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Model specific boards => Golf mk4 => Topic started by: markallen on 18 December 2012, 11:03

Title: MAF question?
Post by: markallen on 18 December 2012, 11:03
Hi having change the camshaft position sensor for a pricey sum of £74 with no shown improvements!!  :angry: I will now be moving on to the MAF, what I want to know is do I have to completely remove the MAF to test it, or can I just unplug it and go for a drive around the block? Cheers  :smiley:
Title: Re: MAF question?
Post by: davemk4 on 18 December 2012, 11:05
Just unplug it thats how we tested ours. My new maf here today
Title: Re: MAF question?
Post by: markallen on 18 December 2012, 11:06
Thanks mate. Did you have a rough idle at around 800rpm? When I increase it to about 1200rpm it seems to be fine?
Title: Re: MAF question?
Post by: davemk4 on 18 December 2012, 12:15
Under heavy load it would be hesitent and mis abit idle seemed fine
Title: Re: MAF question?
Post by: markallen on 18 December 2012, 17:24
Mines the other way round ha ha. But it's defo the MAF as its fine when unplugged. The dealer wanted £120 for exchange! I've read that people paid £65 for there's? Do you get the full sensor ie the round plastic tube too? Or is it just the screw in part?
Title: Re: MAF question?
Post by: Tezmax on 18 December 2012, 17:42
Its the whole lot mate
Title: Re: MAF question?
Post by: markallen on 18 December 2012, 17:57
I will get in touch with a friend who works a euro car parts then :) ha ha
Title: Re: MAF question?
Post by: dom on 18 December 2012, 19:14
I will get in touch with a friend who works a euro car parts then :) ha ha

Dont!

Get a genuine VW one....all others are crap! I got a bosch one from GSF & it only lasted 9 months :sad:
Title: Re: MAF question?
Post by: markallen on 18 December 2012, 19:33
VW ones are Bosch?
Title: Re: MAF question?
Post by: davemk4 on 18 December 2012, 19:39
my new maf arrived today (bosch) genuine VW and fitted cured issues straight away. low voltage issue was the error and was running in limp mode and bringing tc issues on.
Title: Re: MAF question?
Post by: mar_k on 18 December 2012, 19:41
VW ones are Bosch?


But they are new, The Euro car parts Bosch units are reconditioned and don't last.
Title: Re: MAF question?
Post by: markallen on 18 December 2012, 20:00
Are right sweet :) cheers
Title: Re: MAF question?
Post by: dom on 18 December 2012, 21:05
VW ones are Bosch?


But they are new, The Euro car parts Bosch units are reconditioned and don't last.

This.
Title: Re: MAF question?
Post by: markallen on 19 December 2012, 09:53
This what? Ha ha
Title: Re: MAF question?
Post by: xxChrisxx on 19 December 2012, 10:40
Having already spunked £75 quid away, why don't you do a more thorough investigation before splashing out on a new MAF. Unplugging it is not the be all and end all of diagnostic tests.

Quote
Thanks mate. Did you have a rough idle at around 800rpm? When I increase it to about 1200rpm it seems to be fine?

Does not scream dead MAF to me. It sounds more like a vac leak, or a dirty throttle body or injectors.

Your best bet is to find a man with VAGCOM and do a WOT run from 1k-redline in 3rd, logging MAF voltae/airflow readings.
(Only in a safe spot, coz speeding for diagnostic tests is bad mmmkay). Reading in g/s should be approx 0.8*power output.
Title: Re: MAF question?
Post by: markallen on 19 December 2012, 11:14
Ok mate :) cheers. Seems to start up and run fine this morning. I cleaned my MAF yesterday? Will see how it goes. If it develops again I will fined someone with Vag Com. As for the £75 it came up with Camshaft Position Sensor on the fault code reader so best to get it done ha ha.