[urq] Cruise Control

[Robert A Dupree]

Yes wavering speedometer, even a little causes the old CC-computer to freak-out.  Fix is a new speedometer cable, and eliminate the silly 02-warning box.  Check RockAuto.com for cheap price on the cable.
I also believe (but have no proof) that the throttle-cable-cam needs a different shape to have the old-CC-computer be compatible in terms of operating smoothness with a modern(er) motor.  What you describe even happens on K24'd UrQs, sometimes also the surge'y throttle which is SUPER-ANNOYING on a long trip.

My plan - is to switch to the Audiovox aftermarket unit, if my original continues to be goofy after the car is back on the road.  But doing the basics again with ensuring adequate vacuum supply and reservoir (volume increase over stock) and restricting the ID of the vac-line to essentially slow down the control movements of the OE unit will be attempted first.  Somewhere in the old-days I even took apart the vac-switches at the pedal cluster and cleaned/lubed them so they held perfect vac for days.

Honestly the time spent, would be better on installing the Audiovox unit, and making the control-board work using the stock outputs from the UrQ stalk.

Rob D.

> -----Original Message-----
> From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On Behalf Of
> Brandon Rogers
> Sent: Tuesday, July 20, 2010 11:22 AM
> To: urq at audifans.com
> Subject: [urq] Cruise Control
> 
> Guys-
> While I'm thinking about getting my car ready for the Vegas GTG in October -
> I have plenty to do - one of the things is the cruise control.  It sets fine
> - but then speed drops slowly.  It's been quite a whiel sinece I tried to
> use but my recollection is that it hodl speed, then lets up and speed drops,
> then tries again and then lets up and speed drops.  Cumulative effect the
> speed drops.  I think I've put a mighty vac on the whole sustem and it held.
> I've swapped in a number of pumps, too.  What else would it be?  One thing
> is that my speedo wavers a very little bit - does this cause a varying
> signal to the CC system that messes it up?  How do you fix a wavering
> speedo?
> 
> Motor is a 3B but the CC system is stock WX - which I think is the exact
> same as 3B other then the diaphragm mounting location and maybe rod length.
> 
> TIA-
> 
> Brandon
> '84 ur
> 
> 
> 
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