[urq] 83 urq stumble now 4k cutout

[Brandon Rogers]

Brady- not sure what you checked WRT the Air Temp Sensor, but make sure the
_connection_ to the wires is good in addition to the sensor itself being
good-that way the computer receives the proper signal.  I've seen them
soldered and not soldered--my understanding is a good soldering job on this
one is best.

Brandon
'84 ur

----- Original Message -----
From: "Brady Moffatt" <bradym at sympatico.ca>
To: "Martin Pajak" <martin at quattro.ca>; "urq" <urq at audifans.com>; "quattro"
<quattro at audifans.com>
Sent: Monday, April 28, 2003 8:01 AM
Subject: Re: [urq] 83 urq stumble now 4k cutout


> Thanks, Martin.
>
> I guess that leaves fuel pressure, because I checked the air temp sensor
> along with the idle and WOT switches last week. I'll check them again to
be
> sure.
>
> Any idea where to buy fuel pressure testing kits that have the right
> fittings for CIS and allow for high enough pressures? I bought one at
> Canadian Tire, but it needs a Schrader valve test port... Time to return
it.
>
> It's odd. I thought that by doing the FP relay mod that I'd gain fuel
> pressure. Not the case apparently.
>
> Could a boost leak cause a 4k cutout?
>
> Cheers,
> Brady
>
> ----- Original Message -----
> From: "Martin Pajak" <martin at quattro.ca>
>
>
> > You need to check your fuel pressures.
> > Cold and warm.
> >
> > 4k rpm, either the air temp sensor or the idle switch.
> >
> > The black connector at the back of the head.
> > On the '83 this can be either the cold start thermo switch (large one)
or
> > temp gauge sender (small one).
> >
> > Hope this helps.
> > Martin Pajak
>
> > > -----Original Message-----
> > > From: urq-admin at audifans.com [mailto:urq-admin at audifans.com]On Behalf
Of
> > > Brady Moffatt
> > >
> > > Hi All,
> > >
> > > Well, Louis-Alain and I spent hours on my urq today.
> > >
> > > We checked and tightened many small vacuum and large hoses,
> > > checked many electrical connectors,
> > > did fuel pump relay mod (it was at 11.9V before, though the
> > > connector was in
> > > beautiful shape),
> > > removed blowoff valve,
> > > checked O2 sensor operation,
> > > checked vacuum at warm idle (12-14" Hg),
> > > adjusted FVDC to 40% at warm idle,
> > > other stuff I can't remember.
> > >
> > > Now, the stumble is still there (though I think it's more subdued),
> > > and there is now a 4K RPM cutout to keep the stumble company!
> > >
> > > We also noticed that the black 2 pin connector on the back of the head
> is
> > > missing. It's probably not related, though.
> > >
> > > Anyways, what to do next to eliminate these problems?
> > >
> > > Cheers,
> > > Brady Moffatt
>
>
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