1996 Chevy Astro Timing

1996 CHEVROLET ASTRO
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NINI84
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1996 Chevy Astro 6 cyl Two Wheel Drive Automatic

96 Astro Van has a mulitple misfires. A complete full service has been completed (tune-up), also the fuel pump and cadiconverter has also been changed. Do you think for any reason if it can be any electrical problems?
Aug 23, 2010 at 2:53 AM
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RASMATAZ
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Engine running rough or misfiring can be cause by the following:

1.Defective spark plug
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.False air leakage.
5.Faulty fuel injectors.
6.Insufficient fuel pressure.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
10.Throttle position sensor.
11.Idle air control valve.
Aug 23, 2010 at 3:09 AM