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1998 GMC K1500 Suburban SLE 5.7L Poor Acceleration
Posted to GM Driveability on 9/9/2008 14 Replies

suspecting fuel pump. ondemand says that fuel pressure should be above 60 psi constantly and napafix says it should be appx 60 psi with a 5-10 drop at idle what is correct? only has 51 psi at idle. also low amp probe test shows a pump spinning at 10,500 rpm bu...

14 Replies Received (View Replies)

  Related Documents & Media  1998 GMC K1500 Suburban SLE

 
Message Closed w/FIX

car Vehicle Data

1998 GMC K1500 Suburban SLE

VIN 3GKFK16R0W
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / CSI
EmissionsOBD-II Compliant
SymptomsPoor Acceleration
OccursOn Accel

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)
Message Closed w/FIX

car Vehicle Data

1998 GMC K1500 Suburban SLE

VIN 3GKFK16R0W
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / CSI
EmissionsOBD-II Compliant
SymptomsPoor Acceleration
OccursOn Accel

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)