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CISe system q's [Potentiometer]



I'd guess the reason it makes a difference on a warm car is that if you unplug it, the computer reads no signal and acts as if the engine were cold and needed transient throttle enrichment just to be safe.  Just a guess though, maybe it does function all the time.

> 
> From: Jason <jason@scirocco.org>
> Date: 2003/07/28 Mon PM 05:24:46 EDT
> To: Ryan H <rhock99@epix.net>,  Captnbr@aol.com
> CC: scirocco-l@scirocco.org
> Subject: Re: CISe system q's [Potentiometer]
> 
> At 09:47 PM 7/25/2003, Ryan H wrote:
> >So, can you tell us around how long it acts like that?  10 seconds?  2 
> >minutes?  20 minutes?  Maybe I can at least get u on the right track.
> 
> I just looked it up in the Bosch manual last night.  According to the 
> manual, it indeed only works with a cold engine. Mine made a hugely 
> noticeable difference when unplugged with a totally warm engine.  I think 
> VW might have changed the programming to make use of the potentiometer all 
> the time.
> 
> But anyway, according to the Bosch book, it's coolant temperature 
> dependent, so the length of time would vary based on how quickly the engine 
> warmed up.
> 
> Jason
> 
> 
> 
> 
> 
> 
> > >
> > > From: Captnbr@aol.com
> > > Date: 2003/07/25 Fri PM 04:42:04 EDT
> > > To: Scirocco-L@scirocco.org
> > > Subject: Re: CISe system q's
> > >
> > > In a message dated 7/24/2003 10:53:37 PM Eastern Standard Time,
> > > rhock99@epix.net writes:
> > >
> > > <<Also, give the throttle some quick blips - without the sensor plugged 
> > in,
> > > it bogs nicely.>>
> > >
> > > OK well  I don't have a problem with blipping the throttle, it 
> > throttles up
> > > real nice.  Just when I start to drive it boggs down and hesitates.  I 
> > tried
> > > disconnect the switch like you said and it made it much worse so that is
> > > working.
> > > Brian 86 16v
> > > 98 Jetta GLX Vr6
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> > >
> >
> >
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>