MAF sensor location

maidenboy · Post by **maidenboy** » Fri Sep 09, 2011 1:54 pm

Hi folks, having trouble locating the MAF on my car as I think it's playing up.. Got the 6n2 gti.. With a BMC CDA induction kit fitted.. Any ideas?? Please help as if it's still there, it's not obvious.. Have searched but to no avail..

Post by **alexperkins** » Sat Sep 10, 2011 12:02 am

The Polo GTI does not have a MAF sensor - thats why you can't find it.

They have a MAP sensor on the inlet manifold instead.

maidenboy · Post by **maidenboy** » Sat Sep 10, 2011 8:17 am

Lol, thanks for clearing that up mate

I found the map sensor, knew I wasn't being too stupid

one less thing to clean and check..

HD9POLOGTi · Post by **HD9POLOGTi** » Sat Sep 10, 2011 10:27 am

Any tips on cleaning the map sensor mate i think mine is playing up as the car keeps juddering on a cold start up also were abouts on the manifold is it and what am i looking for (daft question)

maidenboy · Post by **maidenboy** » Sat Sep 10, 2011 10:36 am

Map sensor is on the opposite end of the intake to the throttle body. If you remove any air box/induction kit you have fitted, look down where the crankcase breather comes up, and you will see it there on the side. Access is a little tight, so I popped out the 2 fuel lines from their retainers, and moved them aside.. It's just 2 little bolts that hold it in. Just be gentle. Clean with electrical contact cleaner and replace..

Trunkz · Post by **Trunkz** » Mon Sep 12, 2011 11:57 am

AHA! My MAP sensor is the b***h thats causing me problems. I've been told not to spray the actual sensor, but the hole where it goes in with carb cleaner. I'm gonna get on it later this afternoon.

Post by **alexperkins** » Mon Sep 12, 2011 12:01 pm

Make sure you dont get carb cleaner anywhere near the MAP - itll destroy it.

maidenboy · Post by **maidenboy** » Mon Sep 12, 2011 12:51 pm

Sorry, shoulda been clearer, as Alex said! Don't spray sensor.. Just clean out the hole you remove it from!

good call..

Trunkz · Post by **Trunkz** » Mon Sep 12, 2011 4:26 pm

Hmmm.. I sprayed contact cleaner on a cotton bud, and cleaned it with it. Then I just sprayed carb cleaner in my inlet manifold, which I'm pretty sure is just black inside. My throttle body is completely full of dirt, and I only cleaned it out a few months back.

Trottagti · Post by **Trottagti** » Mon Sep 12, 2011 7:00 pm

Hmm, let us know how you get on I might attack mine as itl probs need cleaning lol...

Trunkz · Post by **Trunkz** » Mon Sep 12, 2011 7:10 pm

Was a doddle to do. You need a Torx 15 bit to undo the two bolts on the sensor. Used some contact cleaner on the sensor itself & carb cleaner in the manifold.

maidenboy · Post by **maidenboy** » Mon Sep 12, 2011 9:25 pm

Trunks, are you running the crank case breather into the air inlet still? I left mine off, with a filter on of course, blocked old hole, and the intake has stayed spotless since I cleaned her last.. Nice touch with the cotton bud tho, gotta be easier than dry cloth wiping.. That stuff gets a little chewy.. Lol

Trottagti · Post by **Trottagti** » Mon Sep 12, 2011 9:51 pm

My throttle body is spotless and I run the crank case breather on my typhoon kit. Was your map sensor dirty then? Pics?

maidenboy · Post by **maidenboy** » Tue Sep 13, 2011 10:07 am

Yeah mine was a little dirty, I'm guessing that it was residual after the standard airbox was upgraded to the bmc.. Not that it matters now.. Spotless

Reason I have not uploaded any pics is because i am a little slack with my knowledge.. How do I upload pics from the iPhone? Is there a way or am I gonna have to start using a 'real' camera?

Trottagti · Post by **Trottagti** » Tue Sep 13, 2011 12:09 pm

I use an app called photobucket. It's really good and I never need a computer for uploading pics it's really good. And it's free from the app store, win! Lol!

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