1989 Chevy Silverado

1989 CHEVROLET SILVERADO
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ROADSTER32
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  • 1 POST
Engine Performance problem
1989 Chevy Silverado V8 Two Wheel Drive Automatic

89 Silverado 5.7 liter
Engine starts and idles fine for about 5 seconds then the engine starts to lope and irratic idle. O2 sensor and throttle positioning sensor have been replaced.
Jan 1, 2010 at 12:34 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Have you checked for vacuum leaks? Also, has the check engine light come on? Fuel pressure?

Let me know.
Joe
Jan 3, 2010 at 6:55 AM
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