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1989 GMC R2500 Suburban 7.4L Hesitation, Surge, Cuts out, Misfire
Posted to GM Driveability on 5/24/2002 13 Replies

WE have run all the test I can think of. This is a 79 truck with a 89 454 out of a suberban all the wiring has been changed with it. It has no power on accel. The vaccumm goes to nothing like it has pluged exhaust. We removed the exhaust but it still has the s...

13 Replies Received (View Replies)

  Related Documents & Media  1989 GMC R2500 Suburban

 
Message Closed w/FIX

car Vehicle Data

1989 GMC R2500 Suburban

VIN CKR3492118
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
SymptomsHesitation, Surge, Cuts Out, Misfire
OccursOn Accel

Trouble Codes

14o2 sensor lean
42EST Problem
Message Closed w/FIX

car Vehicle Data

1989 GMC R2500 Suburban

VIN CKR3492118
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
SymptomsHesitation, Surge, Cuts Out, Misfire
OccursOn Accel

Trouble Codes

14o2 sensor lean
42EST Problem