Fuel Relay

[dbb7697]

Hello All
Where is the fuel relay found on a 92? Is it under the rear passenger seat?
Thanks in advance.

 

[dreaming.haze]

@dbb7697 - Correct, it will be under the passenger rear seat.

94 E500 fuel pump relay location | Electrical, CAN and Wiring

Hello all, I seem to have an issue with my fuel pumps, the car cranks but does not start. I cannot hear the fuel pumps priming with ignition on so this seems to be related to my issue. From reading the issue could be the fuel pumps, fuel pump relay or the LH module. I wanted to start with the...

www.500eboard.co

 

[dbb7697]

Thank you.

 

[dbb7697]

Back again. I cannot see the relay with fuse under the rear seat. Here is what I am seeing. Can it be located anywhere else? The black box under the foam I moved and nothing under that either. Thanks in advance.

 

[gsxr]

I believe it's the blue cube relay in your photos. The relay in your car may not have the fuse, which is odd, but maybe some were built that way.

 

[dbb7697]

Thank you. That is what I was thinking. Only fuse down there. Here are some pics of all sides of the relay.

 

[sheward]

My 92-model car had the relay without a fuse. Others have it. FWIW... mine was intermittently bad.

 

[dbb7697]

Just tested and works in the test. Next is the fuel pump. Is there a special tool to take the shield off that covers the fuel pump?

 

[dbb7697]

Does anyone know the part number for the fuel pump? Cannot find it on mboemparts.com.

 

[gsxr]

Pump info at link below. Replace both if the are old/original. I got mine from Amazon for quick delivery:

Info on new Bosch fuel pumps for E500E | M119 Engine

Hello all, It looks like AutohausAZ.com has reduced the price on E500E (as well as C126) Bosch fuel pumps to around $92 apiece. This is about a $30 reduction from what I remember them being a couple of years ago -- if you are in the market for a pump (or want to grab a couple for that moment...

www.500eboard.co

If the high pressure hose exiting the filter is not recent OE... consider that too, it's a fire hazard & frequent leaker.

 

[dbb7697]

Thank you. If this does not fix it. The LH module next.

 

[gsxr]

You can jump the terminals at the relay and see if the pumps run or not.

 

[dbb7697]

Thank you. Any suggestions on where to get the hose?

 

[dbb7697]

I found the thread.

 

[gsxr]

Dealer only for the high-pressure hose. Read this thread, post #3 through #7:

FYI - Fuel Pump and Hose Replacement Info with part numbers (Was: Fuel leak while running) | Troubleshooting and Diagnostics

ADMIN EDIT: Post #8 has the part number for high-pressure hose exiting the fuel filter (most critical to replace if original or aftermarket) Post #18 has the part number for feed hose from fuel tank/strainer to fuel pump inlet. Post #22 has the part number for connecting hose between fuel...

www.500eboard.co

 

[dbb7697]

Yes sir. All set. Now just doing the work and hopefully fixes the issue. Thank you for the assistance.