[W126 Coupe] Engine Problems

attila13 at bellsouth.net attila13 at bellsouth.net
Sun Oct 1 22:15:53 EDT 2006



Axel, call Steve Lemberg. He is pretty good at over the
phone diagnostics on the 119.
> 
> From: "Axel Wulff" <axelwulff at hotmail.com>
> Date: 2006/10/01 Sun PM 09:15:19 EDT
> To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
> Subject: [W126 Coupe] Engine Problems
> 
> I'm experiencing a certain level of frustration with my SEC/M119 hybrid.
> 
> Three weeks ago the engine started cutting in and out on the highway. It was
> very abrupt so I suspected ignition failure, but I wasn't really sure
> whether it was fuel or electrical (fuel pump relay.......).
> 
> Brought the car over to my local garage where it appears the guy who has
> been working on my car in the past is no longer there.
> 
> After a couple of days they reported that the crank sensor was
> malfunctioning and that they recommended changing plugs and wires as well.
> 
> Picked the car up and it did not run any better. Now, instead of cutting in
> and out, it simply had no power, as if it was running on only a few
> cylinders.
> 
> Took the car back in and they found the catalytic converter clogged with
> fuel. Removing it made the car run great (or so they claim....), however
> cold starts will still dump fuel in the engine and cause severe start and
> running problems.
> 
> Any suggestions as to what I should tell them to look at?
> 
> The engine is the M119.960 from a '92 500SL.
> 
> I'm already looking for another mechanic........
> 
> Regards,
> Axel J. Wulff
> 610-731-5453 Cellular
> 
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