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Model specific boards => Golf mk5 => Topic started by: Riz on 10 April 2009, 17:25

Title: Idling Problems?
Post by: Riz on 10 April 2009, 17:25

My Idling seems to have gone lumpy also the Revs rise then drop when stationary. Is this a TDC issue?
Only noticed it today, power seems to be ok, maybe a slight MPG drop but hard to  tell to be honest!!!

Title: Re: Idling Problems?
Post by: bacillus on 10 April 2009, 17:54

Could be your plugs...

Title: Re: Idling Problems?
Post by: ub7rm on 10 April 2009, 18:56

No warning lights?

MAF maybe  :undecided:

Best bet would be to get it vag-com'd (VCDS) but if it is the MAF they don't tend to generate a code in general.  You need to monitor the air flow on a run to see if its OK.

With MK4's a low tech way of testing the MAF was to unplug it.  If it ran smoother when it was unplugged then that was the problem.  If it didn't make much difference then it didn't really prove anything.

Title: Re: Idling Problems?
Post by: Riz on 10 April 2009, 19:34

MAF?

Title: Re: Idling Problems?
Post by: bacillus on 10 April 2009, 19:44

maf = mass air flow sensor.

Title: Re: Idling Problems?
Post by: ub7rm on 10 April 2009, 19:46

Notorious for causing just this sort of problem.  Whats your mileage?

Title: Re: Idling Problems?
Post by: Riz on 10 April 2009, 19:54

27000

I still have 3 months left of warranty, recently bought the car so havent transferred those details over as of yet.

Is it safe to drive the car?

Title: Re: Idling Problems?
Post by: ub7rm on 10 April 2009, 19:58

It is a little early for a MAF failure but you never know.  They are the work of the devil.  Could be something completely different too mind, I'm just speculating

Under warranty?  Happy days  :smiley:

Probably is safe enough to drive shortish distances - but don't sue  :laugh:

Title: Re: Idling Problems?
Post by: Riz on 10 April 2009, 20:04

cheers mate, yeah , ive had 3x Renault CLio's and they never had a problem!! lol,

Hopefully VW will sort it out!!

Title: Re: Idling Problems?
Post by: Riz on 10 April 2009, 22:07

AA thinks it may be the Coil pack, but not sure, their diagnostic kit didnt pick anything up!!

Title: Re: Idling Problems?
Post by: ub7rm on 10 April 2009, 23:29

£5 says its the MAF  :cool:

Like I said MAF faults generally don't cause a code until its proper fecked.

Faulty coil packs would have left a misfire code.

Title: Re: Idling Problems?
Post by: AlanD on 10 April 2009, 23:38

Dont bother getting the AA involved. Its under warranty, take it back and get them to sort it out.

Title: Re: Idling Problems?
Post by: Riz on 10 April 2009, 23:57

LOL RAC said MAF or slight airleak or didgy idling sensor, can a dealer replace the MAF quicky?

Title: Re: Idling Problems?
Post by: ub7rm on 11 April 2009, 09:11

Should take no more than 5 minutes to swap the actual part over.

Title: Re: Idling Problems?
Post by: Riz on 12 April 2009, 17:25

Turbo Pressure sensor, which caused an air leak, according to the dealer!!

Title: Re: Idling Problems?
Post by: ub7rm on 12 April 2009, 21:36

Seems I owe you a fiver  :sad:

If you want the monies, I will need your bank account details.. sort code and account number please  :wink:

Title: Re: Idling Problems?
Post by: Riz on 12 April 2009, 22:06

but it did cause an airleak!! lol, thing is they say that i should be idling "lean" which i can vouch for, but also a loss of power which i dont have!!!

Ill take paypal

Title: Re: Idling Problems?
Post by: bacillus on 12 April 2009, 22:23

Quote from: ub7rm on 12 April 2009, 21:36

If you want the monies, I will need your bank account details.. sort code and account number please  :wink:

Shouldn't your location be Nigeria...    :grin: