Car won’t start.

4.2 V8 40v biturbo - 450 bhp
4.2 V8 40v biturbo - 480 bhp (plus)
steve2003rs6
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Re: Car won’t start.

Post by steve2003rs6 » Sat Mar 19, 2022 9:39 am

Cheers Ben. It will be interesting to see if the car starts this morning. Fingers crossed.
Will get the sensor changed asap.

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Shoppinit
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Re: Car won’t start.

Post by Shoppinit » Sat Mar 19, 2022 9:50 am

Check the temps with VCDS first. Then see how they evolve as the engine warms up.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

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Capt Ric
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Re: Car won’t start.

Post by Capt Ric » Sat Mar 19, 2022 10:35 am

Hope all is well steve.
Be, as always you are amazing!
Now I'll go and see if mine will start!

steve2003rs6
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Re: Car won’t start.

Post by steve2003rs6 » Sat Mar 19, 2022 11:07 am

Hi Ric nice to hear from you mate.

Ok so car started on 2nd attempt. Went and drove it to give it a run/fill up with fuel.
Battery charge is at 13v with engine running. Usually sits at 14v.
Fans seem to be running a lot more than usual.
If fact they are constantly running.
Also after switching off the fans remain running for ages.
Time to check what the temps are with VCDS
Just hoping that all the cranking hasn’t damaged the starter/alternator.

steve2003rs6
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Re: Car won’t start.

Post by steve2003rs6 » Sat Mar 19, 2022 11:49 am

AA8E99EC-A29D-4E57-8F1F-77685321F86C.jpeg
8369A3C9-00F5-48AF-88F5-95C95857FEA1.jpeg
Bingo. Thank god for VCDS.
Now to get a sensor and get it fitted asap

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Shoppinit
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Re: Car won’t start.

Post by Shoppinit » Sat Mar 19, 2022 11:54 am

There you go. Nice easy fix.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

steve2003rs6
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Re: Car won’t start.

Post by steve2003rs6 » Sat Mar 19, 2022 12:17 pm

Checked out the Merle and Beru sensors o ring and clip.
All have the same part numbers with the seal part number being N903 168 02.

Audi say it’s N903 168 01.

Ordered sensor seal and clip from Audi which should arrive on Tuesday.

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Shoppinit
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Re: Car won’t start.

Post by Shoppinit » Sat Mar 19, 2022 12:50 pm

You going to fit it yourself?
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

steve2003rs6
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Re: Car won’t start.

Post by steve2003rs6 » Sat Mar 19, 2022 1:04 pm

Don’t know how. Currently on the laptop trying to locate it mate.
Then give it a good spray with wd40.
To assist in removal.

Ps was you offering to do it Ben ????????

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Shoppinit
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Re: Car won’t start.

Post by Shoppinit » Sat Mar 19, 2022 1:09 pm

No thanks. I've still got the scars on my hand from the last one I did.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

steve2003rs6
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Joined: Mon Aug 19, 2019 7:43 pm

Re: Car won’t start.

Post by steve2003rs6 » Sat Mar 19, 2022 1:13 pm

Are they easy to locate. I presume rear of engine somewhere.
Not been able to see much on the sensor location on a 4.2 on the internet.

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Shoppinit
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Re: Car won’t start.

Post by Shoppinit » Sat Mar 19, 2022 1:19 pm

https://www.flickr.com/photos/surgenor/ ... 29/detail/

Click on each photo for instructions. Malcolm says the airbox doesn't need to come off. I'm slightly surprised at this, but gotta trust what he says.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

steve2003rs6
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Posts: 2956
Joined: Mon Aug 19, 2019 7:43 pm

Re: Car won’t start.

Post by steve2003rs6 » Sat Mar 19, 2022 1:39 pm

Cheers for that mate.
Will now go and give it a few squirts of wd40.
Is it ok to still use the car on short trips.
Or should it be mothballed until the new sensor is fitted.

I know that the fans will be on constantly.

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Shoppinit
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Re: Car won’t start.

Post by Shoppinit » Sat Mar 19, 2022 1:40 pm

Fuelling will be incorrect to a certain extent. You might flood it again. I personally wouldn't.I'm surprised it's not a stocked part at your Audi dealer.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

steve2003rs6
Cruising
Posts: 2956
Joined: Mon Aug 19, 2019 7:43 pm

Re: Car won’t start.

Post by steve2003rs6 » Sat Mar 19, 2022 1:51 pm

Yes me too. Whenever you want a part it appears that they have to order it. They are about a quarter of a mile down the road. But sooooooo expensive for labour.

Might go and connect VCDS and clear the logged fault and see what that does if anything.
Even with key position 1 (engine not running) the fans will be running.

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