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Author Topic: Idle problem  (Read 2428 times)

Offline Greeraidan

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Idle problem
« on: 27 April 2015, 07:40 »
Hi everyone.. I bought a mk4 1.8t this weekend.. It needs a little bit of work but the main problem is it jumps up and down revs when idling, I know the exhaust is blowing so planning on getting a new one this week does anybody have any ideas what it could be if it's not the blowing exhaust?
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Offline itavaltalainen

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  • VCDS and VCP - fault codes, coding, VIM activation
Re: Idle problem
« Reply #1 on: 27 April 2015, 16:24 »
Get it scanned for fault codes....

Otherwise it might be a stab in the dark.

Where are you based?
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2019 Seat Leon ST FR DSG 135kW - eclipse orange - 23k miles

Offline Greeraidan

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Re: Idle problem
« Reply #2 on: 27 April 2015, 20:32 »
I'm in Bradford, West Yorkshire..
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Offline itavaltalainen

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Re: Idle problem
« Reply #3 on: 27 April 2015, 21:39 »
Bit far for me and not heading up that way for work in near future....
See if you can find someone more local to do a full auto scan on all control units for you ( https://maps.google.co.uk/maps/ms?msid=209563024277134815192.0004c505be14b22419dbe&msa=0&dg=feature )
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2019 Seat Leon ST FR DSG 135kW - eclipse orange - 23k miles

Offline LeeOxley

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Re: Idle problem
« Reply #4 on: 02 June 2015, 17:18 »
Chances are it's a Throttle Body issue, may need cleaning or just renewing, or it could be as simple as the MAF sensor. Unplugged mine the other day to try a scooby air filter and revs bounced from 300- to 1400 constantly. How bad is the jumping?
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