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1999 Cadillac EL Dorado engine hesitation

Tiny
DBRSHOGAN
  • MEMBER
  • 1999 CADILLAC ELDORADO
  • V8
  • FWD
  • AUTOMATIC
  • 103,000 MILES
The engine hesitates and sputters at low speed acceleration. The fuel gauge also acts funny (Goes up and down over an hour or so driving. I believe it's the fuel pump/sending unit in the gas tank, but don't know for sure.

Any suggestions?
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Tuesday, April 6th, 2010 AT 1:54 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi dbrshogan, Welcome to 2carpros and TY for the donation.

Your probable causes here could be one of the following below.

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard.
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Tuesday, April 6th, 2010 AT 2:01 PM

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