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#16
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So I had a chance tt do some more troubleshooting after work tonight. It wasn't as easy as a fuse. I wnet back through everything I've already done. Unplugged some connectors, reconnected them, cleaned the battery terminals, generally shook anbd wiggled everything I could. And it cranked!! Tried it a second time it cranked, but took a long time to fire and run, but it ran. I shut it down, put everything back together and it does the same thing it was doing when I started the thread. So I think it's a wiring probel. I found the glow plug relay, I think, it's solid state and don"t see any type of fuse. Any ideas??
Wayne |
#17
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No Fuse in Your Pre-Glow Relay
It's Electronically Protected.
(It disconnects itself in case of Dangerous Shorts until They're fixed) Yeah,you've self diagnosed your problem...Wiring Connection(S)! Time to drag out the old DMM.
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'84 300SD sold 124.128 |
#18
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had similar symptoms - workaround
Folks,
My 93 300 SD would occassionally do the same thing. Turn the key and I think only the airbag light would come on. I never solved it but found a work around. I connected a remote starter - like you use during a gas tune up to bump the starter. I turned the key to the on position, hit the remote starter from under the hood, and the car would crank, start, then the lights on the dashboard would flash in random orders, something would reset, and all was fine again. This typically happened to me in very hot weather ( 95*) or after long drives. I suspect it was part the wiring harness degrading issue that hits these years, but I never found a definitive answer. I left the remote starter in place all the time and the 3 or 4 additional times this happened it always started the car and cleared out the issue. Hope you find the root cause. Chuck |
#19
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careful, as this bypasses the neutral safety switch. be SURE you are in park, and the parking brake is set before you hit the switch!!!
don't ask me how I know this...
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#20
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Quote:
Quote:
you could also set up the remote starter switch inside the car w140 Wiring Harness Replacement -- Easy? 1994 S420 w140 Wiring Harness Replacement -- Easy? 1994 S420 Quote:
Last edited by 300D85; 04-28-2011 at 04:14 PM. |
#21
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Definetely not a bad stater. I got it to turn over this morning, but didn't have time to dick with it very much. Went over to the hangar at lunch this evening and got the car started, put in gear(reverse and drive) drove it accross the hangar and back. Didn't shut down until I shut it down. Pretty much discounts a bad neutral switch I think. The wiring harnesses look to be in good shape, the insulation isn't cracked or mising so I think it's has been replaced along the line. Still do not get any caution lights on the instrument panel and it takes a long time to start when it will crank. may have more than one problem. Anyway as soon as I can get it back together and started, it's gong to the local mechanic that at least knows what a mess European electrical systems are. I have too much else going to fool with it right now
Wayne |
#22
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Quote:
this test proves nothing about the switch.
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#23
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Good point! Unless the switch is as we say in aviation, AFU (all f@#%*d up) and doesn't know what position its in. Anyway the point was I wasn't able to duplicate the shutdown I originally had. THe more I ponder on it, the more I think it's the igniton switch. Just wish MB had their schematics drawn better.
Wayne |
#24
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So Murphy's 5th Law of Automotive Repair, is "When demonstrated for the repairman, the appliance will work everytime." And it did. 8 bucks for a can of Graphite lube, shot into the key tumbler, and everything works as advertized! Lots of expletive deletives to follow
Wayne |
#25
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never put a wet key in that lock anymore.
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hum..... 1987 300TD 311,000M Stolen. Presumed destroyed |
#26
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Why would you put a wet key in anyway? Ain't that like putting your finger in a light socket?
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