DPR current/O2 sensor voltage

[dswalterwi at gmail.com (Don Walter)]

5-10mA is the normal range.  Are you sure you have the Ampmeter
connected correctly.  It needs to be in series with the two leads. 
Without the ampmeter connected the car should idle rough or die as you
need the continuity.  When the car is cold it should start out high
around 20ish and after a couple minutes it will drop to around 5 to 10
ish and flutuate up and down slightly.  I usually leave my test
harness installed and just jumper the two open leads so the car will
run normally.


On Mon, 20 Sep 2004 18:32:30 -0400 (EDT), C Boyko
<roccit_53@scirocco.cs.uoguelph.ca> wrote:
> Okay, I've looked in the Bentley, and can't find it, and figured someone
> could give me a quick answer.
> 
> I'm wanting to adjust my mix on the 16V, and finally got a harness hooked
> up to measure DPR current, right now it's fluctuating between .1 and .2 mA
> and I seem to remember the goal being just rich of .5 if I could remember
> whether higher is richer or leaner. I know it's "righty richy" on the
> Allen key.
> 
> So question one is does low = rich or lean, and what's the target value?
> 
> Anyway, I'll check the O2 input first, it should be 5ish too, on whatever
> voltage scale, right? (0 being dead and 10 being full rich?) I have it
> written somewhere, but it's been two years since I last checked it. Sorry
> to be so non-technical here, but the car feels like it wieghs 4000 lbs at
> the moment, I'd like to reduce the dog factor. It's gotta be near where it
> can't adjust out of it.
> 
> That makes question two "what is ideal value for the O2 signal?"
> 
> Thanks.
> 
> Cathy
> 1987 2L 16V Scirocco - the Silver Headache
> 1979 1.8L 10:1 8V - Klaus- sounds like 0.33 of a Chevelle
> "The light at the end of the tunnel is probably an oncoming train"
> 
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-- 
Don Walter - Waukesha, WI
1986 1.8 16V Black Scirocco
1986 2L 16V Toronado Red Scirocco (under repair)
1988 1.8 16V Toronado Red Scirocco (sold on 3/29/04)
1984 1.8 8V Pewter Scirocco (sold years ago)
1971 Karman Ghia (sold)
1969 Karman Ghia (sold)
1969 Beetle (sold)