I have an 88 300te also. Had the exact same problem. Put in a new
fuel pump relay, which helped somewhat, new fuel filter..no help. I
looked at the overload protection relay (ovp) but since the fuse was
not blown I figured it was ok. After several days of fooling around
with this problem and before the dreaded visit to a mercedes mechanic
I found an ovp relay at a junk yard and put it in just to see what
Immediately, revs when up and engine sounded great. I let the engine
get cold and it started right up, had a smooth idle. A bonus is
better acceleration and even the ac condensor fan which had not be
working sprang to life.
With these type of problems start with the ovp relay even if the fuse
is not blown. Oh yeah, my $120 fuel pump relay was not needed, I put
the old one back in and it still was running great.
> I have an 1988 300TE, it's my second car so it's not driven
> daily, only
> on weekends.
> Weird problem. The car starts right up and runs fine for ten
> Then the engine starts to idle rough and really shakes the
> whole car.
> In stop and go traffic the car will stall but start up again,
> but it's
> really hard to prevent the car from stalling when accelerating
> from a
> stop. After about ten minutes of rough running, it starts to
> run fine
> When it's running fine, it's really running great. Any ideas?
> going to the mechanic this week.
> Bob M.
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