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Re: Ohh my heartache-Mk1 16v don't like me
Chances are that the fuse box wasn't changed. Good
thing you did then. Are you using the Oxygen Sensor
Control Unit from your '81 or from the 16v?
If you are using your old Oxygen Sensor stuff it may
not be sending the correct signals to the brain box.
Unfortunately I don't have much knowledge when it
comes to the brain boxes as I have never had a car
with one. Or an Oxygen Sensor.
Also do you have continuity between terminal 31b on
the fuel pump relay and termianl 1 on the coil. Both
should have 12v to ground with the key on.
Next check teminal 15 on the fuel pump relay with the
key on. should be 12v to ground if not something
between the key on and terminal 15 is wrong.
Check continuity terminal 31 on the fuel pump relay to
ground should be no resistance.
With key on check between termianl 87 on fuel pump
relay to ground should be 12v.
This should check out the fuel pump relay. if bad get
a new one. Does pump come on with a jumper?
Have you gotten it to spark yet?
Your Acc lights would lead me to believe there is a
continuity loss somewhere to the alternator light.
Maybe your light not coming on is causing all your
problems. Ya never know I know that the light affects
other sending units. On the older cars. with egr.
Happy Hunting
-Emile Draper
'80 'rocco
> Awesome.. But, A8 was melted on my old box. What
> sense does that make? It
> doesn't look like there ever was a pin or wire in
> the harness in position
> A8, and the fuel pump relay has been located on top
> of the box with an
> extension feed. So the recall's been done. Right.
> But why would A8 be
> melted? Would it be because the relay was having
> occasional problems and
> then the recall was out which fixed it, and they
> fixed the wiring, but
> didn't fix/replace the fuse box? If they didn't
> replace the fuse box, it
> left it in iffy shape. This is making more and more
> sense.
> Wow. This is deep. This is almost mind-bending. I
> plugged the extension
> relay harness into relay position "L" on the fuse
> box.
> I know the jumper's there. I'll check continuity to
> terminal 1. You're
> saying A3 and A5 should be routed to coil terminal
> 1, right?
> Well, it was explained to be that only older cars
> without the transistorized
> breakerless ignition system had these wires. My '81
> with O2 sensor did not
> have this wire, and it still doesn't.
>
> What confused me on this is that my old Bentley
> tells me that '81 Scirocco's
> sold out of California do NOT have this breakerless
> transistorized ignition
> system and therefore no O2 sensor.
>
> It's wrong. Mine DOES have it and an O2 sensor.
>
> The Bentley also goes on to say in the wiring tracks
> that I have no O2
> sensor or ICU or any of those goodies. Which screws
> me up even more.
>
> I'm now using the diagram from an '81 Jetta. It has
> the O2 sensor, O2
> computer and all that jazz. I'm only assuming the
> electrical system is
> exactly the same. I don't see why it shouldn't. Both
> cars were produced in
> Germany using the same electronics.
>
> > Last thing. Do all you dash lights and acc.
> come
> >on? ie fuel gauge, oil warning, water over temp
> light
> >and alternator light. If these don't work you may
> >have some power routing problems.
>
> HAHA! Everything works, except the following:
>
> If I turn the key to the on (15) position, the
> following things happen:
>
> OXY light doesn't light
> The alternator charging light doesn't come on,
> The coolant temp round blinking LED sometimes blinks
> twice and fades, or it
> blinks like 5 times (what it normally should) and
> stops blinking abruptly
> (like it should)
>
> Well, ok, they sometimes come on. Sometimes after
> trying to start the car.
> Sometimes never.
>
> The fuel pump will not prime, nor will the fuel pump
> relay click after the
> pump is done priming.
>
> One relay clicks as the key turns.. I'm assuming
> it's the load reduction
> relay.
>
> Now, the car has an Oxygen Sensor relay from the
> car's old CIS system. Since
> I put in the 16v 1.8l with the whole CIS-E deal,
> what is the ultimate fate
> of this O2 relay and related components?
>
> I'm going outside again now to test and retest each
> component and check
> continuity of every wire I can find.
>
> Besides, the registration on my Oldsmobile runs out
> today, and the
> Scirocco's still registered. Which means I have
> about 4 hours of daylight to
> get this car to run or I'm driving illegally.
>
> -Dave (on a mission)
> '81 Scirocco 16v
>
>
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