Inspect Fuel Cut

(a) Start and warm up the engine.

(b) Open the throttle valve and keep the engine speed at 3,000 rpm.

(c) Use a sound scope to check for injector operating sounds.

(d) Check that when the accelerator pedal is released, injector operating sounds stop momentarily (at 2,500 rpm) and then resume (at 1400 rpm). Standard


Specified condition

Fuel cut off rpm

2,500 rpm

Fuel return rpm

1,400 rpm

If the result is not specified, check the injectors, wiring and ECM.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

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