All Deliveries to the United States and Canada will be made by UPS. You will be quoted the shipping cost and presented with delivery options at the time of checkout.
Contact us for delivery outside the United States or Canada.
Stepper Motor for all DS4 Injection Pumps 94+, all model vehicles.
The Stepper Motor is what controls injection timing based on what the computer (ECM) is set to, and telling it to do. It is external to the pump, and can be easily changed without removing the pump from the truck.
The stepper motor is at fault if you are tripping codes 34 or P0216.
If you are tripping this code and the injection pump was just replaced with a new or reman, then it was not locked down in the proper location and the stepper motor is out of range where it can correct timing. In that case please read our FAQ section for details.
