1993 Saturn SL2 Hesitation

Tiny
PHATTHAWG
  • MEMBER
  • 1993 SATURN SL2
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 67,000 MILES
My 93 Saturn SL2 hesitates under light acceleration and surges a bit when giving it just enought throttle to maintain a steady speed. I replaced the temp sensor, plugs, wires, cleaned the coil tips where the wires go on, and took the egr off to clean it. I still have the same problem. It run quite well otherwise, starts easy & idles fairly smooth. Any suggestions?
Wednesday, March 24th, 2010 AT 5:32 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Inspect and test all the following listed below and get back with some results

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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Wednesday, March 24th, 2010 AT 5:40 PM

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