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1998 Oldsmobile Silhouette My van feels like it's running o

Tiny
ERICDELA
  • MEMBER
  • 1998 OLDSMOBILE SILHOUETTE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 179,000 MILES
My van feels like its running out of gas very inconsistently. Whether accelerating or cruising it jst hesitates (loses power then comes back, loses power then comes back). It will do this at 60 mph cruising or at 20 mph under acceleration. Also it does this with no pattern, it could go 2 days without it, and another day it might do it several times. Cold or hot makes no difference. It does not feel like a transmission problem and the check engine light is not on. Where do I start troubleshooting this problem?
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Sunday, July 4th, 2010 AT 3:06 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Possibilities: Inspect and test all the following listed below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft 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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Sunday, July 4th, 2010 AT 3:55 PM

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