1997 Chevy S-10 occasional rough engine

1997 CHEVROLET S-10
165,000 MILES • 4 CYL • 2WD • MANUAL
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CLUEFREE
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  • 1 POST
My 97 S-10 acts like it's starved for gas. Misses and idles rough. Has only happened twice in 1500 miles. It evens out a bit at higher RPMs. Truck starts better on 2nd try than first most times, unless it's just been driven.
May 5, 2010 at 1:32 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Hi Cluefree, Welcome to 2carpros and TY for the donation

Check the fuel pressure if its within specs if okay check and test the following 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.
May 5, 2010 at 5:48 PM
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