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WILL ONLY START IN NEUTRAL!!
I have a '95 300D that will only start in neutral. I'm figuring the sensor is bad that tells it its in park. Where is this sensor located and is it an easy fix? Thanks for the help.
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1995 E300D |
#2
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Does wiggling the shifter help? Will it start in gear? The neutral safety switch is located on the transmission, left side, external to the transmission. Remove the rear belly pan for access. Check the wiring to the switch, the 1995 models featured disintegrating insulation. The switch should be removable but I have not done the job myself -- we need to hear from someone with better experience. You might be able to take the switch apart and find it's just some corroded switch contacts that can be cleaned up.
Jeremy
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"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970 |
#3
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The same sensor completes the circuit in P and N. Before messing with the NSS, make sure the rod between the shift lever and transmission has intact bushings at both ends. Sometimes you find part of a bushing, sometimes nothing's left. There's also an adjustment to be made on the NSS. You can use a continuity tester to set it in the middle of it's contact range or have someone check the reverse lights as you guess the middle of the range with the transmission in R. Yes, it's also the reverse light switch. The rod itself if adjustable for length. But start with the bushings!
Sixto 87 300D |
#4
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Thanks for the info.
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1995 E300D |
#5
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I had an intermittent no-start situation a couple months ago. I was told several things by several seemingly knowledgable people: ignition switch, neutral safety switch, bad starter, etc. Turns out, my floppy shifter was to blame. Couple of bushings later, I haven't had that no-start situation since.
I've developed the philosophy of fixing the easiest likely problems first and working my way towards the hardest. Doesn't always resolve itself the first try, but in this case, it did!
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1984 300TD Turbodiesel - 272k - Daily Duty 1985 300D Turbodiesel - 315k - "Recommended for competition events only" |
#6
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Quote:
The problem was the A/C drain on the driver side of the transmission, It had disintegrated and there was nothing left of it hanging downwards, condensate would drip into the switch.. Fixed with some new piping that hangs downwards till the bottom of the transmission - i later saw that the WIS also shows the driver side drain pipe as hanging downwards and the passenger side as a stub only. (made sense now)
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2012 BMW X5 (Beef + Granite suspension model) 1995 E300D - The original humming machine (consumed by Flood 2017) 2000 E320 - The evolution (consumed by flood 2017) |
#7
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Make sure nothing is lodged in between the selector and the final park position.
I've had this happen before... |
#8
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Thanks, I'll have a look
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1995 E300D |
#9
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Drain
Quote:
Jeremy
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"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970 |
#10
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If you look at the FSM to clear the drains - you will see that one tube is shown literally hanging near the upper edge of the trans pan. I used some foam tube I found in the recycle bin at work when I was dumping a printer. It was just the right width.
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2012 BMW X5 (Beef + Granite suspension model) 1995 E300D - The original humming machine (consumed by Flood 2017) 2000 E320 - The evolution (consumed by flood 2017) |
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