Where is the DME in 944?
If your Porsche 944 will not start or suddenly dies on you, one of the first places you should check is the DME relay. On the older 944s, the relay is known as the fuel pump relay and is located on the fuse panel under the dash on the driver side.
What is a DME on a Porsche?
Digital Motor Electronics (DME) is a microprocessor based system that controls the ignition, fuel injection, oxygen sensor, and numerous ancillary functions of an automobile. DME can fine-tune the engine hundreds of times a second to provide maximum performance and efficiency.
Where is the DME relay on a Porsche 911?
On the 84 to 89 911s, the DME relay is located under the left front seat directly adjacent to the DME box. On the 90 and up 911s, it is mounted in the fuse box. Contained within the relay are actually two relays which operate in sequence of the other.
Where is the fuel pump located on a 1986 Porsche 944?
The fuel pump is located under the vehicle near the tank on the right side. When replacing, work in a well-ventilated area.
What does DME stand for?
Durable medical equipment (DME) coverage. Medicare Part B (Medical Insurance) covers. medically necessary.
How does a DME relay work?
When you switch on the ignition the ECU sends a current to the DME relay which then switches on the ECU ready to control the engine. Then when the the starter motor is cranked, the ECU activates the second relay in the DME relay and power is supplied to the fuel pump for as long as the engine is running.
What is a DME sensor?
The DME sensors detect all elements and factors affecting the engine’s operation. The captured data is then evaluated and translated into commands for the ignition and fuel injection systems.
What is a DME Porsche Cayenne?
The Motronic system (also called the digital motor electronics, or DME) is the heart and soul of your vehicle’s engine. The DME is programmed by the factory with “maps” of certain performance parameters, mostly conservative, so the engine will react well under a host of varying conditions.