HELP Please: Fuel Pump Problem, I think??
Thread Starter
Newbie
Joined: Mar 2006
Posts: 2
Likes: 0
HELP Please: Fuel Pump Problem, I think??
I have a 1997 300d. I got home from work one day, pulled in the driveway went to turn of the key and the car kept running. It ran all the way to redline and past for like 5 minutes with me standing outside the car with the key. Anyways the engine blew.
I replaced it with a 1996 engine. Everything is bolted up and now it wont start. I am thinking that it is not getting any fuel.
I cannot hear the pump running, so maybe it is a relay or a problem with the pump.
I checked it with AutoTap and no codes are being thrown.
Does anyone know where the Pump Relay is? Or Fuse? or What could be wrong? Or how to trouble shoot? Thanks
EMA
I replaced it with a 1996 engine. Everything is bolted up and now it wont start. I am thinking that it is not getting any fuel.
I cannot hear the pump running, so maybe it is a relay or a problem with the pump.
I checked it with AutoTap and no codes are being thrown.
Does anyone know where the Pump Relay is? Or Fuse? or What could be wrong? Or how to trouble shoot? Thanks
EMA
Almost a Member!
Joined: Dec 2005
Posts: 46
Likes: 0
From: Manchester, UK
W210 E300DT Saloon
The first problem was a runaway diesel, probably a faulty seal or piston ring letting fuel into the combustion chamber.
The easiest way to check if you have a faulty relay is to wire 12V directly to the fuel pump via an external power supply, and see if its working. If it works, then you can test the relay.
The easiest way to check if you have a faulty relay is to wire 12V directly to the fuel pump via an external power supply, and see if its working. If it works, then you can test the relay.
Super Member
Joined: Sep 2004
Posts: 551
Likes: 2
From: Virginia
2005 Carlsson CD32 E320 CDI Inline-6
No air in system?
Have you verified all air is out of the fuel system, including air bubbles that may have formed in the filter or lines?
BTW, how do you halt a runaway diesel before it blows? With a manual trans you could probably dump the clutch in 5th gear with the brakes on, but how about an auto trans?
BTW, how do you halt a runaway diesel before it blows? With a manual trans you could probably dump the clutch in 5th gear with the brakes on, but how about an auto trans?
