Question about 1994 Cadillac Eldorado

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Fluctuating Idel @ regular RPM's ......I NEED HELP

I have a 1994 Cadillac Eldorado and every time i start it the car has rough Idle and the Idle fluctuate's from normal idle, then jumps between 500 RPM's to 1200 RPM's and sometime's to 1900 RPM's. I also can feel it in the gas pedal when the car is doing this. I tried replacing the throttle body sensor but it still does it. I also was told it was the Idle error sensor. So instead of spending the unnecessary money again I thought I would go online and see if anyone could help me with this problem.

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  • geoffweber Oct 16, 2008

    yeah for the first 5-10 minutes the rpm fluctuates on my 94 eldorado
    at higher speeds and after 10 minutes it stops shaking

    dont know why


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Sounds like the iac motor or the idle air control

Posted on Nov 11, 2008

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Same prob i replaced air idle control and cleaned out intake valve or altenator is not giving right volts and fuel pump on start up isnt giving right amount of gas cadillacs need fuel pump to be correct or whole engine will not run right

Posted on Dec 26, 2008

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