Rev limiter

4.2 V8 32v Naturally Aspirated - 414 bhp
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BenHol
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Rev limiter

Post by BenHol » Tue Mar 28, 2017 8:33 pm

Just been out to the Shop and when having a blast home my rev limiter kicked in at 6500 rpm. Oil was all up to temp and "limited revs to 7000" had gone off the screen.

The only reason I could see was I am low on fuel but would that cause the limiter to kick in early?
RS4 B7 - Phantom Black, 20in RS6 C7 alloys, Joey mod, detango, led drl, black optics, Bilstein b16, Michelin ps4s, centre res delete, black tips, 8mm spacers, vx lenses, RS embossed xenon, Carbon splitter, 034 ARB.

marc1
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Re: Rev limiter

Post by marc1 » Tue Mar 28, 2017 9:16 pm

Coil packs.

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BenHol
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Re: Rev limiter

Post by BenHol » Wed Mar 29, 2017 9:31 am

Just filled up at Shell, and all back to normal 8k limit. looks like the engine limits the revs once the fuel light come on. :beerchug:
RS4 B7 - Phantom Black, 20in RS6 C7 alloys, Joey mod, detango, led drl, black optics, Bilstein b16, Michelin ps4s, centre res delete, black tips, 8mm spacers, vx lenses, RS embossed xenon, Carbon splitter, 034 ARB.

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sar
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Re: Rev limiter

Post by sar » Wed Mar 29, 2017 10:31 am

BenHo wrote:
Wed Mar 29, 2017 9:31 am
Just filled up at Shell, and all back to normal 8k limit. looks like the engine limits the revs once the fuel light come on. :beerchug:
errr no it doesn't.
if the revs were limited to 6500 it was doing it for a reason, get it scanned with VCDS it will have logged the issue.
b7rs4 phantom black, titan pack.

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BenHol
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Re: Rev limiter

Post by BenHol » Wed Mar 29, 2017 10:57 am

I went for a drive before filling up and had the same symptoms as yesterday, then filled up and all ok. So suggests it was something to do with the low fuel. If there was another error on the car would I of had a warning message on the dash?
RS4 B7 - Phantom Black, 20in RS6 C7 alloys, Joey mod, detango, led drl, black optics, Bilstein b16, Michelin ps4s, centre res delete, black tips, 8mm spacers, vx lenses, RS embossed xenon, Carbon splitter, 034 ARB.

irn_bru_ce
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Re: Rev limiter

Post by irn_bru_ce » Thu Mar 30, 2017 9:15 am

There is definitely no connection with the fuel light being on and the revs being limited, there must be another factor at play
Current - 07 Avus Silver B7 RS4 Avant : Ceramics, Non Valved Non Res Milltek, K&N filter, SS+, adaptive xenons, black optics, KW3, 034 rear ARB, rear drop links & front adjustable top arms.
Past - 00 Saxo VTS : 266mm Mi16 calipers, Quaife ATB, 20mm torsions bars, 24mm ARB, Vibratechnics mounts
87 Vauxhall Belmont: 1.6L, 15" rockford fosgate subwoofer in 3 cuft sealed box, 5ch Rockford fosate amp, JBL components

KernowPete
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Re: Rev limiter

Post by KernowPete » Thu Mar 30, 2017 7:23 pm

Agree. With the fuel light on mine drives exactly the same as any other time.
2007 B7 RS4 Phantom Black Saloon - stock
Previous: Lightly modded Mondeo ST220 (great car), nothing else worth mentioning!

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BenHol
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Re: Rev limiter

Post by BenHol » Thu Mar 30, 2017 7:24 pm

Mmmm. Yea odd one. I'm not sure weather to be concerned or not as not lights came on the dash and it's driving fine now.
RS4 B7 - Phantom Black, 20in RS6 C7 alloys, Joey mod, detango, led drl, black optics, Bilstein b16, Michelin ps4s, centre res delete, black tips, 8mm spacers, vx lenses, RS embossed xenon, Carbon splitter, 034 ARB.

marc1
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Re: Rev limiter

Post by marc1 » Thu Mar 30, 2017 9:13 pm

For me, early warning signs that something might not be running correctly is exactly the right time to try and resolve. Ignore it and the end result could be worse.

Warning lights on the dash are pretty basic. You either need the VCDS software to read the ECU or take it to a VAG specialist garage that has it so they can read the fault codes and give you a print out. Alternatively if you post up that you need a fault code scan and your aproximate location, a forum memember might be able to do it for you.

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