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

[Fedor Veenhuyzen]

Hi Shiv..
I checked all 3 temp sensors, as I had a few spares...no
difference, the car still runs too rich and misfires above 1700 RPM's....I
disconnected the oxigen sensor, same thing...
The key thing is I think, the misfiring above 1700 rpm...I am starting to
think it must be the fuel regulator...
BTW, I noticed a crack in one of my knock sensors, could that be it?
Anyway thank you very much for your input so far...

----- Original Message ----- 
From: "Shiv" <quattro_k at yahoo.com>
To: "Fedor Veenhuyzen" <id at wxs.nl>
Sent: Friday, December 26, 2003 3:45 AM
Subject: Re: [V8] V8 suddenly running like a coffee grinder above 1700 rpm


> Hi.
> 
> No, the temperature sensors are all different.  Even
> the dealer will have trouble finding one for you.  I
> wouldn't recommend you put a used on on your car as
> the same thing can reoccur, but if its just to get you
> moving again, then its a good idea.
> 
> Each sensor has a different color, and has different
> number of pegs or pins on the end.  They all report
> different findings to the ECU.
> 
> You need to match the one that's bad with one that is
> of the same color, size, and number of pins.  
> 
> They aren't expensive at the dealer, bring them the
> old one and they should be able to help you if you
> don't have one to spare.
> 
> Good luck.
> 
> --- Fedor Veenhuyzen <id at wxs.nl> wrote:
> > Ok thank you Shiv, that makes sence to
> > me...hopefully I can find an old
> > spare temp sensor somewhere in my V8 spares box. I
> > think I might have a few
> > old ones to try out tomorrow. As everything is
> > closed here for the
> > hollidays. Do you know if they are all the same?
> > For now I am going to bed, I hope to read your reply
> > in the morning.
> > Enjoy the rest of your evening, and once again
> > thanks alot!
> > Fedor
> > ----- Original Message ----- 
> > From: "Shiv" <quattro_k at yahoo.com>
> > To: <v8 at audifans.com>
> > Sent: Friday, December 26, 2003 1:19 AM
> > Subject: [V8] V8 suddenly running like a coffee
> > grinder above 1700 rpm
> > 
> > 
> > > The ECU uses the coolant temperature sensor to
> > monitor
> > > engine coolant temperature as well as the rate of
> > > change in coolant temperature.  This information
> > is
> > > sent to the ECU, in order to determine the
> > air/fuel
> > > mixture required to make the car run at a given
> > > temperature.  Your car may be running like crap
> > > because the ECU is getting a bad temperature
> > reading
> > > from the sensor.  The wrong signal is always being
> > > given.  Your car isn't operating correctly in cold
> > or
> > > normal temperatures because the ECU doesnt know
> > the
> > > temperature of the coolant anymore...it has no
> > idea
> > > what kind of fuel / air mixture needed until that
> > > sensor is replaced....IF that is infact your
> > problem.
> > > Remember, the fuel pressure regulator can also be
> > at
> > > fault.
> > >
> > > Good luck!
> > >
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> > 
> 
> 
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