Misfiring on two cylinders

1989 CHEVROLET CHEYENNE
2,000,000 MILES • 5.0L • V8 • 2WD • MANUAL
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TROD38
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  • 1 POST
If I unplug the electronic spark control, is the engine suppose to die and could a bad ESC cause two cylinders to not fire and make the engine miss?
Aug 28, 2016 at 9:02 PM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
try pulling one plug wire at a time to try to find cylinders that are missing then check plug wire for resistance , spark plug and compression. also check for a vacuum leak under TBI unit. they blow gaskets there. Yes if you unplug ESC the engine will quit. it may be a distributor cap or low compression so check all this first.
Aug 29, 2016 at 6:55 AM
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