So I drove the 1985 300SD for 300 miles the other day. No problems.
Next morning, I start the car, need to depress the accelerator to get it to
start (it was not cold out) and once started, if I left off the pedal, it
would stall. After holding it at normal idle for a minute or so, it would idle
at low speed, but not stall...unless I put it in gear. Once the engine is up
to operating temp, it idles perfectly normally and there are no other
problems...
EXCEPT (this may or may not be related) about a year ago, the idle started
to slightly surge/pulsate until it got up to operating temp...actually up to
operating temp FOR A WHILE (like 15 minutes of driving). This also is not
effected by ambient temp.
It was raining during the 300 miles of driving - doubt that had anything to
do with it.
It now does this every time I start it when the engine is cold. Ambient temp
has nothing to do with it.
Any ideas as to what is going on?
Thanks,
Chris
Christopher McCann, Squier Park, Kansas City, Missouri
-1985 300SD, 217K, "Wulf"
-1982 300Dt, 117K, "little blue klatter box"
-1971 Case 222 Hydrive, "One Banger"
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Subject: Re: [MBZ] Next issue to sort out on rescued 79 240D
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LarryT said:
> Hi Kevin.
> Check the mixer valve assy on the firewall (located behind the trans
> dipstick on firewall) and check hose connections as Jim suggested. Other
> than that I can't help - but I may have the WSM instructions I may be able
> to send to you, once I figure out how.
>
I guess I should have mentioned in the original email that you will see a
small wet spot on the ground under the car and from taste, it's
antifreeze. So there is an external leak and I'd guess it's on the
firewall somewhere, but I've yet to try to pin it down. I guess more
detective work is in order.
...Kevin
