Urgent help road trip tomorrow and really rough idel

4.2 V8 40v biturbo - 450 bhp
4.2 V8 40v biturbo - 480 bhp (plus)
jamespdfunge
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Urgent help road trip tomorrow and really rough idel

Post by jamespdfunge » Thu Sep 12, 2013 7:38 pm

Hey Guys,

I appreciate this might be a bit of a how long is a piece of string question but I need urgent help.

When I started my car up from work today i had a really high idle 2k, drove fine all the way home. Then when I got home a re-started and idle is really lumpy. Now this would not be such a massive issue if I wasnt travelling to cornwall tomorrow PM.

I have hooked up the Vagcom and cleared a load of codes (flat battery a few weeks ago). The only code I could see was a bank running lean but no other codes. but no codes have returned.

Can anyone give any advice at all, would really appriciate it!

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chunky79
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Re: Urgent help road trip tomorrow and really rough idel

Post by chunky79 » Thu Sep 12, 2013 7:43 pm

Flat battery? Wonder if the throttle body needs re-aligning? Have you had the air filter box off recently?
previous- Pug 205 gti, 306 gti, 309 gti Goodwood.
Audi S3, S4 V8 avant.
Porsche Macan Turbo.
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Now - Empty garage

If you don't know where you're going, any road will take you there!

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Shoppinit
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Re: Urgent help road trip tomorrow and really rough idel

Post by Shoppinit » Thu Sep 12, 2013 8:00 pm

Probably an air leak. What's your air flow at idle?
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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Re: Urgent help road trip tomorrow and really rough idel

Post by jamespdfunge » Thu Sep 12, 2013 8:01 pm

no nothing has been off, funny the flat battery was weeks ago so shouldnt really have an effect. I wonder if MRC could see me first thing?

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Re: Urgent help road trip tomorrow and really rough idel

Post by jamespdfunge » Thu Sep 12, 2013 8:02 pm

havent checked the air flow at idle, need to put the baby to sleep first :-) What should it be mate?

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Shoppinit
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Re: Urgent help road trip tomorrow and really rough idel

Post by Shoppinit » Thu Sep 12, 2013 8:04 pm

About 5g/s per bank if memory serves. No less than 3, anyway. I'm betting on something simple like a vac leak or bad MAF.
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."

jamespdfunge
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Re: Urgent help road trip tomorrow and really rough idel

Post by jamespdfunge » Thu Sep 12, 2013 8:05 pm

if it is a bad maf is that something that mainsteelers usually stock or Euro's

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Shoppinit
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Re: Urgent help road trip tomorrow and really rough idel

Post by Shoppinit » Thu Sep 12, 2013 8:12 pm

You can get them at lots of places. Make sure you get genuine Bosch. Bosch remanufactured is fine, too. But gotta be genuine. Not answering any more questions until you sort your punctuation out.
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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chunky79
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Re: Urgent help road trip tomorrow and really rough idel

Post by chunky79 » Thu Sep 12, 2013 8:35 pm

Stroppy sod.
previous- Pug 205 gti, 306 gti, 309 gti Goodwood.
Audi S3, S4 V8 avant.
Porsche Macan Turbo.
Gone but NEVER forgotten - C5 RS6 Misano red avant.

Now - Empty garage

If you don't know where you're going, any road will take you there!

jamespdfunge
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Re: Urgent help road trip tomorrow and really rough idel

Post by jamespdfunge » Thu Sep 12, 2013 8:45 pm

lol, you try typing with a crazed 10 month old in your arms whilst trying to eating dinner!!!!!

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Re: Urgent help road trip tomorrow and really rough idel

Post by jamespdfunge » Thu Sep 12, 2013 8:52 pm

right, hooked the Vag-Com up and the results are.
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Shoppinit
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Re: Urgent help road trip tomorrow and really rough idel

Post by Shoppinit » Thu Sep 12, 2013 9:17 pm

Bit low on bank one. What happens at 2k rpm?
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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Shoppinit
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Re: Urgent help road trip tomorrow and really rough idel

Post by Shoppinit » Thu Sep 12, 2013 9:19 pm

chunky79 wrote:Stroppy sod.
You love it really. Gets you moist.
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."

jamespdfunge
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Posts: 13
Joined: Tue Jun 18, 2013 9:44 am

Re: Urgent help road trip tomorrow and really rough idel

Post by jamespdfunge » Thu Sep 12, 2013 9:24 pm

Shoppinit wrote:Bit low on bank one. What happens at 2k rpm?
all good at 2k i think mate, why?

Do you think that the low reading on bank 1 could cause my issue?

jamespdfunge
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Re: Urgent help road trip tomorrow and really rough idel

Post by jamespdfunge » Thu Sep 12, 2013 9:25 pm

shall i take another reading at 2k?

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