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  #1  
Old 03-22-2016, 01:20 PM
85 DSEL's Avatar
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Intermittent stalling 260E

My son drives the 260E and twice in the past two weeks he has experienced it stall for now apparent reason. No lights, plenty fuel in tank, etc. Could this possibly be fuel pump related? Where should I start with troubleshooting this issue (beside this post, of course!).

Thanks for your replies
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1995 W124 Wagon

Dale

1995 E320 Wagon 173K
1988 260e Sedan 120K
2006 BMW 330Ci 110K
-----------------------------
[LEFT]2007 F-150 XLT 175K
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  #2  
Old 03-22-2016, 04:30 PM
optimusprime's Avatar
Trevor Hadlington
 
Join Date: May 2014
Location: Worcestershire in England
Posts: 930
May be the tachometer fault . If it as a short it will stop the pump so the car will stall .Re start and run again just to repeat again. Remove connection on the rear of tachometer and if it runs ok replace the tacho. But i would do all the usual things first . This is a last resort . Check all fuses .Put a little grease on the tip of every fuse and remove it after.Check also all earth points ,remove them, clean up conntact points on the body grease them also then refit. Let us know how you get on .
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  #3  
Old 03-22-2016, 09:34 PM
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Quote:
Originally Posted by optimusprime View Post
May be the tachometer fault . If it as a short it will stop the pump so the car will stall .Re start and run again just to repeat again. Remove connection on the rear of tachometer and if it runs ok replace the tacho. But i would do all the usual things first . This is a last resort . Check all fuses .Put a little grease on the tip of every fuse and remove it after.Check also all earth points ,remove them, clean up conntact points on the body grease them also then refit. Let us know how you get on .
I'll try to look into these ideas when I get the time! Thanks for your reply
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1995 W124 Wagon

Dale

1995 E320 Wagon 173K
1988 260e Sedan 120K
2006 BMW 330Ci 110K
-----------------------------
[LEFT]2007 F-150 XLT 175K
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  #4  
Old 03-23-2016, 11:49 AM
ILUVMILS's Avatar
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Location: New Jersey, U.S.A.
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Take a look inside the distributor cap........
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MB Master Guild Tehnician 2007
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and Germany
27 years and counting!

1994 E320 (wrecked)
2001 E320
2005 C240 4Matic Wagon
2000 E320
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  #5  
Old 03-23-2016, 02:40 PM
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Did it stall when driving or when sitting idling?
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  #6  
Old 03-23-2016, 07:21 PM
85 DSEL's Avatar
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Quote:
Originally Posted by Rick76 View Post
Did it stall when driving or when sitting idling?

He said he was slowing down to make a turn when it died...


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1995 W124 Wagon

Dale

1995 E320 Wagon 173K
1988 260e Sedan 120K
2006 BMW 330Ci 110K
-----------------------------
[LEFT]2007 F-150 XLT 175K
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  #7  
Old 03-23-2016, 07:22 PM
85 DSEL's Avatar
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Quote:
Originally Posted by ILUVMILS View Post
Take a look inside the distributor cap........

Looking for...? Perhaps a loose wire?


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1995 W124 Wagon

Dale

1995 E320 Wagon 173K
1988 260e Sedan 120K
2006 BMW 330Ci 110K
-----------------------------
[LEFT]2007 F-150 XLT 175K
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  #8  
Old 03-24-2016, 10:28 AM
remotemark's Avatar
Geplatzt
 
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Take a quick look at the OVP and see if one of the fuses is blown.
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1994 E500 199/Gray 82k
84 300D (Salty) Orient Red/Palomino 141k
88 300CE (Ersatzhammer) 904/Java 163k -- Turbo Technics twin turbo kit, AMG Gen I body kit, Sportline steering box and steering wheel, Sportline/Eibach /Bilstein Sport/500E suspension, Quaife LSD in 210 mm diff case, Silver Arrow brakes.
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  #9  
Old 03-24-2016, 11:57 AM
ILUVMILS's Avatar
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Quote:
Originally Posted by 85 DSEL View Post
Looking for...? Perhaps a loose wire?


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Look for burnt contacts, corrosion, signs of arcing........
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ILUVMILS
MB Shop Foreman
MB Master Technician
MB Master Guild Tehnician 2007
Factory trained in NJ, PA, AL, CA, FLA,
and Germany
27 years and counting!

1994 E320 (wrecked)
2001 E320
2005 C240 4Matic Wagon
2000 E320
2000 ML320
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  #10  
Old 03-24-2016, 09:57 PM
85 DSEL's Avatar
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Quote:
Originally Posted by remotemark View Post
Take a quick look at the OVP and see if one of the fuses is blown.

How many are there? I have pulled the small 10A fuse from the top of the OVP located behind the battery area. It was not burnt or broken.


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1995 W124 Wagon

Dale

1995 E320 Wagon 173K
1988 260e Sedan 120K
2006 BMW 330Ci 110K
-----------------------------
[LEFT]2007 F-150 XLT 175K
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  #11  
Old 03-25-2016, 09:12 AM
remotemark's Avatar
Geplatzt
 
Join Date: Aug 2007
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Early ones had one fuse, later ones had two, interchangeable. Stalling at low idle or fluctuating idle rpms have indicated bad ovps for me on both of my M103 cars. If you can get hold of a known good one to try, it might worth the trouble. Also, and this is beyond my ken, sometimes the circuit on the board inside the relay gets broken and can be resoldered. you might find more information on that by searching the forum.
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I never go far without a little Big Star

1994 E500 199/Gray 82k
84 300D (Salty) Orient Red/Palomino 141k
88 300CE (Ersatzhammer) 904/Java 163k -- Turbo Technics twin turbo kit, AMG Gen I body kit, Sportline steering box and steering wheel, Sportline/Eibach /Bilstein Sport/500E suspension, Quaife LSD in 210 mm diff case, Silver Arrow brakes.
88 300CE Brabus 3.6 199 on Black 44k
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  #12  
Old 03-25-2016, 11:04 AM
85 DSEL's Avatar
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Intermittent stalling 260E

Quote:
Originally Posted by remotemark View Post
Early ones had one fuse, later ones had two, interchangeable. Stalling at low idle or fluctuating idle rpms have indicated bad ovps for me on both of my M103 cars. If you can get hold of a known good one to try, it might worth the trouble. Also, and this is beyond my ken, sometimes the circuit on the board inside the relay gets broken and can be resoldered. you might find more information on that by searching the forum.

The OVP is sure tucked back under the the battery compartment! Not easy to get to. Does it simply lift out of socket our is there some other step to getting out? Thanks for your suggestion.


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1995 W124 Wagon

Dale

1995 E320 Wagon 173K
1988 260e Sedan 120K
2006 BMW 330Ci 110K
-----------------------------
[LEFT]2007 F-150 XLT 175K

Last edited by 85 DSEL; 03-28-2016 at 04:54 PM.
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  #13  
Old 04-02-2016, 06:21 AM
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While changing oil on it last Saturday, I happened to notice that a pair of bent-nose long handle pliers that I must have laid upon the air cleaner when checking the OVP several days earlier had slid forward and become somewhat wedged in a position such that the bent-nose portion was stuck near the distributor/ignition parts at front of the valve cover! Top of pliers had a blue-ish, burned look as if it had shorted on electrical part. On up the handle, there is evidence that the serpentine belt had been rubbing as well.

Whew! Sure dodged a MUCH BIGGER problem had they fallen on down and tangled with the fan our somehow got between the belt and one of the pullys.


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__________________
1995 W124 Wagon

Dale

1995 E320 Wagon 173K
1988 260e Sedan 120K
2006 BMW 330Ci 110K
-----------------------------
[LEFT]2007 F-150 XLT 175K
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  #14  
Old 04-04-2016, 04:04 AM
BenzEnthusiast's Avatar
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Join Date: Dec 2011
Location: Manteca, CA
Posts: 194
The OVP relay and fuel pump relay are probably the cause of your problems. Both can be disassembled and repaired. There are usually a few broken solder joints that just need to be re-soldered. I usually re-solder all of the joints just to be sure that they are all good.

The relays can be a bit tricky to get apart, but you just need to be patient and use a few small flat blade screwdrivers to get the covers off of the relay's circuit board.
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1992 300D 2.5 TURBO

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  #15  
Old 04-04-2016, 04:31 AM
Stretch's Avatar
Gettin' outa chokey
 
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Location: Between a rock and a hard place (Back in Holland at the moment)
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Try the following

1) Disconnect the negative battery terminal for about 10 minutes and reconnect (by doing this you are clearing all error codes in the ECU)

2) Drive the car and see if the fault reappears (doesn't really matter if it does or not)

3) With OUT turning the ignition off measure the Duty cycle between pins #2 and #3 on the x11 diagnostic socket. If this is giving a continuous error code report back

Could be the road speed signal transducer (Could be other stuff - the point is to measure the error codes in the form of Duty cycle)
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