MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: northyracing on February 22, 2013, 05:37:17 pm

Title: a lumpy idle
Post by: northyracing on February 22, 2013, 05:37:17 pm
right i have posted this problem on here before but no answers, firstly i had a hesitation on pull away so changed the dv and it was well and truly naffed, also noticed that it as full of engine oil, once replaced was a totally different car to drive  :happy2:, but now the car idles abit lumpy and dont know where to start looking. plugs and coils have been changed not long ago as i had a coil fail so replaced all 4 and plugs to match. oh and i done the dipstick test an once out runs even worse so does this rule out the PCV or can it just be on its way out
Title: Re: a lumpy idle
Post by: northyracing on February 22, 2013, 11:36:07 pm
anyone
Title: Re: a lumpy idle
Post by: Tortaruga on February 22, 2013, 11:41:28 pm
I think you should get a diagnostic scan and see what comes up.

PCV sounds ok as you've done the dipstick test.
Title: Re: a lumpy idle
Post by: northyracing on February 23, 2013, 12:18:51 am
done a scan and nothing shows up atall so i am very confused
Title: Re: a lumpy idle
Post by: northyracing on February 23, 2013, 10:08:49 am
Anyone shed any light
Title: Re: a lumpy idle
Post by: doylebros on February 23, 2013, 11:03:15 am
My thoughts would be to look here if you've got no access to VCDS to scan the vehicle

http://www.golfmkv.com/forums/showthread.php?t=49016

N80 valve
Title: Re: a lumpy idle
Post by: Russ_leeds on February 23, 2013, 11:21:36 am
IIRC the tfsi engine is quite common with a slightly lumpy idle. Am I right in saying that the rev needle doesnt mave when you feel the judders??
Title: Re: a lumpy idle
Post by: northyracing on February 23, 2013, 12:00:55 pm
IIRC the tfsi engine is quite common with a slightly lumpy idle. Am I right in saying that the rev needle doesnt mave when you feel the judders??
Mate you hit the nail on the head it does it when sat at lights and the needle don't more atall that's why I was confused it just feels abit juddery in low speed then pulls like a train
Title: Re: a lumpy idle
Post by: Bryan on February 23, 2013, 12:08:29 pm
Sounds exactly the same as mine....does the lumpyness stedy up when you press the clutch down??
Title: Re: a lumpy idle
Post by: northyracing on February 23, 2013, 12:17:18 pm
Sounds exactly the same as mine....does the lumpyness stedy up when you press the clutch down??
No it still stays the same. It's getting worse
Title: Re: a lumpy idle
Post by: Saintsteve on February 23, 2013, 12:22:17 pm
I'm gonna try the Terraclean this afternoon as I have a slight idle misfire so could be a slight injector malfunction.

Use VCDS and logs blocks 15 and 16 and see if you have any misfires showing.

Title: Re: a lumpy idle
Post by: Rustybear on February 27, 2013, 08:55:33 pm
I got exactly the same!!! What's terraclean, where can I get it and how do I do it please?
Title: Re: a lumpy idle
Post by: Saintsteve on February 27, 2013, 09:59:10 pm
I got exactly the same!!! What's terraclean, where can I get it and how do I do it please?

Google Terraclean  :innocent:
Title: Re: a lumpy idle
Post by: Tom t on February 28, 2013, 11:02:41 pm
what revs should a mk5 gti idle at? also what does the dipstick test show?
also would it be similar or have the same effect as taking the oil cap off whilst running? thanks
Title: Re: a lumpy idle
Post by: Rustybear on February 28, 2013, 11:23:23 pm
Done, getting booked in looking at £95, sound about right? Read the info but anyone had it done ad what difference does it are really? My Gti is 06 fvwsh with 100k.
Title: Re: a lumpy idle
Post by: Tom t on March 01, 2013, 12:25:11 am
£95 for terraclean? Any idea what you're car idles at?
Title: Re: a lumpy idle
Post by: Rustybear on March 03, 2013, 11:46:46 pm
Is that pricy?? Idles below 1000, 850...
Title: Re: a lumpy idle
Post by: Saintsteve on March 04, 2013, 06:36:33 pm
£95 for terraclean? Any idea what you're car idles at?

On VCDS mine idles at 720-760rpm, with air con 760-780rpm