[W126 Coupe] HELP! Car Salling!!!!!

[David G. Cole]

Dave,

Not necessarily, my '85 ignition control unit went on the fritz and, in
the beginning, would only fail very intermittantly and only after it was
running for a good bit and got hot. As some time went by the frequency of
failing increased as the amount of time it took, from first startup to
stalling, decreased. Finally got to the point (and in a very short amount
of time) of being able to run only 10 to 15 minutes before it gave out.

But all things considered, the fuel pump relay has a known history of this
same type of sympton while the ignition parts are usually very solid.
Focus on the fuel relay first.

David Cole


> I need some help with my dad's 85 500SEL.  The car
> seems to stall when it gets warm.  The strange thing
> is, it doesn't seem to be only when the car is at
> idle.  But driving down the highway the car will stall
> out.  My dad took it to one mechanic who changed some
> vacuum tubes and then charged him to change the
> ignition control unit (which I have replaced before).
> Now if it was the ignition control unit the car would
> not start at all because it wouldn't be telling the
> coil to release its charge.  But after the car stalls
> it starts up again.
>
> So I am thinking that the mechanic just took us for a
> ride, but I don't know what else it could be.  I know
> people have had this issue or something similar
> before.
>
> Any ideas on what we should look at?
>
> Thanks,
>
> David
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