Alternator question

4.2 V8 32v Naturally Aspirated - 414 bhp
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Nainoo
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Alternator question

Post by Nainoo » Mon Feb 09, 2015 8:18 pm

Hi gents,

Got the car washed and the red battery lamp came on and car went kind of dead. Only 0.5mile from Audi dealership as well :audibash:

Have done a search and not getting much back. How easy/hard is it to replace? Anyone ever had to get theirs replaced?

Any info would be great.

Cheers
Sprint Blue known as Blueberry Beast

Lukes3
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Re: Alternator question

Post by Lukes3 » Mon Feb 09, 2015 8:56 pm

Sure its just not the belt?
Current-saloon rs4,Full decat Xpipe miltek,cold air feed,BMC air filter, TTS supercharged, MRC stage 3 L/C F/S,hell s+s brake lines,AP racing rotors + vagbremtechnic bells, kw v3s clifford 650mk2

Gone-audi s3 8p stage2+ with loba lo400 turbo.

Nainoo
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Re: Alternator question

Post by Nainoo » Mon Feb 09, 2015 9:18 pm

I'm hoping it is. I''ll go check the now, where can I find the alternator as it is a tight engine bay so struggling a bit.
Sprint Blue known as Blueberry Beast

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SuprSi
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Re: Alternator question

Post by SuprSi » Mon Feb 09, 2015 9:44 pm

If it was the belt you'd know it, you'd lose the power steering.

It's towards the bottom front of the engine, best to get it on a lift off ramps and take the undertray off.
2003 C5 RS6 Avant Daytona Grey

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andyg72
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Re: Alternator question

Post by andyg72 » Mon Feb 09, 2015 10:20 pm

id say belt to had this on my R32 replaces belt no issues

rwilsonrs4
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Re: Alternator question

Post by rwilsonrs4 » Mon Feb 09, 2015 10:36 pm

incorrect, you won't lose the power steering , the only thing driven by the belt is the alternator , the power steering and everything else is driven from accessory drives from the rear of the engine , washing it shouldn't do any harm to the belt , they can handle a lot of water ,and at worst may slip a fe seconds , it mat be broken , by co incidence ,so look down the front of the engine and see if its still there or is damaged with bits missing from the ribs , it may a wiring issue or an internal fault with the alternator may be the issue a short inside the stator will flatten a battery in no time at all and will cause a lot of heat and possible catch fire , tho it didn't happen to you , did yo smell any hot melted plastic smell ?, its also water cooled so not a quick change out and is buried in the bottom RH side of the engine , and is likely horrendously expensive just to swap out , so best get it diagnosed by audi or a competent auto electrician
Phantom black saloon ,PES M112 Supercharged 520ps/595nm K&N filter, 100 cell milltek cats,res valved milltek system. 8 and 10mm H&R spacers.H&R roll bars, "smoke chrome " alloy refurb. JHM Quickshifter, Bilstein B16 coilovers , uprated diff mount ,50/50 devils own WM kit so 1.4 litres/min in intake approx 10% more power and torque
1/4 mile 12.01 secs 123.5mph

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SuprSi
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Re: Alternator question

Post by SuprSi » Mon Feb 09, 2015 10:46 pm

My bad, I forget the B7 RS4 is a different arrangement to the C5 RS6. Good luck sorting it :)
2003 C5 RS6 Avant Daytona Grey

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MikeFish
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Re: Alternator question

Post by MikeFish » Tue Feb 10, 2015 12:11 am

We have water cooled alternators? Even after 4.5 years I'm still learning stuff about this car!

rwilsonrs4
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Re: Alternator question

Post by rwilsonrs4 » Tue Feb 10, 2015 9:08 pm

Yeah its water-cooled , due to the high amp output and its buried in the engine bay very closely packaged , and it doesn't have a cooling fan
Phantom black saloon ,PES M112 Supercharged 520ps/595nm K&N filter, 100 cell milltek cats,res valved milltek system. 8 and 10mm H&R spacers.H&R roll bars, "smoke chrome " alloy refurb. JHM Quickshifter, Bilstein B16 coilovers , uprated diff mount ,50/50 devils own WM kit so 1.4 litres/min in intake approx 10% more power and torque
1/4 mile 12.01 secs 123.5mph

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