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Model specific boards => Golf mk4 => Topic started by: davemk4 on 08 June 2013, 08:53

Title: revs drop no pattern and no not maf
Post by: davemk4 on 08 June 2013, 08:53

2001 aum. With no pattern or temp relation my rev drop quite low car judders slighlty. Now maf is new genuine VW not refurb. Boost pipes all good. The usual crap breathers near front all ok or new. I use a k&n so wondered if maf caked in oil? Only 4 months old.?? No error lights no codes pending no drive problems. To clean maf what best quick spray of carb cleaner? Any other suggestions

Title: Re: revs drop no pattern and no not maf
Post by: jamie16v on 08 June 2013, 09:42

So, in your title you say it`s not the maf, then you ask if it`s caked in oil?...
try unplugging it and see if it makes a difference. as you know k&n are know to use oil as a part of its air cleaning process.. i would use electrical cleaner rather than carb cleaner, but i cant see carb cleaner harming it to be honest.

Title: Re: revs drop no pattern and no not maf
Post by: dom on 08 June 2013, 09:44

Dirty throttle body?

Title: Re: revs drop no pattern and no not maf
Post by: jamie16v on 08 June 2013, 09:52

Quote from: dom069 on 08 June 2013, 09:44

Dirty throttle body?

most likely :wink:

Title: Re: revs drop no pattern and no not maf
Post by: davemk4 on 08 June 2013, 10:20

Throttle body was gutted when car was gutted in january. All was cleaned and along with pipe breathers etc. Thing is the fault has no pattern when it does it. Today not once yesterday 4 times

Title: Re: revs drop no pattern and no not maf
Post by: 52GTIPETE on 08 June 2013, 12:30

PCV valve. Will be a hair line split somewhere

Title: Re: revs drop no pattern and no not maf
Post by: davemk4 on 08 June 2013, 15:00

Ill check it later