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Model specific boards => Golf mk4 => Topic started by: smbgti on 18 September 2016, 17:50

Title: MK4 1.8T AUM REVING UP TO 1200RPM AND HOLDS THERE? EML ON HELP??
Post by: smbgti on 18 September 2016, 17:50

my golf gti mk4 aum 1.8t come up with a fault eml come on and the car revs to 1200 and stays there put the air con on goes down to 800 and stays turn that off and unplug the maf runs at 1000 once maf plug is off plug back in goes back up to 1200 and holds there anyone know the issue? any help would be great!

throttle body?
maf?
leak?

Title: Re: MK4 1.8T AUM REVING UP TO 1200RPM AND HOLDS THERE? EML ON HELP??
Post by: lemski on 18 September 2016, 18:47

Maf problem. Whats the code say

Title: Re: MK4 1.8T AUM REVING UP TO 1200RPM AND HOLDS THERE? EML ON HELP??
Post by: smbgti on 19 September 2016, 18:31

code was reading running to lean and o2 sensor

Title: Re: MK4 1.8T AUM REVING UP TO 1200RPM AND HOLDS THERE? EML ON HELP??
Post by: lemski on 19 September 2016, 18:47

O2 wont help fuelling. Id look at maybe a split vac pipe. Can you live data the maf, see if its changing while revving. Or a easier way do you know someone with a working maf just to swap and try

Title: Re: MK4 1.8T AUM REVING UP TO 1200RPM AND HOLDS THERE? EML ON HELP??
Post by: smbgti on 19 September 2016, 20:01

my dads just brought a gti as welll so going to swap mafs and see seems to drive fine just the lights on and revs at 1200 and holds there cant seem to fine any leaks not sure where to look

Title: Re: MK4 1.8T AUM REVING UP TO 1200RPM AND HOLDS THERE? EML ON HELP??
Post by: lemski on 20 September 2016, 09:50

There are a load of vacuum pipes on these engine that overtime will split. Most swap out for silicone instead of the rubber so they cant split again. 1St thing I do when I have 20vt

Title: Re: MK4 1.8T AUM REVING UP TO 1200RPM AND HOLDS THERE? EML ON *FIXED HOSE SPLIT*
Post by: smbgti on 20 September 2016, 14:49

HOSE WAS SPLIT UNDER INLET