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Warm Start Problem with 200 TQ (when it is very cold)
In message <34C1861E.367B@mmmpcc.org> "Fred L. DeRoos" writes:
> I'll try this test and see what happens. I have three brown wires
> attached to the intake manifold. I've checked them and they are clean
> (not corroded) and have essentially 0 ohms resistance to other grounded
> parts of the car, e.g., alternator frame, etc.
Doesn't necessarily mean a thing. It's their resistance back to the ECU
connector that's important.
> >>If it starts more easily, wait until you can repeat the test - but
> >>this time pull the connector off the warm-up regulator before testing.
> Do I then run the fuel pump for another 30 seconds with the connector
> off the warm-up regulator before trying to start? Or just remove the
> connector from the warm-up regulator before trying to start? I think
> you mean this.
No, the former. The heater in the warm-up regulator is hard-wired in parallel
with the fuel pump. During the first test, you will be doing two things:
repressurising the fuel system, and heating the warm-up regulator. The idea is
to do a complete repeat for the second test _without_ heating the warm-up
Committee Member, UK Audi [ur-]quattro Owners Club