[V8] UPDATE Engine Trouble (v6 - but still Audi)

Sun Oct 25 11:47:07 PDT 2009

It's propably near the bell housing, heres an image of the sensor 
itself (doesn't show the location though). Number 28 in that picture.
http://etka.auto2.ru/epc/cat/au/A80Q/1995/161/57/1878610/#30

>----Alkuperäinen viesti----
>Lähettäjä: wilke_jb at yahoo.com
>Päivämäärä: 25.10.2009 20:20
>Vastaanottaja: "Tony and Lillie"<tonyandlillie1 at earthlink.net>, "V8 
list"<v8 at audifans.com>
>Aihe: Re: [V8] UPDATE Engine Trouble (v6 - but still Audi)
>
>Thanks for the info, I'm in souther West virginia.  I did get a code 
it was 4444 - or no trouble codes set.  I'm going to check the crank 
sensor, like many have mentioned - where is it?  I know it is probably 
under the front pulley or on or near the bellhousing.  Any general 
direction would be great.  I know that oil went everywhere down there - 
it was even up on the the timing belt cover (outer) because of that 
spraying gasket - maybe a sensor got shorted because of the oil spray?  
Just a thought.  Thanks.  
>
>--- On Sun, 10/25/09, Tony and Lillie <tonyandlillie1 at earthlink.net> 
wrote:
>
>> From: Tony and Lillie <tonyandlillie1 at earthlink.net>
>> Subject: Re: [V8] UPDATE Engine Trouble (v6 - but still Audi)
>> To: "ville.hiivola at suomi24.fi" <ville.hiivola at suomi24.fi>, 
v8 at audifans.com
>> Date: Sunday, October 25, 2009, 11:32 AM
>> Correct. If you have a completely
>> dead ECU, you will have no communication. That's quite
>> commonly seen on later VAG procucts in both the trans
>> computers (water in the passenger floor) and ABS modules.
>> You get no communication and no codes.
>> 
>> Having said that, it is possible for one portion of the ECU
>> to go bad. But, it's not that common. However, it did happen
>> to my V8Q. In that case, the ECU could not see the engine
>> coolant temp sender signal to adjust the mixture, so it
>> started VERY poorly. I checked everything out, and in the
>> end replaced the ECU. Problem solved.
>> 
>> In regards to the V6 vs VR6, there are similarities.
>> However, the basic engine hardware is completely different.
>> The 2.8 12V V6 in the Audi's is a conventional v-6 with
>> seperate cylinder heads and a timing belt on the front of
>> the engine. The 2.8 12v VR6 is a 15degree v-6 with one
>> cylinder head bolted to the single head deck surface. It
>> uses a timing chain, mounted at the rear of the engine, as
>> do all the VR6 engines.------However, these engines were
>> both produced at about the same time, and both use very
>> similar Bosch Motronic engine control systems. So, a lot of
>> the basic troubleshooting is the same.
>> 
>> As for checking the crank position sensor, pull the plug to
>> it and ohms check it. Just like on the V8Q, two of the
>> terminals (I think the outside) should measure about 1000
>> ohms. If not, it's fried. BTW, I'll agree that no spark and
>> no fuel points in that general direction. The ECU is more
>> than likely not seeing a signal that it needs for the engine
>> to run, and therefore is not producing the feedback of fuel
>> and spark. I'd be looking at the crank and cam postion
>> sensors first, then checking the wiring to the ECU from
>> those sensors. Also, depending on how hot the engine got
>> (not very from the sounds of it) you may want to give it a
>> good lookover for any melted/burned wires.
>> 
>> Jason, where are you located?
>> 
>> Tony
>> 
>> 
>> 
>> >Subject: [V8]  UPDATE Engine Trouble (v6 - but
>> still Audi)
>> >
>> >I wouldn't suspect a totally dead ECU, since he was
>> able to read codes, 
>> >right?
>> >
>> >>----Alkuperäinen viesti----
>> >>
>> >>Jason Wilkerson wrote:
>> >> > What would cause no spark and no fuel? 
>> Thanks.
>> >>
>> >>Another guess: no spark and no fuel points to the
>> ECU not letting 
>> >that happen. 
>> >>It could be the ECU doesn't get a signal from the
>> CPS, and so isn't 
>> >letting fuel 
>> >>and spark happen. It could be the ECU is dead
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