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"Stutter" 528i, Manual, 1985, £126k

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  • bty821185
    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
    Message 1 of 7 , Aug 30, 2004
      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, and ran a bottle of
      redlne SI 1 injector and valve cleaner through fuel. Also, at same
      time: new Cap, rotor, leads, plugs, air filter, oil filter and oil
      change. Recently run another bottle of SI-1 injector cleaner
      through, and New Oil/filter change, Valve Adjustment, Air filter,
      plugs checked (perfect), Air flow sensor flap checked for binding
      (OK), Wynn's Injector/Carburettor Cleaner sprayed into
      intake/throttle body as per instructions on can. Can anyone suggest
      solution or a list, in priority order, of things to check. Could
      it be Transfer Pump? Partially restricted fuel lines? Throttle
      position switch? ECU? FIO> This car uses the L Jetronic system, there
      is no Oxygen Sensor and no EVAP (charcoal cannister) control. --
      cheers. Paul
    • Ron Kall
      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
      Message 2 of 7 , Aug 30, 2004
        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@...> 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, and ran
        > a bottle of
        > redlne SI 1 injector and valve cleaner through fuel.
        > Also, at same
        > time: new Cap, rotor, leads, plugs, air filter, oil
        > filter and oil
        > change. Recently run another bottle of SI-1
        > injector cleaner
        > through, and New Oil/filter change, Valve
        > Adjustment, Air filter,
        > plugs checked (perfect), Air flow sensor flap
        > checked for binding
        > (OK), Wynn's Injector/Carburettor Cleaner sprayed
        > into
        > intake/throttle body as per instructions on can.
        > Can anyone suggest
        > solution or a list, in priority order, of things
        > to check. Could
        > it be Transfer Pump? Partially restricted fuel
        > lines? Throttle
        > position switch? ECU? FIO> This car uses the L
        > Jetronic system, there
        > is no Oxygen Sensor and no EVAP (charcoal cannister)
        > control. --
        > cheers. Paul
        >
        >


        =====
        Ron Kall
        Rancho Cucamonga, CA 91730


        1986 528e
        1985 535i



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      • Ron Kall
        Has anyone tried to repaint the black band at the bottom of the body running from the front wheel well to the back wheel well. My color is Alpine White and the
        Message 3 of 7 , Aug 30, 2004
          Has anyone tried to repaint the black band at the
          bottom of the body running from the front wheel well
          to the back wheel well. My color is Alpine White and
          the black is very faded and almost gone in some
          sections. I would like to use something from a can
          with a brush so as to skip the masking issues of a
          spray can. Also surface prep issues?




          =====
          Ron Kall
          Rancho Cucamonga, CA 91730


          1986 528e
          1985 535i



          __________________________________
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        • Steve Austin
          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.
          Message 4 of 7 , Aug 31, 2004
            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@...>
            >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@...> 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, and ran
            > > a bottle of
            > > redlne SI 1 injector and valve cleaner through fuel.
            > > Also, at same
            > > time: new Cap, rotor, leads, plugs, air filter, oil
            > > filter and oil
            > > change. Recently run another bottle of SI-1
            > > injector cleaner
            > > through, and New Oil/filter change, Valve
            > > Adjustment, Air filter,
            > > plugs checked (perfect), Air flow sensor flap
            > > checked for binding
            > > (OK), Wynn's Injector/Carburettor Cleaner sprayed
            > > into
            > > intake/throttle body as per instructions on can.
            > > Can anyone suggest
            > > solution or a list, in priority order, of things
            > > to check. Could
            > > it be Transfer Pump? Partially restricted fuel
            > > lines? Throttle
            > > position switch? ECU? FIO> This car uses the L
            > > Jetronic system, there
            > > is no Oxygen Sensor and no EVAP (charcoal cannister)
            > > control. --
            > > cheers. Paul
            > >
            > >
            >
            >
            >=====
            >Ron Kall
            >Rancho Cucamonga, CA 91730
            >
            >
            >1986 528e
            >1985 535i
            >
            >
            >
            >__________________________________
            >Do you Yahoo!?
            >Yahoo! Mail - 50x more storage than other providers!
            >http://promotions.yahoo.com/new_mail

            _________________________________________________________________
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          • iain@535se.co.uk
            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
            Message 5 of 7 , Aug 31, 2004
              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@...> 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@...>
              > >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@...> 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, and ran
              > > > a bottle of
              > > > redlne SI 1 injector and valve cleaner through fuel.
              > > > Also, at same
              > > > time: new Cap, rotor, leads, plugs, air filter, oil
              > > > filter and oil
              > > > change. Recently run another bottle of SI-1
              > > > injector cleaner
              > > > through, and New Oil/filter change, Valve
              > > > Adjustment, Air filter,
              > > > plugs checked (perfect), Air flow sensor flap
              > > > checked for binding
              > > > (OK), Wynn's Injector/Carburettor Cleaner sprayed
              > > > into
              > > > intake/throttle body as per instructions on can.
              > > > Can anyone suggest
              > > > solution or a list, in priority order, of things
              > > > to check. Could
              > > > it be Transfer Pump? Partially restricted fuel
              > > > lines? Throttle
              > > > position switch? ECU? FIO> This car uses the L
              > > > Jetronic system, there
              > > > is no Oxygen Sensor and no EVAP (charcoal cannister)
              > > > control. --
              > > > cheers. Paul
              > > >
              > > >
              > >
              > >
              > >=====
              > >Ron Kall
              > >Rancho Cucamonga, CA 91730
              > >
              > >
              > >1986 528e
              > >1985 535i
              > >
              > >
              > >
              > >__________________________________
              > >Do you Yahoo!?
              > >Yahoo! Mail - 50x more storage than other providers!
              > >http://promotions.yahoo.com/new_mail
              >
              > _________________________________________________________________
              > It's fast, it's easy and it's free. Get MSN Messenger today!
              > http://www.msn.co.uk/messenger
              >
              >
              >
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              > bmwe28-unsubscribe@...
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              >
              > Yahoo! Groups Links
              >
              >
              >
              >
              >
              >
            • Ed MacVaugh
              I know you think you want a brush on material, but the best for that purpose is Wurth brand stone chip spray which is exactly what was on the car originally.
              Message 6 of 7 , Aug 31, 2004
                I know you think you want a brush on material, but the best for that
                purpose is Wurth brand stone chip spray which is exactly what was on the
                car originally. Local auto parts and home improvement stores here in the
                US sell masking supplies that are a strip of masking tape with a foot of
                plastic along with the tape. Makes each side of the car under an hour
                job. With that product, surface prep is simply a scrub down with bug and
                tar remover and wax and silicone remover (also from the auto parts
                store) to ensure adhesion.

                Ed

                Ron Kall wrote:

                > Has anyone tried to repaint the black band at the
                > bottom of the body running from the front wheel well
                > to the back wheel well. My color is Alpine White and
                > the black is very faded and almost gone in some
                > sections. I would like to use something from a can
                > with a brush so as to skip the masking issues of a
                > spray can. Also surface prep issues?
              • Ron Kall
                Paul, Clay had this awesome step by step with digital camera pix of the operation. Clay s site is down and the link is no longer active. Here is a link that
                Message 7 of 7 , Aug 31, 2004
                  Paul,

                  Clay had this awesome step by step with digital camera
                  pix of the operation. Clay's site is down and the link
                  is no longer active. Here is a link that generally
                  describes the situation:

                  http://www.unofficialbmw.com/repair_faqs/transfer_pump.html

                  It's a Chevy Vega pump, you can get it online from
                  partsamerica.com - Kragen in the U.S.

                  Mail me back and I'll grab the actual paperwork
                  tonight and mail you the model. I think it was FS-1,
                  and you will need to trash the BWM strainer in favor
                  of a better one that will fit right on your vega pump
                  that is attached to the original bracket with cable
                  ties. It sounds absurd, but it works great. I am
                  attaching a picture of what the transfer pump looks
                  like.

                  take care,


                  --- Steve Austin <steveaustin1@...> 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@...>
                  > >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@...> 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, and
                  > ran
                  > > > a bottle of
                  > > > redlne SI 1 injector and valve cleaner through
                  > fuel.
                  > > > Also, at same
                  > > > time: new Cap, rotor, leads, plugs, air filter,
                  > oil
                  > > > filter and oil
                  > > > change. Recently run another bottle of SI-1
                  > > > injector cleaner
                  > > > through, and New Oil/filter change, Valve
                  > > > Adjustment, Air filter,
                  > > > plugs checked (perfect), Air flow sensor flap
                  > > > checked for binding
                  > > > (OK), Wynn's Injector/Carburettor Cleaner
                  > sprayed
                  > > > into
                  > > > intake/throttle body as per instructions on can.
                  > > > Can anyone suggest
                  > > > solution or a list, in priority order, of
                  > things
                  > > > to check. Could
                  > > > it be Transfer Pump? Partially restricted fuel
                  > > > lines? Throttle
                  > > > position switch? ECU? FIO> This car uses the L
                  > > > Jetronic system, there
                  > > > is no Oxygen Sensor and no EVAP (charcoal
                  > cannister)
                  > > > control. --
                  > > > cheers. Paul
                  > > >
                  > > >
                  > >
                  > >
                  > >=====
                  > >Ron Kall
                  > >Rancho Cucamonga, CA 91730
                  > >
                  > >
                  > >1986 528e
                  > >1985 535i
                  > >
                  > >
                  > >
                  > >__________________________________
                  > >Do you Yahoo!?
                  > >Yahoo! Mail - 50x more storage than other
                  > providers!
                  > >http://promotions.yahoo.com/new_mail
                  >
                  >
                  _________________________________________________________________
                  > It's fast, it's easy and it's free. Get MSN
                  > Messenger today!
                  > http://www.msn.co.uk/messenger
                  >
                  >
                  >
                  > To unsubscribe from this group, send an email to:
                  > bmwe28-unsubscribe@...
                  >
                  >
                  > Yahoo! Groups Links
                  >
                  >
                  > bmwe28-unsubscribe@...
                  >
                  >
                  >
                  >


                  =====
                  Ron Kall
                  Rancho Cucamonga, CA 91730


                  1986 528e
                  1985 535i



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