PeachParts Mercedes-Benz Forum - View Single Post

DieselGuy53 · #3 09-01-2013, 07:28 PM

Quote:

Originally Posted by sixto

How does it idle if you disconnect EDS, or at least the ELR actuator at the tail end of the IP? You might have to help it idle by leaning on the throttle linkage so it can sustain idle. What I'm interested in is whether it idles smoothly without EDS. My guess at this time is a bad ring gear sensor or bad wiring between the ring gear sensor and EDS.

Sixto
87 300D

Thanks Sixto! The only brave one to the rescue, while others don't even bother to offer a hint...

I decided to take an adventure searching for the problem.

Disconnect EDS - no problem. Engine keep running and shaking.
Replace with spare EDS. Same...
Plug brand new OVP. Same issue Hmmmmm....
Disconnect the connector to the red thing on the head of the IP. No change..
Jerked the wiring harness (male and female) that leads to the head of IP, noticed a reaction. Tried again and found that on the female connector, there are two wires (brown and white) soldered to each pin. The white wire broke off from the pin. (Very hard to notice).

Borrowed a solder gun from a friend and soldered the wire to the pin.

Problem solved. Happy camper...

Lesson learned:

The harness insulator can become brittle a crack due to hot temp in the engine bay. Engine vibration can break the pin connectors over time.

Thanks....