Hey everyone. I recently took my 240D out of winter storage just to move it around a bit and noticed that in the cold temps (didn't happen in the summer) the idle adjustment knob is almost impossible to move. Is there any lubrication I can perform without dissassembly? Also, where do I look in the engine compartment to look for it's function?

Thanks!

I'd lubricate all connections in the accelerator linkage. I believe the cable attaches in the vicinity of the shut off lever.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Thank you sir! Is there any way of getting some lube inside the cable from inside the car? Maybe after removing the knob?

P.S. Which way must the knob be turned for higher idle?

Are you pressing the gas pedal while turning the knob?

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL

Yup, no difference with/without pedal input.

CCW increases the idle.

I just used mine today - temp here was close to freezing this morning. By the time I got to the end of my street, engine was warm enough to turn it back down.

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Current Mercedes
1979 maple yellow 240D 4-speed

Gone and fondly remembered:
1980 orient red 240D 4-speed

Gone and NOT fondly remembered:
1982 Chna Blue 300TD

Other car in the stable:
2013 VW Jetta Sportwagen TDI / 6-speed MT

Increase idle=turn left as in turning up the volume on your radio

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

Sorry, but on all radios i've used turning the knob CW increases the volume

Right, mine's like a garden water faucet - CCW = more flow = more fuel. Maybe repeated applications of small amounts of penetrating lubricant to the end of the cable could work its way up the cable.
Steve

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1980 300 TD

1997 Dodge Pickup/Cummins 5.9 12-valve

Thanks for ALL your replies!

Now, I BELIEVE that last summer, turning the knob CW raised the idle speed!! Now, if I am correct,and that IS possible, what the heck is likely the issue?

Does sound like cold lube in the cable. If you can, spray the aerosol lube of your choice on the cable toward the jacket on both ends.

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83 SD

84 CD

LOL, should have said "like the radios... I've had"

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"