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1993 Chevrolet K3500 Silverado 7.4L Surge
Posted to GM Driveability on 5/7/1999

Engine surges steadily when in closed loop and steady RPM above idle. Watching injector spray pattern with the timing light you can see fuel flow increasing and decreasing, more on one injector that the other. It seems that when you switch wires for inject...

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Message Closed w/FIX

car Vehicle Data

1993 Chevrolet K3500 Silverado

VIN 1GBJK34N3P
Engine7.4 L / 8 cyl / GAS
Trans5-speed Standard
DeliveryFI / TBI
EmissionsUS FED
SymptomsSurge
OccursHot, Cruise
Misc.Cab & Chassis

Trouble Codes

24vss tested sensor ok.
Message Closed w/FIX

car Vehicle Data

1993 Chevrolet K3500 Silverado

VIN 1GBJK34N3P
Engine7.4 L / 8 cyl / GAS
Trans5-speed Standard
DeliveryFI / TBI
EmissionsUS FED
SymptomsSurge
OccursHot, Cruise
Misc.Cab & Chassis

Trouble Codes

24vss tested sensor ok.