[Vwdiesel] Quattro no start

[82 Diesel Westy]

I have a 90 Audi 200 that works that way, fuel pump
will not turn on until a sensor sees enough RPM on
flywheel.  I do not think an 84 VW Quattro was wired
that way, but if it has the slot for the fuse in top
of relay (my relay is stamped 215) then it most likely
is not running.  Put a 10amp fuse in, go to pre-start
on key for 10 seconds.  key off, remove fuse, try to
start again.

Bryan

--- MWoodland at Dentsply.com wrote:

> Loren,
> What model Quattro?
> 
> If the fuel pump relay is the same as mine, it has a
> place on top to accept
> a fuse. Inserting a fuse will bridge the 'safety'
> circuit and drive the
> fuel pump with ignition-on, as well as allow
> initiation of a diagnostic
> routine (5000 models, at least).
> 
> Otherwise, the pump should not turn on with the
> ignition, but will turn on
> when the engine is cranking hard enough to lift the
> F.I. metering plate.
> Once again, relative to model, lack of 'safety'
> interlock signal i.e.
> lifted metering plate, the ignition may also be
> disabled (not 100% sure,
> though I have found a no-spark condition
> coincidental with no lifted
> metering plate... (?)
> 
> I experienced a condition where a vacuum leak would
> not allow the plate to
> lift enough to fire the pump / injectors. I wired up
> a push button to fire
> the cold start injector, and once 'primed' and
> fired, the plate would lift,
> pump would be off and running, ignition firing, and
> there would be no
> discernible idle issues related to the leak. Check
> it out with a test
> light. I seem to recall that the hot to the CS
> injector is always hot with
> the ignition switch, and the ground is switched
> through the computer. In
> that case, your momentary PB would ground the
> circuit.
> 
> The leak was on the boot over the metering plate on
> a 5KTQ. There is a 90
> degree elbow from the side of the boot, THROUGH the
> inner fender, and back
> into the F.I air box, that can (and did) become
> disconnected inside the
> fender, accessible only by pulling the plastic inner
> fender. PITA.
> 
> If your FP relay does not have the jumper option,
> one can be pulled from a
> 5000.
> Either way, with the ignition on, and the 'boot'
> removed, lifting the plate
> (by the center nut with a pair of needle nose
> pliers) will fire the pump
> and the injectors will buzz audibly.  If not, its
> your pump, or relay.
> 
> For 'typical' ignition failures, check the 3-wire
> connection to the Hall
> sensor, on the side of the distributor.
> 
> First, though, check for fuel. If it 'seems' like no
> spark, and its
> cranking, then the plugs should be wet. If they're
> not, keep checking the
> fuel delivery.
> I kept the push button on the cold start inj., even
> after I fixed the
> issue, and it never let me sit again.  Ever.
> Also guarantees starts when vapor locked, or the
> check valve has 'checked
> out'.
> Good luck.
> Hope this helps.
> Mark
> 
> 
> 
> 
> 
> 
> Message: 4
> Date: Sun, 6 Aug 2006 23:23:21 EDT
> From: LBaird119 at aol.com
> Subject: [Vwdiesel] OT Quattro no start 3 hours away
> 
> :-(  Anybody have any experience on any "typical
> problems" or obvious place
> 
> to start?  Checked that the CIS fuse was good and in
> place, other fuses are
> 
> good so there's the basic test light stuff but any
> other suggestions?
> 
> 
> 
> ------
> 
> 
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Bryan Belman, Pt Pleasant, NJ
04 Jetta Wagon TDI PD, 100hp, 5sp   -- running :)
82 Diesel Westy 1.9NA               -- running :)
92 Jetta Eco-Turbo Diesel           -- not running yet <:>
90 Audi 200, 2.2L Turbo FWD         -- runs some times, need to sell :(
70 Type 1 stock Beetle              -- Not running well :(