That problem is usually caused by the microswitch at the throttle body. With
the throttle closed and agaisnt the switch, the circuit controlled by the
switch is supposed to be closed thus shutting off fuel between 1200 and 1800
rpms on deceleration. If that switch is the problem on your car, it is doing
the opposite. The microswitch is closing the circuit on acceleration and
shutting off the fuel delivery between 1200 and 1800 rpms. An easy way to
test this is by disconnecting the microswitch, the surging should disappear.
> On Mar 6, 2005, at 3:11 AM, kenneth parker wrote:
>
> >
> > I have an 84 GL wagon that does not idle well and seems to,
> > particularly when I keep a light foot on the pedal, be starving for
> > fuel. I have an identical engined sedan that does not, under the same
> > style of driving, exhibit any of the symptoms that my wagon does.
> >
> > I bought a very thorough, though complex way over my head, Bosch f.i.
> > book a while ago. I find it a little harder to understand T.S. Eliot's
> > "Four Quartets" and wonder if anyone could enlighten me with an
> > explanation as to how to adjust and diagnose the system in a manner
> > that, say, Fred Flintstone might understand.
> >
> > The car is recently tuned with new plugs, wires, valves meticulously
> > adjusted and, what seems to be a good distributor.
> >
> > Another thing that I have noticed that the car's cluster, heater
> > control and clock lights will often flicker. The battery light never
> > comes on when this happens.
> >
> > If anyone out there can suggest a way for me to cure that kind of
> > hunting lurching that I experience when I am not accelerating I would
> > be very appreciative. I would also like to know how to bump up the
> > idle a bit. Please, if any adjustments entail doing anything to that
> > weird spanner-like screw on the front of the f.i. unit or the 3mm allen
> > behind the air cleaner, please tell me what direction they should be
> > turned to get the desired effect.
> > Thanks,
> > Ken
> >
> >
> >
> >
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Received on Sun Mar 6 14:16:27 2005
