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Re: Re: 86 GT 2.8 Fuel pump problem
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CarGuru > Open discussion > Re: Re: 86 GT 2.8 Fuel pump problem 28 April 2005 10:30:49

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Re: Re: 86 GT 2.8 Fuel pump problem

Tim_86gt 3 April 2005 23:12:20
 "texasrocker1" wrote: > tim_86gt wrote: >
When its dead it feels like its starving for fuel. if i > spary starter > > fluid in the air intake it fires but dies out as soon as the > dry gas > > is gone. I really dont want to drop the gas tank if i dont > have to. > > does anyone know of anything easier it may be. > >
The fuel tank is pretty easy to remove if it's empty and you > jack the > car up high enough.

Well i replaced the ECM yesterday ($30). everything seemed ok. this
morning drove the car about 15 miles. let it sit for about 15
minutes. restarted and went to get a haircut(mile or so). 20 minutes
or so later...no fuel pressure at the schrader valve in the key on
position and it wont start. I looked at the testing procedure in the
chilton but it wont do me any good since it runs fine 90% of the time.
it only seems to quit when i am away from my garage.

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JazzMan 4 April 2005 09:08:05 permanent link ]
 tim_86gt wrote:>
"texasrocker1" wrote:> > tim_86gt wrote:> >
When its dead it feels like its starving for fuel. if i> > spary starter> > > fluid in the air intake it fires but dies out as soon as the> > dry gas> > > is gone. I really dont want to drop the gas tank if i dont> > have to.> > > does anyone know of anything easier it may be.> > >
The fuel tank is pretty easy to remove if it's empty and you> > jack the> > car up high enough.>
Well i replaced the ECM yesterday ($30). everything seemed ok. this> morning drove the car about 15 miles. let it sit for about 15> minutes. restarted and went to get a haircut(mile or so). 20 minutes> or so later...no fuel pressure at the schrader valve in the key on> position and it wont start. I looked at the testing procedure in the> chilton but it wont do me any good since it runs fine 90% of the time.> it only seems to quit when i am away from my garage.>

Get a short length of wire and some connectors from Radio Shack
and make a jumper to fit from the orange cigarette lighter power
wire to the fuel pump terminal in the ALDL behind the cigarette
lighter trim plate:

http://web2.airmail­.net/jsavage1/formul­a/aldlfuelpumpbypass­.jpg

Next time it quits connect the wire as described above and see
if the fuel pump works. If it does then there's a problem with
either the relay or wiring from the ECM to the relay. Also,
check that you actually have spark because the ECM will not activate
the pump unless it sees pulses from the distributor module and if
the module quits (the tachometer lays dead while cranking) then
you need a new module.

JazzMan
--
*******************­********************­*******************
Please reply to jsavage"at"airmail.­net.
Curse those darned bulk e-mailers!
*******************­********************­*******************
"Rats and roaches live by competition under the laws of
supply and demand. It is the privilege of human beings to
live under the laws of justice and mercy." - Wendell Berry
*******************­********************­*******************
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Tim_86gt 5 April 2005 02:32:38 permanent link ]
 "JazzMan" wrote: > tim_86gt wrote: > >
"texasrocker1" wrote: >  > > tim_86gt wrote: >  > > >  > > >   > > > When its dead it feels like its starving > for fuel. if i >  > > spary starter >   > > > fluid in the air intake it fires but dies > out as soon as the >  > > dry gas >   > > > is gone. I really dont want to drop the > gas tank if i dont >  > > have to. >   > > > does anyone know of anything easier it may > be. >   > > > >  > > >  > > The fuel tank is pretty easy to remove if it's > empty and you >  > > jack the >  > > car up high enough. > >
Well i replaced the ECM yesterday ($30). everything seemed > ok. this > > morning drove the car about 15 miles. let it sit for about > 15 > > minutes. restarted and went to get a haircut(mile or so). > 20 minutes > > or so later...no fuel pressure at the schrader valve in the > key on > > position and it wont start. I looked at the testing > procedure in the > > chilton but it wont do me any good since it runs fine 90% of > the time. > > it only seems to quit when i am away from my garage. > >
Get a short length of wire and some connectors from Radio > Shack > and make a jumper to fit from the orange cigarette lighter > power > wire to the fuel pump terminal in the ALDL behind the > cigarette > lighter trim plate: >
Next time it quits connect the wire as described above and see > if the fuel pump works. If it does then there's a problem with > either the relay or wiring from the ECM to the relay. Also, > check that you actually have spark because the ECM will not > activate > the pump unless it sees pulses from the distributor module and > if > the module quits (the tachometer lays dead while cranking) > then > you need a new module. >
JazzMan > -- > *******************­********************­******************* > Please reply to jsavage"at"airmail.­net. > Curse those darned bulk e-mailers! > *******************­********************­******************* > "Rats and roaches live by competition under the laws of > supply and demand. It is the privilege of human beings to > live under the laws of justice and mercy." - Wendell Berry > *******************­********************­*******************

Tested the Fuel pump with the hot Cig liter wire. The fuel pump spins
fine. Drove it around for a while and let it get warmed up. when it
stalled out tested the pump agian in the same manner and it did
nothing. Dropped the tank and replaced the fuel pump, strainer and
the 3 wire harness that runs from the tank up to the computer. It ran
good but it was late at night and the outside temp was below 40
degrees. Drove it in to work this morning and it did ok but agian it
was pretty cold out and it seems that i only have this problem when
the outside temp is over 50 or so. I will have my fingers crossed
when i drive home this afternoon.

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Visit Topic URL to contact author (reg. req'd). Report abuse: http://www.autoforu­mz.com/eform.php?p=5­18698
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Zombee_29 28 April 2005 10:30:49 permanent link ]
 i have the same problem just too give you some insight eventually the car
will stop starting period.. i have replaced the injectors and rebuilt the
pressure regulator ... i think as you do the fuel pump is whats wrong ill
change mine tommorow and let you know

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CarGuru > Open discussion > Re: Re: 86 GT 2.8 Fuel pump problem 28 April 2005 10:30:49

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