1989 k-1500 acceleration problem

On Apr 30, 4:13 am, Old Crow <wallisc....RemoveThis@yahoo.com> wrote:
> On Tue, 29 Apr 2008 19:59:51 -0700 (PDT), thirdeye
>
> <Illsley1....RemoveThis@gmail.com> wrote:
> >I have a 1989 chevrolet k 1500 4x4 truck with the 4.3 L TBI Engine.
> >When accelerating, the truck seems to stumble/hesitate.   It almost
> >feels like the truck is bucking up the road.  It will do this if you
> >hit the gas hard, but stops when you let off.  Put new plug wires on
> >about 2 months ago.  any idea what the problem could be??
>
> Could be a lot of things, but I think I'd try and change the fuel
> filter first.
> --
> Old Crow
> '82 FLTC(P)
> '95 Wrangler YJ
> BS#132, TOMKAT, SENS, SLOB#13
> ** Posted fromhttp://www.teranews.com**


...and spark plugs, and perhaps a new distributor cap and rotor, is
where Id go next.
 >> Stay informed about: 1989 k-1500 acceleration problem 

"thirdeye" <Illsley1983 RemoveThis @gmail.com> wrote in
message
news:92563bf0-0944-4f33-b6d9-68e5d11c0444@e53g2000hsa.googlegroups.com...
>I have a 1989 chevrolet k 1500 4x4 truck with
>the 4.3 L TBI Engine.
> When accelerating, the truck seems to
> stumble/hesitate. It almost
> feels like the truck is bucking up the road.
> It will do this if you
> hit the gas hard, but stops when you let off.
> Put new plug wires on
> about 2 months ago. any idea what the problem
> could be??

Just had a similar problem with a 94 K1500 5.7.
Idled OK, cruised OK, accelerated
OK if I was very gentle. Any normal
acceleration bucked/stumbled badly.

It's probably ignition. Plugs, wires,
distributor cap, rotor. Mine was distributor
cap.
The center tower contact was melted and loose
and the coil wire was fried.

DO NOT use a cap/rotor with aluminum connectors.
Spend the money for brass!

Bill
 >> Stay informed about: 1989 k-1500 acceleration problem 

On Apr 30, 8:37 am, "BillM" <billma... RemoveThis @verizon.net> wrote:
> "thirdeye" <Illsley1... RemoveThis @gmail.com> wrote in
> messagenews:92563bf0-0944-4f33-b6d9-68e5d11c0444@e53g2000hsa.googlegroups.com...
>
> >I have a 1989 chevrolet k 1500 4x4 truck with
> >the 4.3 L TBI Engine.
> > When accelerating, the truck seems to
> > stumble/hesitate.   It almost
> > feels like the truck is bucking up the road.
> > It will do this if you
> > hit the gas hard, but stops when you let off.
> > Put new plug wires on
> > about 2 months ago.  any idea what the problem
> > could be??
>
> Just had a similar problem with a 94 K1500 5.7.
> Idled OK, cruised OK, accelerated
> OK if I was very gentle.  Any normal
> acceleration bucked/stumbled badly.
>
> It's probably ignition.  Plugs, wires,
> distributor cap, rotor.  Mine was distributor
> cap.
> The center tower contact was melted and loose
> and the coil wire was fried.
>
> DO NOT use a cap/rotor with aluminum connectors.
> Spend the money for brass!
>
> Bill

having same problem w/94 K1500 replaced plugs, wires, fuel filter,
distributer cap & coil wire. When I first start up and 1st mile or so
no problem, then starts stumbling unless real slow with accelerator.
Going to replace coil while I wait for a reply.
kirk
 >> Stay informed about: 1989 k-1500 acceleration problem 

jeckyl11 DeleteThis @hotmail.com wrote:
> On Apr 30, 8:37 am, "BillM" <billma... DeleteThis @verizon.net> wrote:
>> "thirdeye" <Illsley1... DeleteThis @gmail.com> wrote in
>> messagenews:92563bf0-0944-4f33-b6d9-68e5d11c0444@e53g2000hsa.googlegroups.com...
>>
>>> I have a 1989 chevrolet k 1500 4x4 truck with
>>> the 4.3 L TBI Engine.
>>> When accelerating, the truck seems to
>>> stumble/hesitate. It almost
>>> feels like the truck is bucking up the road.
>>> It will do this if you
>>> hit the gas hard, but stops when you let off.
>>> Put new plug wires on
>>> about 2 months ago. any idea what the problem
>>> could be??
>> Just had a similar problem with a 94 K1500 5.7.
>> Idled OK, cruised OK, accelerated
>> OK if I was very gentle. Any normal
>> acceleration bucked/stumbled badly.
>>
>> It's probably ignition. Plugs, wires,
>> distributor cap, rotor. Mine was distributor
>> cap.
>> The center tower contact was melted and loose
>> and the coil wire was fried.
>>
>> DO NOT use a cap/rotor with aluminum connectors.
>> Spend the money for brass!
>>
>> Bill
>
> having same problem w/94 K1500 replaced plugs, wires, fuel filter,
> distributer cap & coil wire. When I first start up and 1st mile or so
> no problem, then starts stumbling unless real slow with accelerator.
> Going to replace coil while I wait for a reply.
> kirk

My 1984 GMC Jimmy High Sierra stumbles while accelerating from about 40
to 45 when in overdrive, but does okay when in regular drive.

Terry
 >> Stay informed about: 1989 k-1500 acceleration problem 

On May 17, 7:20 pm, jecky....DeleteThis@hotmail.com wrote:
> On Apr 30, 8:37 am, "BillM" <billma....DeleteThis@verizon.net> wrote:
>
>
>
>
>
> > "thirdeye" <Illsley1....DeleteThis@gmail.com> wrote in
> > messagenews:92563bf0-0944-4f33-b6d9-68e5d11c0444@e53g2000hsa.googlegroups.com...
>
> > >I have a 1989 chevrolet k 1500 4x4 truck with
> > >the 4.3 L TBI Engine.
> > > When accelerating, the truck seems to
> > > stumble/hesitate.   It almost
> > > feels like the truck is bucking up the road.
> > > It will do this if you
> > > hit the gas hard, but stops when you let off.
> > > Put new plug wires on
> > > about 2 months ago.  any idea what the problem
> > > could be??
>
> > Just had a similar problem with a 94 K1500 5.7.
> > Idled OK, cruised OK, accelerated
> > OK if I was very gentle.  Any normal
> > acceleration bucked/stumbled badly.
>
> > It's probably ignition.  Plugs, wires,
> > distributor cap, rotor.  Mine was distributor
> > cap.
> > The center tower contact was melted and loose
> > and the coil wire was fried.
>
> > DO NOT use a cap/rotor with aluminum connectors.
> > Spend the money for brass!
>
> > Bill
>
> having same problem w/94 K1500 replaced plugs, wires, fuel filter,
> distributer cap & coil wire.  When I first start up and 1st mile or so
> no problem, then starts stumbling unless real slow with accelerator.
> Going to replace coil while I wait for a reply.
> kirk- Hide quoted text -
>
> - Show quoted text -

Replaced coil, idle speed control, ignition contol module. Still
stumbling on accelleration from idle any ideas??
 >> Stay informed about: 1989 k-1500 acceleration problem 

On Mon, 2 Jun 2008 09:32:03 -0700 (PDT), jeckyl11.DeleteThis@hotmail.com wrote:

>On May 17, 7:20 pm, jecky....DeleteThis@hotmail.com wrote:
>> On Apr 30, 8:37 am, "BillM" <billma....DeleteThis@verizon.net> wrote:
>>
>>
>>
>>
>>
>> > "thirdeye" <Illsley1....DeleteThis@gmail.com> wrote in
>> > messagenews:92563bf0-0944-4f33-b6d9-68e5d11c0444@e53g2000hsa.googlegroups.com...
>>
>> > >I have a 1989 chevrolet k 1500 4x4 truck with
>> > >the 4.3 L TBI Engine.
>> > > When accelerating, the truck seems to
>> > > stumble/hesitate.   It almost
>> > > feels like the truck is bucking up the road.
>> > > It will do this if you
>> > > hit the gas hard, but stops when you let off.
>> > > Put new plug wires on
>> > > about 2 months ago.  any idea what the problem
>> > > could be??
>>
>> > Just had a similar problem with a 94 K1500 5.7.
>> > Idled OK, cruised OK, accelerated
>> > OK if I was very gentle.  Any normal
>> > acceleration bucked/stumbled badly.
>>
>> > It's probably ignition.  Plugs, wires,
>> > distributor cap, rotor.  Mine was distributor
>> > cap.
>> > The center tower contact was melted and loose
>> > and the coil wire was fried.
>>
>> > DO NOT use a cap/rotor with aluminum connectors.
>> > Spend the money for brass!
>>
>> > Bill
>>
>> having same problem w/94 K1500 replaced plugs, wires, fuel filter,
>> distributer cap & coil wire.  When I first start up and 1st mile or so
>> no problem, then starts stumbling unless real slow with accelerator.
>> Going to replace coil while I wait for a reply.
>> kirk- Hide quoted text -
>>
>> - Show quoted text -
>
>Replaced coil, idle speed control, ignition contol module. Still
>stumbling on accelleration from idle any ideas??

Check out the EGR. If it opens too wide or too soon it'll cause a
stumble off idle.
--
Old Crow
'82 FLTC(P)'Pearl'
'87 FLTC '?'
'95 Wrangler YJ
BS#132, TOMKAT, SENS, SLOB#13
** Posted from http://www.teranews.com **
 >> Stay informed about: 1989 k-1500 acceleration problem