Question about 1997 Cadillac Eldorado

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1997 Cadillac Eldorado has rough idlying and hesitation when accelerating with surges...also, loss of miles per gallon...I suspect faulty fuel pump regulator...any ideas???

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Replace your fuel pump but first fuel filter. Make sure you put 91 octane in car this is important. Run fuel injection cleaner through fuel, You can get some at local auto store. Have a computer check done. Kragen or Autozone does this for free. change regulator if necessary.

Posted on May 29, 2010

  • duncan1948 May 29, 2010

    failed to mention that after parking and turning off the engine, we smell gas. Does this still reflect fuel pump problem?


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Was geting 18 miles to the gallon now geting 14 it the fuel pump or the air felter. and it had a tune up.

A tune up can reduce mileage. If they set the timing perfectly, that could reduce power and waste gas. You get the most mileage and power if the ignition is advanced as much as possible, until you get a pre-ignition ping in hard 2nd gear acceleration. They you know you have to back off a bit.
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