Audi 90 running on few cylinders

[Andy Thibodeau]

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I've done that in the past, got a code that equated to timing fully retarde=
d=2E  But why would code/light go away on hot restart?  Open, frayed, broke=
n, nicked, or any other not-so-watertight wire on the 02 sensor circuit?  I=
 thought that the O2 sensor did not send data to the ecu till fully hot, th=
is condition happens within 15sec of start.  When at WOT does the ecu liste=
n to the knock sensor?


                                                                           =
                  Thanks in Advance,
                                                                           =
                    Andy '88 90Q
  ----- Original Message -----
  From: Robert Myers
  To: Andy Thibodeau ; Definitely Bill Lockwood ; quattro at audifans.com
  Sent: Thursday, August 07, 2003 6:35 PM
  Subject: Re: Audi 90 running on few cylinders



  How about pulling the codes and finding out what that check engine light =
is trying to tell you?

  At 06:06 PM 8/7/2003, Andy Thibodeau wrote:


    I've been living with this same problem in my '88 90Q for  about 2 year=
s,
    and wondering the whole time what the problem is.  Car cold starts grea=
t,
    idles just fine, but when you get out of the driveway it starts to spit=
 and
    fart.  Idle is still good at this point, check engine light is on, spit=
s and
    farts while depressing accelerator (under load), runs OK at constant
    throttle position, but rips at WOT.  This whole problem never happens o=
n a
    good hot start, and does not go away if driven to any distance.  What I=
 have
    been doing is shutting the car off (after 20-30 min of driving) while
    coasting and then restart, match revs, and engage clutch, this seems to=
 get
    rid of my check engine light and poor performance.  I have long suspect=
ed
    ignition wires, but any other ideas are welcome.



    Thanks in Advance,

    Andy '88 90Q
    ----- Original Message -----
    From: "Definitely Bill Lockwood" <wlockwoo at zoo.uvm.edu>
    To: <quattro at audifans.com>
    Sent: Thursday, August 07, 2003 5:10 PM
    Subject: Audi 90 running on few cylinders


    > My roommates 88 Audi 90 Q started to run on just a couple of cylinder=
s the
    > other night.  Until you push the gas pedal all the way down, then the=
 car
    > will run with all cyl, full power.
    >
    > So car idles on one or two cyl, but runs at full throttle.
    >
    > Any suggestions???
    >
    > BTW it was raining when it happened.
    >
    > Thanks,
    > Bill
    >
    >



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  *****
   Robert L. Myers  304-574-2372
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