95 E320 Died While Driving
 

It is my turn to ask for help. My wife's 1995 E320 would not start when I took it out for an errand. I went home and picked up some tools to try to discover the problem. I read the engine computer (both with the button and socket #8 (HFM-SFI) and there were no codes to read. I pulled the intake tube and ignition cover to inspect the wires, everything looked normal. I bled some fuel from the fuel rail, some fuel escaped but it did not squirt. Checked the fuses, all were good (rotated them just for good measure). The engine started and I headed for home. Close to home, the car died cold, no coughing or stammering. The battery is strong and the starter works well.

My first guess would be a failed fuel pump. Anyone have any other ideas that could cause these symptoms? What test can I perform to help identify the difficulty?

Some days are just hard. I cannot locate the fuel pump relay. The car is a 1995 E320 wagon (124.092). Below is the "location" from the CD, K27 fig 11 is the fuel pump relay and it should be right in front of the overvoltage relay behind the battery but there is nothing there. Fig 12 is for a 124.034/036 whatever those cars are. Anyone know where the fuel pump relay is on my car?

Take the plastic cover in the corner (passenger side, rear of engine) off. The fuel pump relay (green) is behind the A/C compressor relay (black).

Zafar .... Thanks, your are correct and I finally found it on my own last night. I pulled the cover off of the fuel pump relay and it looked in good condition. I tested it on the bench and it tested OK. I cleaned up the contacts and replaced it. Nothing changed. This morning I went to my local dealership and talked to the Assistant Parts Manager (that I have worked with for many years). He loaned me an Overvoltage Relay and a Fuel Pump Relay and told me to bring back the one that I didn't need. That blew me over, as a part house has never loaned me parts before without even a deposit. Anyway, the Overvoltage Relay was the problem. After installing the new one, the engine started immediately.

Thanks to the previous posters who left the answers in previous postings.

Jim
Your chassis had an upgrade part for the OVP [ common problem]
The new part is 00 540 67 45, which you probably now have .
The old probmatic one was 000 540 52 45.
If that is what was in there , you should be all set now, but if the one you took out was already the newer one, you may want to check the fuse/s on top of the one you took out, as that would cause the OVP problem as well....
You prob already did such, but just in case.........

Arthur .... You are the man. The number I took out was 000 540 67 45 and I replaced it with the same number (what the dealership gave me).

Yes I checked the fuse and pulled apart the can to see what the problem was. The top relay coil was blue from heat and the circut board was dark next to it. If this repay lasts another ten years, I will be happy with it.

Once again, thanks to the knowledge of prior posts, accessed through several searches, a repair was made. This is an invaluable asset to us shade tree types.

Jim
Very Good..
We don't want Betty thinkin' ya' only know how to fix the ol' Sl's...

Always a pleasure...
Arthur