Engine - Surge On Deceleration

Number: 84-165

Section: 6C (VIm)

Date: July, 1984

Subject: SURGE ON DECELERATION


Model and Year: 1982-84 S-10 WITH 1.9L
ISUZU ENGINES

TO: ALL CHEVROLET DEALERS

Accelerator Plate, Accelerator Rod:

Some 1982-84 S-10 vehicles equipped with the 1.9L Isuzu (LR1) engine may experience a surging condition while being operated at highway speeds in the deceleration (coast down) mode. This condition may be caused by misadjustment of the primary fuel cut off switch located inside the passenger compartment on the accelerator pedal support bracket. The accelerator pedal switch can be readjusted by bending the TAB portion of the switch toward the cowl so that the switch does not close until the accelerator pedal is in the full up or closed throttle position.