[V6-12v] licence plate lights
James4ihl at aol.com
James4ihl at aol.com
Wed Feb 25 06:56:12 EST 2004
Finally got supplied with the correct fuel pump relay by my, ahem, trusty
Audi dealership. It hasn't made any difference to the hesitation, but the car
starts and accelerates a little better, so it was worth a shot, and was probably
due up for replacement anyway.
One thing I thought worthy of interest is that the original part has been
superceded by a slightly uprated relay, it's larger and the current handling
has been uprated (original part 30/20 Amps, new part 40/30 Amps) so maybe they'd
had problems with the older ones burning out or failing on this engine?
I'd like to hook the car up to VAG-COM, but first I need to buy it. Next step
is booking into my trusty mechanic for a fuel system/pressure regulator
pressure test, I think.
One reason for wanting to hook it up to VAG-COM though is that I've noticed
that a non-Audi dealer has adjusted the CO setting at some point. Call me
paranoid, but I now know that the dealer who sold me the car probably knew the cats
were on the way out (they rattled and failed soon after the 3 month warranty
period - go figure), and it's the same dealer who did the MOT emissions
test... A guess: they tweaked the CO, which is directly influenced by lambda
control, to lean it down to pass the test. Now, under choke, when the car is cold, or
under accelleration when you first put down your foot, since the CO may be
near to/ outside tolerance, the car is essentially "running out" of fuel. I'd
need to hook it up and check the mean values of CO content/vs. lambda control to
check and re-set this...
One other possibility: as mentioned before, the same (non-Audi) dealer
replaced the timing belt. I'll eat my grandfather's hat if they had access to the
special tools. If they got this slightly out (not enough to cause contact, mind
you), could that cause driving/ hesitation problems?
Cheers
James
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