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Author Topic: bad mis- fire on cold start  (Read 1403 times)

Offline streetbeef

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bad mis- fire on cold start
« on: 23 February 2012, 14:08 »
Hey guys, my gti has never felt right since changing my maf, its a new genuine bosh one, and since changing it I have taken the cone filter off and now have a standard airbox on and it runs much better. Bit this morning it misfired badly on cold start and feels like it has no power under 2k revs! After 2 k its fine and boosts up well! No fault codes present, any ideas would be great!
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2000 indigo blue golf gti AUM, full oe r32 kit, xenon headlights, r32 wheels, r32 interior trims,steering wheel,pedals and foot rest, h&r springs, r32 milltek cat-back, stage 1 remap, forge diverter valve.

Offline richw911

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Re: bad mis- fire on cold start
« Reply #1 on: 23 February 2012, 14:10 »
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Offline streetbeef

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Re: bad mis- fire on cold start
« Reply #2 on: 23 February 2012, 14:14 »
I have scanned it mate, shows no codes at all  :huh:
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2000 indigo blue golf gti AUM, full oe r32 kit, xenon headlights, r32 wheels, r32 interior trims,steering wheel,pedals and foot rest, h&r springs, r32 milltek cat-back, stage 1 remap, forge diverter valve.

Offline richw911

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Re: bad mis- fire on cold start
« Reply #3 on: 23 February 2012, 14:19 »
Quote from: streetbeef on 23 February 2012, 14:14
I have scanned it mate, shows no codes at all  :huh:

Ah sorry missed that - have you tried a TB clean?
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Offline streetbeef

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Re: bad mis- fire on cold start
« Reply #4 on: 23 February 2012, 14:27 »
I haven't mate no, in fact I was just reading that on the how to guide, may try it tomoz just finished doing a window regulator on another Mk4 need a rest now lol
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2000 indigo blue golf gti AUM, full oe r32 kit, xenon headlights, r32 wheels, r32 interior trims,steering wheel,pedals and foot rest, h&r springs, r32 milltek cat-back, stage 1 remap, forge diverter valve.

Offline richw911

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Re: bad mis- fire on cold start
« Reply #5 on: 23 February 2012, 14:31 »
Quote from: streetbeef on 23 February 2012, 14:27
I haven't mate no, in fact I was just reading that on the how to guide, may try it tomoz just finished doing a window regulator on another Mk4 need a rest now lol

Here the link http://www.golfgtiforum.co.uk/index.php?topic=87783.0

Your MAF could be a faulty new one not unknown for that to happen - if the TB doesn't help try unplugging the MAF to see how it runs with it disconnected (it will throw a code when you disconnect it)
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Offline streetbeef

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Re: bad mis- fire on cold start
« Reply #6 on: 23 February 2012, 14:40 »
I already had one faulty maf! I'm sure it was the stupid cone filter ruining them, hence why I have an oe airbox now, maybe the cone had already damaged the new maf before I put the airbox on yesterday?
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2000 indigo blue golf gti AUM, full oe r32 kit, xenon headlights, r32 wheels, r32 interior trims,steering wheel,pedals and foot rest, h&r springs, r32 milltek cat-back, stage 1 remap, forge diverter valve.

Offline richw911

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Re: bad mis- fire on cold start
« Reply #7 on: 23 February 2012, 17:32 »
Quote from: streetbeef on 23 February 2012, 14:40
I already had one faulty maf! I'm sure it was the stupid cone filter ruining them, hence why I have an oe airbox now, maybe the cone had already damaged the new maf before I put the airbox on yesterday?

Could well have done  :undecided:
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Offline streetbeef

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Re: bad mis- fire on cold start
« Reply #8 on: 23 February 2012, 19:06 »
thanks for the help mate, will see how i get on
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2000 indigo blue golf gti AUM, full oe r32 kit, xenon headlights, r32 wheels, r32 interior trims,steering wheel,pedals and foot rest, h&r springs, r32 milltek cat-back, stage 1 remap, forge diverter valve.

Offline richw911

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Re: bad mis- fire on cold start
« Reply #9 on: 23 February 2012, 19:28 »
Quote from: streetbeef on 23 February 2012, 19:06
thanks for the help mate, will see how i get on

Yeah let us know - is it a AGU engine?
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