. It is a silver box 4 in. by 6 in.. They are not made anymore so you have to go to a repair shop and they will find you one on thier computer. Or you may find one at a Junkyard. The new one will cost $300 the junkyard from $125 to $175. I would get the new one because its Plug and Play and Labor charge is Minimal.

Posted on Jul 10, 2010

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  • rick_martin Apr 20, 2011

    Had the same problem.. Found a Replacement box from Cardone.. After driving for 60 miles, same problem came back ??? Any help would be welcomed..

  •  CaddyShacker
    CaddyShacker Apr 20, 2011

    I take it Cardone is a Remanufacturur Co?If they wont replace it track a new one down like I did it has been 2 years and mine is fine.And let me tell you that Jumpstarting yours or someboby elses car is what blew mine.These boards are 23 yrs old and any surge in voltage or current can fry them.But I would have a mechanic check the power that is feeding that module first before you put the next one in and it comes right off the battery.A auto shop can track a new one down on thier computer because mine came from 1000 miles away there arent many left out there good luck.Get back to me if you need any more advice.

  • rick_martin Apr 25, 2011

    My main problem is the AC in summer wiill shut off and hot air will blow out of the defrosters.. In winter, same thing, except cold air will blow from the defrosters... Shut the car off, and all is back to normal ??? Have you heard of this.. 88 Eldorado..

    Thanks,

  •  CaddyShacker
    CaddyShacker Apr 25, 2011

    You are either low on refrigerent or there is a little plastic valve behind your glovebox that switches the hot and cold air flow.It may be broken the mechanic broke mine when he was fixing my power supply.

  • rick_martin Apr 25, 2011

    The AC is ICE COLD... I'll check the valve you mrntioned...

    Great Thanks,

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