Infuriating 124 problem
Thread Starter
Newbie
Joined: Oct 2008
Posts: 14
Likes: 0
1989 w124 200e
Infuriating 124 problem
hi folks,
recently GEDagget has posted about a prob with his merc, and i have followed it with interest cos i have exactly the same problem with mine. Which is that for no apparent reason and with no warning my car just cuts out, dead, one minute running fine the next dead nothing. I noticed that at the same time as she cut out i could not hear the fuel pump running, which is quite noisy and easily audible. Anyway after a while of just sitting there and flicking the ignition key eventually the pump can be heard running and off i go until the next time.
researching the problem on this forum and elsewhere i came to the conclusion, after cleaning the fuel pump relay contacts and still having no luck, that i should replace said relay. You know where i am going with this, still she cuts out randomly, so i am at a complete loss. can anyone point as to where else to start looking.
thanks in anticipation.
chris.
ps : she is an 89 200e
recently GEDagget has posted about a prob with his merc, and i have followed it with interest cos i have exactly the same problem with mine. Which is that for no apparent reason and with no warning my car just cuts out, dead, one minute running fine the next dead nothing. I noticed that at the same time as she cut out i could not hear the fuel pump running, which is quite noisy and easily audible. Anyway after a while of just sitting there and flicking the ignition key eventually the pump can be heard running and off i go until the next time.
researching the problem on this forum and elsewhere i came to the conclusion, after cleaning the fuel pump relay contacts and still having no luck, that i should replace said relay. You know where i am going with this, still she cuts out randomly, so i am at a complete loss. can anyone point as to where else to start looking.
thanks in anticipation.
chris.
ps : she is an 89 200e
Senior Member
Joined: Jul 2004
Posts: 462
Likes: 3
From: Boulder, CO
86 W124
I've seen a faulty temperature sensor send the wrong signal to the ecu and cause said problems. Test the resistance specs, if its not within range, the signal it sends is the same as if the engine was way overheated and the automatic safety cutoffs are set into motion.
Junior Member
Joined: Jun 2003
Posts: 42
Likes: 2
From: Surfers Paradise
Many Mercedes, Mini Coopers, Mokes
I Had a similar problem many years ago, after LOTS of tech visits and part changes, the altitude sensor was the culprit. It thought it was in the mountains or when it wasn't - caused many dramas.
Newbie
Joined: Apr 2011
Posts: 1
Likes: 0
1987 300E I6 3.0
Problem
Had the exact same problem last summer with my 87 300E, turned out it was a fried rotor and distributor cap. Check that out before any other costly repairs are made. Once I replaced mine it ran like a gem again.
