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2G MAS probelm #244112
October 04, 2007 04:14 pm UTC
October 04, 2007 04:14 pm UTC
Joined: Sep 2007
Posts: 70
Scarborough, ON
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Usman Majeed Offline OP
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Usman Majeed  Offline OP
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Ok guys, the car threw me a CEL P0110 IAT (intake air temperature sensor) malfunction. Just wondering how do I go about diagnosing that. All the wires on the MAS plug look fine to me and I also looked at VFAQ and the 2G MAS wiring diagram. I do understand that PIN 8 there is nothing, thats what intially I thought was the problem. Now I searched and I found out that the sensor itself is actually inside the MAS. Any suggestions?

Also the car does not boost at at all. It reaches 0 psi from -20 vaccum and just stutters. The IAT malfucntion would be causing that right?

All help is appreciated!
Osman

Re: 2G MAS probelm [Re: Usman Majeed] #244113
October 04, 2007 04:31 pm UTC
October 04, 2007 04:31 pm UTC
Joined: Oct 2005
Posts: 10,749
Belleville, Ontario
Ryan Laliberte Offline

No-Lift-To-Shift.... Stock. :)
Ryan Laliberte  Offline

No-Lift-To-Shift.... Stock. :)
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Sounds like a boost leak to me.

Check your pipes, and your SMIC (if you have one).


AWDAuto
1996 TSi AWD Automagic
12.24 @ 113 - Small 16G
FP Green HTA - 11.42/123
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Re: 2G MAS probelm [Re: Ryan Laliberte] #244115
October 04, 2007 04:38 pm UTC
October 04, 2007 04:38 pm UTC
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Posts: 70
Scarborough, ON
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Usman Majeed Offline OP
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I have FMIC. So you think a boost leak is causing the car not to boost at all not the IAT malfunction?

Re: 2G MAS probelm [Re: Usman Majeed] #244118
October 04, 2007 05:19 pm UTC
October 04, 2007 05:19 pm UTC
Joined: Oct 2005
Posts: 10,749
Belleville, Ontario
Ryan Laliberte Offline

No-Lift-To-Shift.... Stock. :)
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Could be. If you hit boost and your car starts bogging and sputtering, you probably have a boost leak.


AWDAuto
1996 TSi AWD Automagic
12.24 @ 113 - Small 16G
FP Green HTA - 11.42/123
Team Pump Gas and Meth
RTMRacing - Your Canadian source for DSM Parts

"Every moment you live is pregnant with the next moment of your life" --Jim Carrey

Last Login: September 28, 2021
Re: 2G MAS probelm [Re: Ryan Laliberte] #244135
October 04, 2007 08:29 pm UTC
October 04, 2007 08:29 pm UTC
Joined: Nov 2006
Posts: 1,137
Kingston
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Paul Sitarski Offline
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Could be a bad MAS plug, I just replaced my plug as the car sometimes would studder and not idle/run. If you wiggle the wire it would come back. check that also


TPG+Meth
Re: 2G MAS probelm [Re: Paul Sitarski] #244136
October 04, 2007 08:48 pm UTC
October 04, 2007 08:48 pm UTC
Joined: Sep 2004
Posts: 1,463
Toronto, ON
Grant Redfern Offline
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Toronto, ON
i'd also try a MAS cleaner like at Napa (CRC Sensor Clean)


6-MT Stage II B5 Audi S4

Re: 2G MAS probelm [Re: Grant Redfern] #244148
October 04, 2007 10:46 pm UTC
October 04, 2007 10:46 pm UTC
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Scarborough, ON
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Usman Majeed Offline OP
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Scarborough, ON
Yea I was actually looking at the plug and I did count 7 wires going through the back but when I look at the plug from the front I only see 6 prongs to connect to the MAS itself.

Re: 2G MAS probelm [Re: Usman Majeed] #244263
October 05, 2007 10:28 pm UTC
October 05, 2007 10:28 pm UTC
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Scarborough, ON
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Usman Majeed Offline OP
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Ok I did a boost leak and no solution found yet. Here is what happened:

I soaped/watered everything I possibly could and got a friend to watch the boost gauge. The boost gauge does even move from 0 psi. Now I know the boost gauge is working properly because when I drive the car it moves from -20 vaccum to 0 psi boost and then the car starts to stutter.

This was happeneing before too with my PTE 5031RE turbo as well and I thought maybe the wastegate flapper is giving me a problem. I shut that with more tension on the actuator arm but the boost leak test still didn't work. I swapped the turbo with a 14b now and boost leak test still doesn't work. Any ideas guys? Can't see or hear and leaks.

Re: 2G MAS probelm [Re: Usman Majeed] #244268
October 05, 2007 11:20 pm UTC
October 05, 2007 11:20 pm UTC
Joined: May 2003
Posts: 1,474
Mississauga
James DeCunha Offline
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The air has to be going somewhere..
What kind of pump are you using to put air into the system


1992 Talon 6/4bolt
What 10 seconds worth of parts doing 12s looks like
Msn: RSXER@hotmail.com
Re: 2G MAS probelm [Re: James DeCunha] #244269
October 05, 2007 11:29 pm UTC
October 05, 2007 11:29 pm UTC
Joined: Sep 2007
Posts: 70
Scarborough, ON
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Usman Majeed Offline OP
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Usman Majeed  Offline OP
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Scarborough, ON
I am using a shop air compressor.

Re: 2G MAS probelm [Re: Usman Majeed] #244332
October 06, 2007 11:42 pm UTC
October 06, 2007 11:42 pm UTC
Joined: Sep 2007
Posts: 70
Scarborough, ON
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Usman Majeed Offline OP
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Is there a way to attach somne dsmlink logs so you guys can take a look at them?

Re: 2G MAS probelm [Re: Usman Majeed] #244333
October 06, 2007 11:59 pm UTC
October 06, 2007 11:59 pm UTC
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Brampton/Toronto
Mike Palome Offline
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Post the logs on the dsmlink forums then give us a link to your post. Why dont you borrow someones mas and that way you can verify that your mas works. I also think its a boost leak but it can even be a major exhaust leak before the turbo or at the o2 housing. Maybe your turbo's pooched to much shaft play, I have a 20g with major shaft play and I didn't get boost.

Last edited by Mike Palome; October 07, 2007 12:00 am UTC.

1995 AWD talon
Re: 2G MAS probelm [Re: Mike Palome] #244339
October 07, 2007 02:11 am UTC
October 07, 2007 02:11 am UTC
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Scarborough, ON
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Usman Majeed Offline OP
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Scarborough, ON
I have checked the turbo for shaft play and there is none. Now as far as the exhaust leak, I know that when the car is running I should be able to feel the air leaking around the turbo or even the O2 housing but nothing felt. Correct if I am wrong please.

Re: 2G MAS probelm [Re: Usman Majeed] #244340
October 07, 2007 02:23 am UTC
October 07, 2007 02:23 am UTC
Joined: Sep 2007
Posts: 70
Scarborough, ON
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Usman Majeed Offline OP
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Usman Majeed  Offline OP
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Joined: Sep 2007
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Scarborough, ON

Re: 2G MAS probelm [Re: Usman Majeed] #244392
October 07, 2007 06:13 pm UTC
October 07, 2007 06:13 pm UTC
Joined: Sep 2007
Posts: 70
Scarborough, ON
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Usman Majeed Offline OP
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Anybody have any ideas?


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