[W126 Coupe] engine will not rev past 5,000 rpm

[Jim Nowak]

Thanks Satish!  I'll give it a try.

Jim

--- Satish Tummala <satish at tummala.net> wrote:

> Jim,
> 
> Try another ignition coil.  I had this problem when
> I first got my 119 
> engine in my car 4 years ago.  The car wouldn't rev
> pass 4500-5000rpm 
> neither.  I swapped one of the ignition coils with a
> new one and it fixed 
> the problem.  Interestingly, on mine, under full
> throttle, full load, it 
> would top out at 5000 rpm.  Under gentle, linear
> acceleration to 6250 rpm, 
> it wasn't a problem.
> 
> Satish
> 
> ----- Original Message ----- 
> From: "Jim Nowak" <jjnowak_32503 at yahoo.com>
> To: "Mercedes Coupes Mailing Lists"
> <mbcoupes at mbcoupes.com>
> Sent: Saturday, June 25, 2005 4:53 PM
> Subject: Re: [W126 Coupe] engine will not rev past
> 5,000 rpm
> 
> 
> >I changed both fuel pumps last night so we'll see
> if
> > that was the issue.  If not, I may have to switch
> to
> > an EFI system sooner than expected.
> >
> > Jim
> >
> >
> > --- Mister McGoo <eelploot at hotmail.com> wrote:
> >
> >
> > ---------------------------------
> >
> > Jim;
> >
> > I know this is not the same problem as yours, but
> last
> > week, coming to the end of a 2 hour drive, I
> suddenly
> > couldn't rev above about 1500rpm.  I had been
> driving
> > 110-120 Kph and out of the blue, 70 Km/hr was the
> top
> > speed.  And a hill slowed me down to 40 Kph.  No
> bad
> > noises, oil pressure fine, temp fine, perfect
> idle.
> >
> > I figured something had crawled under my
> accelerator
> > pedal and died there, but no.
> >
> > The problem?  The tri-pivot (mounted over the #1
> > injector) connecting the accelerator to the
> throttle
> > rod and the cruise servo rod, had seized
> absolutely
> > solidly.  Obviously, so solid it was that a 200lb
> foot
> > on the accelerator pedal couldn't budge it.
> >
> > When it cooled down (the day was hot, the engine
> > compartment was hotter!) I could move the pivot
> and
> > take it apart.  Bizarre!
> >
> > -Bellamy
> >
> >
> >
> >
> >
> >>From: Jim Nowak <jjnowak_32503 at yahoo.com>
> >>Reply-To: Mercedes Coupes Mailing Lists
> > <mbcoupes at mbcoupes.com>
> >>To: Mercedes Coupes Mailing Lists
> > <mbcoupes at mbcoupes.com>
> >>Subject: Re: [W126 Coupe] engine will not rev past
> > 5,000 rpm
> >>Date: Mon, 20 Jun 2005 20:24:40 -0700 (PDT)
> >>
> >>Does anyone know if a bad throttle position switch
> > can
> >>hinder the engine in the upper rpm range?  My
> engine
> >>hts a wall at 5,000 rpm and will rev no further. 
> Any
> >>ideas?  How do you test the TPS to make sure it is
> >>working properly?
> >>
> >>
> >>Jim
> >>The MB Coupes Website!
> >>W126 SEC Mailing List
> >>Postings remain property of MB Coupes, L.L.C.
> >
> >
> >
> >> The MB Coupes Website!
> >> W126 SEC Mailing List
> >> Postings remain property of MB Coupes, L.L.C.
> >
> > The MB Coupes Website!
> > W126 SEC Mailing List
> > Postings remain property of MB Coupes, L.L.C.
> >
> > 
> 
> The MB Coupes Website!
> W126 SEC Mailing List
> Postings remain property of MB Coupes, L.L.C.
>