RE: More datapoints on my ur-Q

["Buchholz, Steven" <Steven.Buchholz@kla-tencor.com>]

Hi there Doug,

... sorry about missing the follow on message regarding the fusebox recall
... if you have an ammeter that can do 10amps or more measure the current to
the pump.  I believe the nominal current is somewhere around 4-5 amps, and
when it gets up to the 8-10 amp range the pump is about to go (at least that
was what I measured on my old Fox just prior to failure ... AFAIK my QTC is
still running the OEM pump).  What can happen at the higher current level is
that the higher temperature increases the oxidation rate which makes the
contact resistance increase ... which causes more heat to be generated.  

On the idle screw deal ... when I looked into it a few years ago I found
that the o-ring was NLA.  A new screw wasn't _that_ expensive so I bought
the whole thing.  The screwy deal that I found out was that the o-ring does
not have a circular cross section!  That whole thing is a funky design and
due to heat and vibration even a new one will go out eventually.  What I did
was to run a bit of anti-seize lube along the topmost threads.  I figured
the lube would seal the threads and "gum" them up enough to prevent the
screw from walking around due to vibration.  Be careful not to get the anti
seize too far down the threads as it apparently can ruin your OXS if it gets
through the engine.  I may have the old screw in the toolbox at home but I
wouldn't count on it ... I'll look and let you know if I find it.  Let me
know if you don't find one anywhere else and I'll make a more concerted
effort.

HTH!
Steve Buchholz
San Jose, CA (USA)

	----------
	The idle speed is high, about 1050-1150rpm. And the idle speed 
	screw on the throttle body has been mangled beyond use. I'll
	probably have to drill it out to get a new one in.

	Anybody know the nitty-gritty on idle adjustment screws? ETKA shows
	035.133.432 for the screw and 035.133.144A for the screw w/gasket
	(o-ring?). For the 5ktq, it gives 035.133.432A. 

	And, anyone got a spare ur-Q idle adjustment screw?