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#1
07-01-2009, 04:29 PM
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603's dying at idle
i have two 603's at the shop right now that start hard and die every time the revs go down when the car stops at a light , then starts right up again....
cars have been serviced and have all new filters ... fuel pump maybe ?
__________________
http://www.youtube.com/watch?v=d-Z8X_r_l_M 79 300d "baby blue nose" (sold) 87 e300d (om603) "billy" (sold) 94 e300d (om606) "mcrae" (sold) 84 300td (om617) "mom" 82 300cd (om617) "whitey" 84 300sd (om617) "benzo valdez" 87 300sdl (om603) "chip" 90 e300d (om 602) "bev" 69 280c (om603 swap) "rommel" 74 internationl scout II (om617) "scout" 64 impala (4bt) "homie" 57 chevy apache (7.3 psd) "goldie" 
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#2
07-01-2009, 05:27 PM
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Is the ELR working? Unplug it with the car idling and see if the speed changes.
-Jason
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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket  Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E.
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#3
07-01-2009, 05:32 PM
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I swapped OVP's with one I had as a spare (turned out it did not work) without the OVP powering the idle control, the engine would run way below 500RPM (no tach so I am guessing) and wanted to stall. In fact it did stall before I swapped OVPs again.
I would check the idle controls as mentioned above and the OVP relay.
__________________
"I have no convictions ... I blow with the wind, and the prevailing wind happens to be from Vichy" Current Monika '74 450 SL BrownHilda '79 280SL FoxyCleopatra '99 Chevy Suburban Scarlett 2014 Jeep Cherokee Krystal 2004 Volvo S60 Gone '74 Jeep CJ5 '97 Jeep ZJ Laredo Rudolf ‘86 300SDL Bruno '81 300SD Fritzi '84 BMW '92 Subaru '96 Impala SS '71 Buick GS conv '67 GTO conv '63 Corvair conv '57 Nomad 
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#4
07-01-2009, 07:46 PM
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Mine is doing the same thing. Exactly. My tentative theory is that somehow it's temperature related, because this only happens to me on hot days after hot drives on hot roads. 90 degrees plus, generally. Are yours similar conditions when they fail in this way?
__________________
 ~Michael S.~ Past cars: 1986 300SDL 1987 300SDL 1982 240D 1982 300SD Current: 1987 300SDL
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#5
07-01-2009, 10:40 PM
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I've got a new theory on this.
I recently replaced the line from the pump to the secondary. When running, it's very clear that there is a bunch of air bubbles that run along that line. I'm not clear on exactly where the air is being generated, but the clamps on the primary are suspicious. I did notice the engine beginning to hunt, ever so slightly, at idle, after a hard run. It hasn't done this in the past and I wonder if it's related to all that air............further investigation is required. Certainly, it's absolutely clear that the engine can run with a decent amount of air in the line from the fuel pump without any ramifications.
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#6
07-02-2009, 04:32 PM
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one of the cars (350sd) starts sosmetimes and idles fine but then sometimes you start it and it will start but you have to floor it jsut to get it to idle
then shut it on and start it and it will rev up fine but still not idle i just got a 90 2.5t in and its doing the same thing too ... when it rains it pours
__________________
http://www.youtube.com/watch?v=d-Z8X_r_l_M 79 300d "baby blue nose" (sold) 87 e300d (om603) "billy" (sold) 94 e300d (om606) "mcrae" (sold) 84 300td (om617) "mom" 82 300cd (om617) "whitey" 84 300sd (om617) "benzo valdez" 87 300sdl (om603) "chip" 90 e300d (om 602) "bev" 69 280c (om603 swap) "rommel" 74 internationl scout II (om617) "scout" 64 impala (4bt) "homie" 57 chevy apache (7.3 psd) "goldie"
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#7
07-02-2009, 04:35 PM
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There sure have been a lot 603's with weird issues lately.....just saying....
__________________
-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)
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#8
07-02-2009, 04:40 PM
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Quote:
__________________
Dan 2005 E320 CDI - 246k 1987 300SDL TD05-16g, Herlevi pump, Elbe manifold, 2.47 LSD - 213k Past: 1987 300D - 264k 
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#9
03-30-2010, 05:23 PM
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bump.
happened again after i got to work (engine running 30 mins) will be 'exploring' once i get home tonight
__________________
1987 300SDL "Rudolf" 239k 8/10 Gone but not forgotten -1980 F250 4X4 351C Snowplow "The Beast" -1976 Caddy Eldo Convertible, in triple red. "Red headed Slut" -2002 Honda Accord EX-V6 loaded 107k, My first brand new car! *IM A HORRIBLE SPELLER*
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