I always figured a thin coat of dieselfuel/oil preserved things in the
engine compartment. But I never had show cars. On the OM636, OM621,
OM615, OM616/7 and OM603/2/1 engines I don't think you'd hurt much. On
the OM606 on, with all the electronics, it is probably not advisable to
hose down the engine; certainly pressure washers on those engines.
Ralph,'84TD via Mercedes <mailto:mercedes@okiebenz.com>
September 10, 2016 at 4:54 AM
This brings up an interesting question; is it wise to do a detail on a
M.B. Diesel engine?
Ralph
On Saturday, September 10, 2016 5:46 AM, Dan Penoff via Mercedes
<mercedes@okiebenz.com> wrote:
MAFs arenât bad, but they can be tough to source.
Mercedes has rebuilt ones - the one for this car is about $370.00
reman, new $463.36. New ones are tough to coe by, but the remans are
usually in stock.
Dan
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Dan Penoff via Mercedes <mailto:mercedes@okiebenz.com>
September 10, 2016 at 4:45 AM
MAFs arenât bad, but they can be tough to source.
Mercedes has rebuilt ones - the one for this car is about $370.00
reman, new $463.36. New ones are tough to coe by, but the remans are
usually in stock.
Dan
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Dan Penoff via Mercedes <mailto:mercedes@okiebenz.com>
September 10, 2016 at 4:32 AM
If the âdetailerâ used silicone based products on or around the engine
compartment, they borked your MAF. If silicone gets on the sensing
parts of the MAF, it kills them. This is well known and documented.
Lift the hood and see if youâve got a shiny engine.
Dan
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Karl Wittnebel via Mercedes <mailto:mercedes@okiebenz.com>
September 9, 2016 at 9:50 PM
So I bought that low miles 1994 e420 from Jeremy and Co up in SF.
Figured I
need the car and they said it drove well and was in good shape, and that's
about all I need in a 420. Paid and they sent the car.
It arrived yesterday. Started, backed off trailer fine. It was about
8am so
I hopped in it and attempted to drive to work. Unfortunately, it would rev
to about 1500rpm and stall, and repeat the sequence about every second or
so. It idles as smooth as silk, just won't throttle up. No lights on the
dash. Never got out of first gear or above 20mph. Not good news!
Called tow
truck, then Lyft.
Herbert the German mechanic says the fault code is either the throttle
body
actuator or the computer that controls it. He says the throttle body
is not
opening properly in response to pedal input. He asks if there has ever
been
water on the engine. I say not to my knowledge. He is still sorting out
what exactly is failing. Either one is a spendy item apparently; 1500 for
the actuator and lord knows if a computer would even be available. Herbert
himself isn't cheap either, but he knows mercedes.
So I got Jeremy on the phone and relayed this info. He apparently drove it
for several days and to the smog place before listing it, and it was
completely fine including the dyno test at smog. He says they did detail
the engine after that though.
So here is the question: what stuff typically gets messed up when you wash
an e420 motor that can cause this sort of thing? I am still hoping for an
outside chance of something simple, and I figured I would see if there is
any collective wisdom on this topic.
Thanks,
Karl
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