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International Automotive Technicians Network
1998 GMC K1500 Sierra SL 5.7L Poor Idle Quality
Posted to GM Driveability on 8/29/2012 9 Replies

This vehicle originally was towed in as a cranking no-start. Tests showed spark from ignition coil was present, but very weak. Scope test of coil primary circuit indicated good waveform with 7 amps draw and normal rise. Replaced the coil, cap, and rotor togeth...

9 Replies Received (View Replies)

  Related Documents & Media  1998 GMC K1500 Sierra SL

 
Message Closed w/FIX

car Vehicle Data

1998 GMC K1500 Sierra SL

VIN 2GTEK19R8W
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / CFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursHot, Idle
Message Closed w/FIX

car Vehicle Data

1998 GMC K1500 Sierra SL

VIN 2GTEK19R8W
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / CFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursHot, Idle