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RE: [bmw e28] Re:_[bmw_e28]_"Stutter"___528i,_Manual,__1985,_£126k

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  • Steve Austin
    Thanks for all the info. Jim s point has got me wandering - I don t mind spending for Vega fix, but I m being quoted $95 (US) for postage! Original BMW part
    Message 1 of 1 , Sep 2, 2004
      Thanks for all the info. Jim's point has got me wandering - I don't mind
      spending for Vega fix, but I'm being quoted $95 (US) for postage! Original
      BMW part over here �135 (GBP). So all together either $140 (US) for Vega fix
      (approx �80 GB) or �135 GB for BMW OE. Is the consensus that it's the
      transfer pump?

      >From: Ron Kall <ronjkall@...>
      >Reply-To: bmwe28@...
      >To: bmwe28@...
      >Subject: [bmw e28] Re:_[bmw_e28]_"Stutter"___528i,_Manual,__1985,_�126k
      >Date: Wed, 1 Sep 2004 14:23:43 -0700 (PDT)
      >
      >As an add on, I noticed a difference in starting the
      >car after I put in the new pump. The Vega pump works
      >just as well as the OEM one and only costs $30.00 USD.
      >The strainer was another ten dollars and offers more
      >surface area as well, about x3. You are right about
      >the heat though. When it was hot, I could not get up
      >3k
      >miles of hill. The car would vapor lock and stop. I am
      >referring to me 1986 528e.
      >
      >
      >--- jim845034 <sfj642@...> wrote:
      >
      > > Hi - have been watching this thread but rarely reply
      > >
      > > My 1985 528i was working well, but in checking round
      > > found that the
      > > transfer pump wasn't working. I fitted a
      > > replacement at 150GBP
      > > (over $200) BUT IT MADE ABSOLUTELY NO DIFFERENCE TO
      > > ANYTHING.
      > >
      > > I think the transfer pump was mainly for hot
      > > countries or where there
      > > had been some drain-down of the main fuel system. I
      > > disconnected my
      > > nice new pump - and the only change I could detect
      > > was that I lost
      > > the continual whining noise from the pump.
      > >
      > > The fuel regulator (sits on top of the engine at the
      > > end of the fuel
      > > rail) does have a major effect on these cars however
      > > - a new one is
      > > fairly cheap - 50GBP from BMW dealer. See Bentley
      > > for checks of
      > > pressures and bleed-down etc. Mine failed and gave
      > > confusing
      > > indications for a while.
      > >
      > > This it what I found - no guarantee of course !
      > > Just thoughts before
      > > you shell out !
      > >
      > > Regards from Jim Butterworth
      > > 1985 528i SE auto
      > > 1989 318i auto
      > >
      > >
      > >
      > > --- In bmwe28@..., "Steve Austin"
      > > <steveaustin1@h...>
      > > wrote:
      > > > Thanks Ian. The transfer pump is original, so
      > > with �126k on the
      > > clock and
      > > > having fitted a new main pump last year, I'll try
      > > that first.
      > > Cheers --
      > > > Paul
      > > >
      > > >
      > > > >From: iain@5...
      > > > >Reply-To: bmwe28@...
      > > > >To: bmwe28@...
      > > > >Subject: Re: [bmw e28]
      > > "Stutter"___528i,_Manual,__1985, �126k
      > > Date: Tue,
      > > > >31 Aug 2004 09:44:05 +0100
      > > > >
      > > > >If you find that repairing your transfer pump
      > > doesn't solve the
      > > problem
      > > > >take
      > > > >another look at your Air Flow Meter, these are a
      > > dreadfully
      > > unreliable part
      > > > >and movement of the internal flap doesn't always
      > > indacate that its
      > > working
      > > > >properly. The movement of the flap caused by
      > > manifold vacuum in
      > > tern moves
      > > > >a
      > > > >wiper arm housed in the black platic casing on
      > > top of the AFM,
      > > this arm
      > > > >wipes
      > > > >over a copper track to then give a reading to the
      > > ECU of how much
      > > air is
      > > > >coming in. If this copper track is coroded or
      > > dirty then
      > > incorrect
      > > > >readings
      > > > >are sent. And if you are getting your stuttering
      > > symptoms at
      > > roughly the
      > > > >same
      > > > >depression of the throttle each time then a
      > > certain part of the
      > > track could
      > > > >be
      > > > >worn / dirty.
      > > > >
      > > > >Many people are of the opinion that the track can
      > > be cleaned to
      > > improve
      > > > >things
      > > > >but I wouldn't recommend it, many an AFM have
      > > been killed off
      > > completely
      > > > >when
      > > > >tring this.
      > > > >
      > > > >Ideally you would put a known good AFM in your
      > > car and see if that
      > > solves
      > > > >your
      > > > >problem.
      > > > >
      > > > >If you don't have acess to one then you could buy
      > > a new or
      > > reconditioned
      > > > >one.
      > > > > www.gsfcarparts.com specialise in these to some
      > > extent but they
      > > don't
      > > > >come
      > > > >cheap. I would bet you won't see any change out
      > > of �125 for a
      > > recon.
      > > > >
      > > > >Iain
      > > > >
      > > > >"Steve Austin" <steveaustin1@h...> wrote:
      > > > >
      > > > > > Ron, Thanks once again. I live in England,
      > > we don't get 120F
      > > > > > temeperatures: -120F maybe! The "Vega trick"
      > > - I take it is a
      > > reference
      > > > >to
      > > > > > a cheaper part. I'll see if there are any
      > > distributors over
      > > here, but
      > > > >do
      > > > > > you have any more details. Eg Make, Model,
      > > etc.. Cheers. --
      > > Paul. (PS.
      > > > > > Ordered the diff oil from redline you
      > > recommended by the way.
      > > Will get
      > > > >that
      > > > > > changed tomorrow)
      > > > > >
      > > > > >
      > > > > > >From: Ron Kall <ronjkall@y...>
      > > > > > >Reply-To: bmwe28@...
      > > > > > >To: bmwe28@...
      > > > > > >Subject: Re: [bmw e28]
      > > "Stutter"___528i,_Manual,__1985,__�126k_
      > > > > > >Date: Mon, 30 Aug 2004 16:28:29 -0700 (PDT)
      > > > > > >
      > > > > > >Paul,
      > > > > > >
      > > > > > >It's the transfer pump. Try running up a
      > > 4,000 foot
      > > > > > >mountain at 6% grade and outside temperature
      > > at 120F.
      > > > > > >If it vapor locks before you get all the way
      > > to the
      > > > > > >top, then it's the transfer pump. Do the vega
      > > pump
      > > > > > >trick. It's only $30.00, USD of course. There
      > > are
      > > > > > >instructions online to see the fix. Search
      > > yahoo for
      > > > > > >the pix and detailed instructions.
      > > > > > >
      > > > > > >
      > > > > > >--- bty821185 <steveaustin1@h...> wrote:
      > > > > > >
      > > > > > > > For the last two years I've had a problem
      > > that
      > > > > > > > doesn't cause me too
      > > > > > > > many headaches, because of the way I drive
      > > and the
      > > > > > > > relatively few
      > > > > > > > miles per year I do, but I'd sure like to
      > > cure it.
      > > > > > > > When travelling
      > > > > > > > at a CONSTANT speed (eg 35mph in 4th,
      > > 20mph in 3rd,
      > > > > > > > etc... but does
      > > > > > > > not seem to happen after, say, 55/60mph in
      > > 5th)I get
      > > > > > > > what can only be
      > > > > > > > described as a "stutter" or part surge.
      > > The RPM
      > > > > > > > gauge doesn't move
      > > > > > > > and I have no hesitation when accelerating
      > > or
      > > > > > > > decelerating. But I get
      > > > > > > > the feeling that fuel is not getting
      > > through
      > > > > > > > properly. Last week
      > > > > > > > changed fuel filter again. 6k miles ago:
      > > New
      > > > > > > > fuses, cleaned main
      > > > > > > > grounds with Detoxit contact cleaner, New
      > > Main Fuel
      > > > > > > > Pump, Fuel Pump
      > > > > > > > relay, Fuel Filter, Fuel Pressure
      > > Regulator,
      >=== message truncated ===
      >
      >
      >=====
      >Ron Kall
      >Rancho Cucamonga, CA 91730
      >
      >
      >1986 528e
      >1985 535i
      >
      >
      >
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