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Car Forum / Mercedes-Benz Cars / February 2008Older MB diesel start switch question
This is just informational, not a problem per se: I have a '79 240D, '82 300TD, and '81 300SD. They are all quirky in their own ways but there is one common quirk I've always been curious about. If you turn the key to crank the engine and it doesn't start (or starts and dies, or you turn it off) you have to turn the key all the way out to the lock position take it out and put it back in to make it crank again. There is some kind of lock that prevents you from just turning it back to crank. Why? You should not have to pull the key out. Just turn it all the off till it stops and turn it back to crank. It is there so you cannot engage the starter after it is running. > This is just informational, not a problem per se: > [quoted text clipped - 7 lines] > > Why? So one doesn't "start" an already running engine!  Signature© 2008 T.G.Lambach. Publication in any form requires prior written permission. On Feb 1, 11:52 pm, "-->> T.G. Lambach <<--" <"T.G. Lambach at NoHamorSpamcomcast.net"> wrote: > So one doesn't "start" an already running engine! > -- > > © 2008 T.G.Lambach. Publication in any form requires prior written > permission. Well that's a sensible idea. I've never seen it on any other car I've had.Thanks to you both! > Well that's a sensible idea. I've never seen it on any other car I've > had.Thanks to you both! I had a 75 BMW 2002 that had that feature also. On Feb 4, 8:20 am, "weelli...@gmail.com" <weelli...@gmail.com> wrote: > > Well that's a sensible idea. I've never seen it on any other car I've > > had.Thanks to you both! > > I had a 75 BMW 2002 that had that feature also. My 2000 VW Jetta was the same way also. Apparently, its a German thing. DougS schrieb: > On Feb 4, 8:20 am, "weelli...@gmail.com" <weelli...@gmail.com> wrote: >>> Well that's a sensible idea. I've never seen it on any other car I've [quoted text clipped - 3 lines] > My 2000 VW Jetta was the same way also. Apparently, its a German > thing. They began to use this kind of starter in all cars with engines so silent you dont hear it idling as a step on the way to maintainence-free engines. A rotating flywheel destroys its tooth rim and the cantilever pinion if engaged by chance. The 700 rpm idling rev makes about 10 times the maximal rev of the starter rotating at 3000 rpm. Today of course the most important feature is the computer. The control unit has to know if a starting attempt was unsuccessfull. Therefore a parameter reset before the next starting attempt is mandatory. SignatureRoland Franzius |
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