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Author Topic: mk4 gti failed mot today  (Read 1871 times)

Offline dopeydean

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mk4 gti failed mot today
« on: 12 May 2012, 17:12 »
hi all my 2000 golf gti mk4 failed the mot today only on immisions co2 is ment to read 3 and mine was reading 13 lol any idea,s like common faults ???????
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Offline Wazzzer

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Re: mk4 gti failed mot today
« Reply #1 on: 12 May 2012, 17:18 »
dead cat or lambda
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Offline navmk4gti

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Re: mk4 gti failed mot today
« Reply #2 on: 12 May 2012, 23:20 »
you dont have an mot "friend"  :lipsrsealed:

as said lambda sensor or you prob got it decated is it remapped as iv been told that throws up different readings too i never had prob with my previous AGU that was de- cated  :grin:
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Offline Wayne

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Re: mk4 gti failed mot today
« Reply #3 on: 13 May 2012, 00:11 »
Have you checked / scanned it for any codes.
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Offline dopeydean

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Re: mk4 gti failed mot today
« Reply #4 on: 13 May 2012, 20:12 »
put it on a diagnostics machine today came up with faulty lamba/slight missfire on more than 1 cylinder/temp sensor
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Offline Chris.

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Re: mk4 gti failed mot today
« Reply #5 on: 14 May 2012, 19:04 »
Start with the temp sensor.
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Offline dopeydean

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Re: mk4 gti failed mot today
« Reply #6 on: 14 May 2012, 21:07 »
replaced it today £8.50 was going to change the lamba but it a f@?>er to get out
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Offline Chris.

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Re: mk4 gti failed mot today
« Reply #7 on: 14 May 2012, 21:13 »
Not that hard if you know how ;)

Hammer the hell out of the area around the lambda (where the thread is in exhaust pipe) and then get your 21mm spanner and comes straight out.
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Offline dopeydean

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Re: mk4 gti failed mot today
« Reply #8 on: 15 May 2012, 18:49 »
took it to a local garage today just to see what the immisions was like after changing the temp sensor and it will pass now lmao just over a little sensor
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Offline Chris.

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Re: mk4 gti failed mot today
« Reply #9 on: 15 May 2012, 22:35 »
Simple fix then!  Saves £60-80 on a new lambda or £££'s on a cat.
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