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#1
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SSS or...?? M103
Hey Guys,
First of all I would like to state that I have just spent a day & a half in the archives reading up on SSS and, while my brain is addled with information, I don't feel like I have any solid leads based on my rather unique circumstances. (Car is my 1991 300E, M103, 165k mi, very well maintained.) The circumstance: The stall is very specific & very repeatable. I have to be going 30-35mph or better (say, @ least in 3rd gear). I then have to brake fairly hard all the way to a stop; If I brake fairly slowly to a stop, no stall. If I brake hard to a stop under 30mph, no stall. I did get it to stall once by braking hard to almost a stop (5-10mph?) at a yield and found myself stalled & drifting into oncoming traffic. (I literally made that face). It also does start immediately every-single-time after a stall and take off again fine. Based on what I've been reading, it sounds like the car is having a problem going from 'drive' into 'idle' mode. (Please confirm or argue this point ). Otherwise she idles fine, runs great, and is the phenomenal German auto she's always been. The OVP was replaced a few years ago (stalling issue that turned out to be the Voltage Reg) & the EHA was replaced a few months ago (old one was leaking). All other filters/tune-up parts have been replaced in the past few years as well. Based on my specific circustances what's my best bet for first attack? ICV? Vac Leak? Crank position sensor? Sell for parts & put all the money into my SL? Thanks!
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Currently: 1972 350SL Euro 4spd 1973 BMW R75/5 1981 BMW R80GS 1995 FZJ80 with OM606 Conversion In Progress |
#2
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Highly likely that its the Crank Position Sensor. Does the car throw any codes?
I'd replace the sensor and see what happens. My 300E was doing the same thing, sensor replacement solved it completely.
__________________
-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
#3
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I haven't checked for codes. I didn't think I could on an MB... I haven't checked a code since my POS GMC van in the mid-90's...
Can it be done w/o some ridiculously expensive Bosch tester?
__________________
Currently: 1972 350SL Euro 4spd 1973 BMW R75/5 1981 BMW R80GS 1995 FZJ80 with OM606 Conversion In Progress |
#4
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Check the plug/connector by the battery, some of them have a LED and button to check codes.
__________________
-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
#5
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Quote:
And in the meantime, sans codes: Any opinions out there as to the probably culprit?
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Currently: 1972 350SL Euro 4spd 1973 BMW R75/5 1981 BMW R80GS 1995 FZJ80 with OM606 Conversion In Progress |
#6
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Quote:
(After a little more reading, I assume it's the rear, as the front doesn't do much...)
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Currently: 1972 350SL Euro 4spd 1973 BMW R75/5 1981 BMW R80GS 1995 FZJ80 with OM606 Conversion In Progress Last edited by 350SL4spd; 05-21-2009 at 11:01 AM. |
#7
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Hey 350,
Pardon my ignoramusness but....what is SSS? Acky |
#8
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Quote:
SSS: Sudden Stalling Syndrome.
__________________
2016 Monsoon Gray Audi Allroad - 21k 2008 Black Mercedes E350 4Matic Sport - 131k 2014 Jeep Wranger Unlimited Sahara - 62k 2003 Gray Mercedes ML350 - 122k |
#9
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Quote:
And I should have listed the definition of SSS at the beginning for anyone who hasn't had a W124 long enough to experience it yet.
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Currently: 1972 350SL Euro 4spd 1973 BMW R75/5 1981 BMW R80GS 1995 FZJ80 with OM606 Conversion In Progress |
#10
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Some interesting test results so far. I'm getting some weird results from my Throttle Valve Switch. We'll call it a 'Person of Interest' at this point as opposed to a 'Suspect' for the time being, but I'd appreciate any helpful input:
http://www.peachparts.com/shopforum/showthread.php?t=253745
__________________
Currently: 1972 350SL Euro 4spd 1973 BMW R75/5 1981 BMW R80GS 1995 FZJ80 with OM606 Conversion In Progress |
#11
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i think its the small speed sensor fitted on the back of the speedo, it sends the speed from the speedo to the ECU. it enables the ECU to know when to switch from the over run mode into idle mode. to check it, unplug ur injection ecu behind the bat. drive the car, if the stall goes then its most probably the speed sensor. should set u back abt 50usd to buy it, u can change it at home. the new part is better built as a fix for this issue.
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Jay, ----------------- -1995 Blue W202 C36 AMG (M) SOLD ;( -1995 Black W140 S500 (Lady) -1992 Black W124 E300 (Dima) (Ex-Mosselman Twin turbo Kit). -1988 Black W124 300 E 4-Matic.(Nadeen) -1983 Brown W126 500SEL.(Old Lady)(Sold) -1981 Gold W123 280CE.(Dareen)(Sold) http://www.youtube.com/user/jayrasheed |
#12
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Just wanted to post a quick follow up here:
I originally replaced the TDC sensor and the problem lessened a bit, but I was still stalling occasionally. Later, I started noticing that I was having trouble with my idle dropping with the A/C on at intersections. After some thinking & some digging I started to see that a faulty ICV valve could be causing both of these issues. I didn't muck about with cleaning the ICV & just replaced it (not too expensive from Phil). All better! No more stalling. No idle dip at intersections w/ A/C on. I know everyone's SSS seems to have a different source, but I wanted to follow up with my experience on this particular M103. (It's actually my belief that all SSS problems are caused by multiple aging parts/sensors in the M103's complicated idle control systems.)
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Currently: 1972 350SL Euro 4spd 1973 BMW R75/5 1981 BMW R80GS 1995 FZJ80 with OM606 Conversion In Progress Last edited by 350SL4spd; 04-25-2010 at 04:31 PM. |
#13
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My M103 had bad sensors and ran like crap until I replaced them. It has been perfect ever since. My idle control valve was stuck too, but I found a good used one, cleaned it, and it has also been fine ever since.
__________________
-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
#14
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Quote:
Regards, Eric
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89 300E "Benzer1" 15.924 Uncorrected 93 400E "Benzer3" 14.200 U.C. 95 E420 "Benzer4" 92 300E "Benzer5" 16.299 U.C. Future turbo CNG 87 300D "Benzer7" 87 300D "Benzer8" 87 300D "Benzer9" 87 300D/70 AMC Javelin "Sidewinder-Benzer" 87 300TD "Benzer11" 06 E320 CDI "Benzer12" 05 E320 CDI "Benzer12A" 71 AMC Javelin AMX 401 "Sidewinder" 74 AMC Hornet 401 "C.K.10" 13.63 U.C. 74 Bricklin SV1 "Presto" AMC 360 pwrd. |
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