[V8] Re: V8 suddenly running like a coffee grinder above 1700 rpm

[Fedor Veenhuyzen]

First of all, Happy and a Great 2004, with lots of enjoyment in driving our
Audi's!

Well guys, here's an update. I took the v8 to a dealer that was so
"friendly" to hook it up to their comp. for the nice sum of 70 euro...I hate
those buggers, but what can one do?
Its read out was: G40 Hall sensor and G4 Ignition reference sensor. Thats
all, no failures in my AT ECU thank God!
I imidiately ordered the G4 which arrived the next day. The dealer said that
most probably nothing was wrong with the Hall sensor...could that be
correct?
And further more, in my point of view it doesn't really make sense that the
G4 and G40 are gone, and the car still can run, although only up to 1700
rpm. As far as I know, either one of those failures would make it impossible
to start....Can anyone please enlighten me?
I haven't been able to renew the reference sensor yet, because at just that
day I got a vicious fleu (like most of us here in Holland at the moment),
and today is the first day that I finally found some energie to sit down at
the pc. Hopefully I'll be able to do something tomorrow, if the snow has
disappeared after the rain....yes yes, I have to work outside on my beloved
v8!!
A few more things that have kept my mind going....how fullproof is a comp
reading? I mean, could it be possible that the airmass unit is broken, and
would show up in the diagnoses? Or for that matter any other sensor....
And would a faulty fuelpressure regulator be the cause of my engine flooding
above 1700 rpm, and make it impossible to go above 70 km/h (45m/h)?
Hopefully some of you will have some good ideas for me when I get up in the
morning, I can really use some good news. Btw, the reference sensor here in
Holland costs 141 euro's including tax at the dealer, for who is interested.

Fedor
89 V8
----- Original Message ----- 
From: "Gene Caldwell" <gene.ghc at verizon.net>
To: "Fedor Veenhuyzen" <id at wxs.nl>
Sent: Saturday, December 27, 2003 7:27 PM
Subject: Re: [V8] Re: V8 suddenly running like a coffee grinder above 1700
rpm


> You're probably right.  MAF went bad at around 110K during watch of PO.
> His dealer performed a system response test and found the old one was
> "slow".  New MAF and all was well again.
>
> -Gene
> 90 V8
>
> Fedor Veenhuyzen wrote:
>
> >First of all, thanks for all your input to everyone! It warms me to see
that
> >so many make an effort to help out...thanks alot!
> >Well I spent another (3rd) afternoon working on the v8...but...as you can
> >guess, no change. I started to disconnect the battery for about 15
minutes,
> >hoping it might reset the ecu. Then I took out the KS on the drivers side
to
> >see how bad it was cracked. Well the plastic housing was cracked
completely,
> >but I don't think that would be a real problem. The KS itself is made of
> >metal, and it didn't look damaged, but one never knows....
> >I checked all the wiring again, and the connectors, but couldn't find
> >anything there either...took all the easy accessable sensors out, cleaned
> >them.
> >Anyway, comming monday I'll be able to go to a dealer to connect the car
to
> >a computer...hopefully we'll be able to find something. Its about a 50
miles
> >drive...haha, and I won't be able to take the freeway...
> >This is a tip from Joel, and I am putting my hope on that...
> >
> >Mass air flow sensor.
> >Tell you what happened to me and why I think it is that.  I took
everything
> >off to replace my TPS, and when I put it back together, it wouldn't run
> >right about, surprise, 1700 rpm.  Revved like a mutha up until that
point.
> >Took it apart, put old TPS back on, still didn't matter.  I went to
tearing
> >everything apart, and when I was going to take the MAF out (I had cleaned
> >it), I realized that I hadn't plugged it back in.  (Color me
embarrassed!)
> >I don't know, but it sounds like it might need to be cleaned, a wire went
> >out, or it needs replacing.
> >
> >
> >Joel Liggins
> >'90 V8q
> >'86 5kcstq
> >
> >Fedor
> >'89 V8
> >
> >
> >
>
>