Re: Electrical gremlins, continued...

[Brian C Barrows <ferret100@juno.com>]

The fuel filter was replaced in the summer.  It wasn't the cleanest in
there, but it didn't seem too bad either.  To be on the safe side, I have
taken the precation of only draining the tank halfway.  The bucking
continues through the entire range except at closed throttle, but it's at
its worst in the 2.5 - 3.5k range.  I don't hear any relay clicking,
either.  

I am inclined to think the problem is electrical since (until recently)
it would go away with a load on the electrical system, such as the
headlights.

B.

'82 Scirocco (a.k.a. "Fritz")
'85 Jetta
GO HOKIES!!!

On Mon, 03 Jan 2000 22:26:13 PST "Chris DeLong" <green536@hotmail.com>
writes:
> Have you replaced the fuel filter? Does it stop bucking at higher 
> rpms? You 
> could have some bad grounds uder the dash or on the intake manifold. 
> Do you 
> hear relays clicking when it does this? I had a similar problem with 
> my 
> wifes jetta ('82) and I put an 0 gauge cable from the battery to the 
> body 
> and it helped quite a bit. HTH
> 
> 
> >From: Brian C Barrows <ferret100@juno.com>
> >To: scirocco-l@scirocco.org
> >Subject: Electrical gremlins, continued...
> >Date: Mon, 3 Jan 2000 21:08:37 -0500
> >
> >I asked about this a few months ago, but let's recap:
> >
> >My Scirocco has been bucking for quite a while, around 2500 - 3500 
> rpm.
> >My fuel-air gauge showed that the mixture would cycle between 
> normal and
> >lean at about 1.5 cycles per second.  I have made it my mission to 
> solve
> >this problem.  I replaced all of the vacuum lines, O2 sensor, 
> injector
> >seals and the control pressure regulator (which was bad).  That 
> didn't
> >solve the problem, but I found that if I turned the headlights on 
> the car
> >would run properly.  But once the lights were turned off it would 
> run
> >like crap again.  No one I have spoken to could figure it out .
> >Everytime I did some kind of electrical work, the car would buck 
> again.
> >The solution to the problem would be (I'm not making this up!) to 
> crank
> >up the idle and the %CO (to minimize the bucking), drive about 30 
> miles
> >for the car to "reset" itself, and then bring the idle and %CO back 
> to
> >normal.  It makes no sense, but it works.  I have given up trying 
> to
> >solve the problem (I found it simpler to just turn on the damn 
> lights!).
> >
> >
> >Two weeks ago I replaced some of the ground cables and the positive
> >battery terminal clamp, along with cleaning the battery ground.  
> The
> >problem returned, and this time it wouldn't go away.  I went to 
> test the
> >control pressure regulator again, and it was working.  I forgot to 
> plug
> >the regulator back in.  Now the car is running beautifully.  It 
> starts
> >out a bit rough and runs pretty rich during warm-up, but after 
> about 15
> >minutes it's running slightly rich.
> >
> >Any ideas?  I"m totally stumped by my 2,100 lb brain-teaser.  My 
> attitude
> >right now is to simply leave the regulator unplugged until the car 
> has to
> >go into the shop for something I can't fix.  I think the only thing 
> to do
> >now is sit back and have a Corona...
> >
> >B.
> >
> >'82 Scirocco (a.k.a. "Fritz")
> >'85 Jetta
> >GO HOKIES!!!
> >
> >--
> >Email problems to: scirocco-l-probs@scirocco.org  To unsubscibe 
> send
> >"unsubscribe scirocco-l" in the message to majordomo@scirocco.org
> >
> 
> 
> Chris DeLong
> ICQ#45030867
> Seattle, WA USA
> '80 16V Rag
> '65 Bus (ugly, but good for campin' W/toaster oven)
> '82 GLI (with a severely mangled trunk lock thanks to the fucking 
> thieves!)
> '80 'Vert
> '61 17 Window
> '78 Scirocco
> 
> 
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