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Model specific boards => Golf mk4 => Topic started by: rio_gti on 28 July 2014, 00:05

Title: Hunting on idol *vid*
Post by: rio_gti on 28 July 2014, 00:05

Anyone know why it hunts like this on idol?

http://youtu.be/ia0XXkGnsg0

Title: Re: Hunting on idol *vid*
Post by: MoMartin on 28 July 2014, 00:37

mine used to do that, and it turned out to be a dirty throttle body, so you could try that
also you could try cleaning your iat sensor too, as both of these cause a lumpy idle.

you normally need to reset the throttle body using vagcom after, if you do clean the throttle body that is

Title: Re: Hunting on idol *vid*
Post by: rio_gti on 28 July 2014, 08:27

Quote from: MoMartin on 28 July 2014, 00:37

mine used to do that, and it turned out to be a dirty throttle body, so you could try that
also you could try cleaning your iat sensor too, as both of these cause a lumpy idle.

you normally need to reset the throttle body using vagcom after, if you do clean the throttle body that is

Good suggestions but I cleaned the TB and realigned it befor the remap (was ment to say it's just been mapped)

And what's a iat sensor?!!!

Cheers!!

Title: Re: Hunting on idol *vid*
Post by: brewey on 28 July 2014, 08:44

I think the IAT is sensor just after TB and is bolted in with a hex bolt.

Title: Re: Hunting on idol *vid*
Post by: rio_gti on 28 July 2014, 08:45

the one that reads the temp in the mani?

Title: Re: Hunting on idol *vid*
Post by: brewey on 28 July 2014, 09:36

Yeah that's the one. It builds up with all the crap that coats the TB. Worth a go at least anyway. Is you MAF alright?

Title: Re: Hunting on idol *vid*
Post by: rio_gti on 28 July 2014, 13:02

well tbh when I cleaned the tb I also cleaned this sensor and the inside of the mani so it was nice and clean..... ill try the other sensor I got tonight thou....

maf should be alright as its the one they used on it when they mapped it so they should have picked it up if it was faulty

Title: Re: Hunting on idol *vid*
Post by: MoMartin on 28 July 2014, 15:26

Maybe a vacuum leak somewhere? though, they normally check for them prior to remapping

Title: Re: Hunting on idol *vid*
Post by: dom on 28 July 2014, 20:00

I'd also suggest a minor vac leak

Title: Re: Hunting on idol *vid*
Post by: rio_gti on 28 July 2014, 21:55

Looks like I'm gonna have to DIY smoke test/ pressure test then!!!!

Title: Re: Hunting on idol *vid*
Post by: Dalo Harkin on 31 July 2014, 12:58

Rio, what have you broken now  :shocked:
does it hunt when cold or up to temp?

Title: Re: Hunting on idol *vid*
Post by: rio_gti on 31 July 2014, 14:58

all the time  :cry:

Title: Re: Hunting on idol *vid*
Post by: Dalo Harkin on 31 July 2014, 15:11

fault codes?
who mapped it? have you spoken to them?

Title: Re: Hunting on idol *vid*
Post by: james2 on 31 July 2014, 16:19

Mine does this too. It never sits still. You sure this is not normal. :undecided:

Title: Re: Hunting on idol *vid*
Post by: Dalo Harkin on 31 July 2014, 16:26

Quote from: james2 on 31 July 2014, 16:19

Mine does this too. It never sits still. You sure this is not normal. :undecided:

No its definitely not normal, hunting is a sign that something somewhere is not getting the correct readings and trying to adjust to compensate

Title: Re: Hunting on idol *vid*
Post by: WadGTI on 31 July 2014, 17:12

I would have thoguht a vac leak somewhere or the MAF?