[V8] Audi V8 - we build excitment! (Woes of V8 ownership)

Ingo Rautenberg i.rautenberg at waratap.com
Thu May 11 08:04:28 EDT 2006


Kneale is correct.  Check engine light will come on when the knock  
sensor is malfunctioning or on for an abnormally long time among  
other things.

Ingo

On May 11, 2006, at 6:58 AM, Kneale Brownson wrote:

> I think what you have here is the same type of situation as the red  
> brake
> light that will come on because of several different anomalies,  
> such as bad
> bomb, parking brake lever not all the way down,  low brake fluid, low
> hydraulic oil, etc.  The check engine light responds to a number of
> sensors, not just the O2 senson.
>
>
> At 11:03 PM 5/10/2006 -0700, Greg Furstenwerth wrote:
>> The O2 sensor light is the check engine light. Thats what it is.... I
>> know this for a fact due to my O2 sensor wire getting ripped in  
>> half by
>> the front driveshaft. At anyrate when it got ripped in half check  
>> engine
>> came on once it was fixed it was off. O2 sensor is directly  
>> related :)
>>
>> Carter Johnson wrote:
>>> Stupid question, but wouldn't an oxygen sensor throw the OXS  
>>> light instead
>> of the check engine light?
>>>
>>>   I mean, what's the point of the OXS light then?
>>>   Carter
>>>
>>> Ingo Rautenberg <i.rautenberg at waratap.com> wrote:
>>>           Carter,
>>>
>>>   Hmm.  Methinks it's a OXS sensor problem (or related wiring).  The
>> resistance values tell the computer to dump more fuel (had it with  
>> the
>> 5-speed), but if the wiring has been cut or somehow compromised,  
>> the correct
>> values will never be obtained.  Instead, you'll be washing the  
>> cylinder
>> bores with fuel, fumigating the cars behind you, and emptying your  
>> wallet.
>> I'd disconnect the signal (black) wire from the OXS and see what  
>> happens.
>> Then I'd check fro compromised wiring and repair/replace oxs  
>> sensor.  If
>> that doesn't do it, it could well be the  temp sensor below the  
>> pass side
>> distributor (but that should give a code).
>>>
>>>   HTH
>>>
>>>   Ingo
>>>     ----- Original Message -----
>>>   From: Carter Johnson
>>>   To: Ingo Rautenberg ; v8 at audifans.com
>>>   Sent: Wednesday, May 10, 2006 4:46 PM
>>>   Subject: Audi V8 - we build excitment! (Woes of V8 ownership)
>>>
>>>
>>>   Ah Ingo, how right you are.
>>>
>>>   So, my latest (3000 mile) problem:
>>>
>>>   I'm driving along, I smell raw, unburned or partially burned fuel,
>> immediately check engine light comes on, and milage drops to ~14  
>> mpg at
>> best.  Driving is uneffected, from what I can tell.  This comes  
>> and goes,
>> but in the last 3000, it's mostly been there.
>>>
>>>   Any thoughts?
>>>
>>> My guess: Engine thinks it is running lean (knock sensor  
>>> malfunctioning?)
>> and dumps fuel into the motor.
>>>
>>>   This coincided with the changeover to Ethonol "summer gas",
>> interestingly, and at the same time my cousin's S4 started running  
>> rather
>> poorly (perhaps unrelated, but it wouldn't surprise me if the gas  
>> was to
>> blame).
>>>
>>>   At 3+ a pop for a gallon, it would be nice to be back around  
>>> 21mpg, but
>> not if it's a 1,000$ sensor.
>>>
>>>
>>>   Carter
>>>
>>> Ingo Rautenberg <i.rautenberg at waratap.com> wrote:
>>>   As Mike Arman would say, "Not just a car, its an ADVENTURE!"
>>>
>>> ;-)
>>>
>>> ----- Original Message -----
>>> From: "Carter Johnson"
>>> To:
>>> Sent: Wednesday, May 10, 2006 4:22 PM
>>> Subject: [V8] shiftlock
>>>
>>>
>>>
>>>> This JUST started happening in my car, as well - also a 93. Hmmmm.
>>>>
>>> Disconcening the first time it happened, for sure!
>>>
>>>> Carter
>>>>
>>>>
>>>> Message: 8
>>>> Date: Wed, 10 May 2006 14:32:55 -0400
>>>> From: Ingo Rautenberg
>>>> Subject: Re: [V8] ShiftLock problem..
>>>> To: ur32vquattro
>>>> Cc: v8 at audifans.com, Scott Baumann / PTS Power
>>>> Message-ID: <9DEDD3CA-AACE-4126-A1BA-C7DC45FFAC39 at waratap.com>
>>>> Content-Type: text/plain; charset=US-ASCII; delsp=yes;  
>>>> format=flowed
>>>>
>>>> Which reminds me. On the '93, it seems half the time when I move  
>>>> the
>>>> shifter to park, I find that the key won't release and then the
>>>> reason: The shifter does not pop up at the end. Quick lift on the
>>>> knob and the ignition is unlocked.
>>>>
>>>> Ingo
>>>>
>>>>
>>>>
>>>>
>>>> W. Carter Johnson
>>>> SileStone/Counterfitt of RI
>>>> 401-789-3217 home
>>>>
>>>> ---------------------------------
>>>> Get amazing travel prices for air and hotel in one click on Yahoo!
>>>>
>>> FareChase
>>>
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>>>>
>>> contributions welcome!
>>>
>>>
>>>
>>>
>>>
>>> W. Carter Johnson
>>> SileStone/Counterfitt of RI
>>> 401-789-3217 home
>>> ---------------------------------
>>>   Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously  
>>> low rates.
>>>
>>>
>>> W. Carter Johnson
>>> SileStone/Counterfitt of RI
>>> 401-789-3217 home
>>> 		
>>> ---------------------------------
>>> New Yahoo! Messenger with Voice. Call regular phones from your PC  
>>> and save
>> big.
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>> contributions welcome!
>>>
>>>
>>
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>> Have a V8 answer? ... Please help others by adding to the KB ... all
>> contributions welcome!
>
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> Have an Audi V8 question?  Check the Audifans Knowledgebase!
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> Have a V8 answer? ... Please help others by adding to the KB ...  
> all contributions welcome!



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