AudiSRS.com
 Home  •  Forums  •  New Posts  •  Search  •  Classifieds  •  Insurance  •  Advertisers  •  Shop  •  Profile  •  Log in to check your private messages  •  Log in   •  Join! (free)
 engine fault View next topic
View previous topic

Post new topicReply to topic
Author Message
chiefmechanic
Knows a Bit


Car: b5 rs4
Power: 380

Joined: 27 Aug 2010
Posts: 173

Location: larne

PostPosted: Mon Dec 23, 2013 9:29 pm  Reply with quoteBack to top

I have a urs4 with a 2.2 20v aan engine. It has an mtm chip rs2 em 3" ss exhaust no cats bigger intercooler roughly 268bhp. Driving home last night the car died. It would start again but not continue to run below 1500rpm. I unplugged the maf and was able to drive it home but at reduced power. I have tried 3 different maf's all with the same part number but only one with an adjuster screw on the side. It will only run with the one with the adjusting screw but all throw up a fault code on vcds which I cant clear.

Address 01: Engine Labels: Redir Fail!
Control Module Part Number: 4A0 907 551 AA
Component and/or Version: 2,2l R5 MOTR.RHV HS D03
Software Coding: PMC 1
Work Shop Code:
VCID: 62CFE0CCEE6B6D0EE27-4A3A
3 Faults Found:

00553 - Mass Air Flow Sensor (G70)
07-00 - Signal too Low
00537 - Lambda (Oxygen Sensor) Regulation
11-00 - Control Limit Not Reached
00519 - Intake Manifold Pressure Sensor (G71)
17-00 - Control Difference

I cant really start fault finding till I clear the maf fault as it could be causing the rest of the symtoms.
What I would like to know is
Why will the engine not run with a good maf with the same part number. It runs better unplugged.
Is there a difference to a maf thats fitted to a rr or aby or aan engine.
Does a mapped ecu look for a specific voltage from a maf.
Thanks in advance for the replys and Merry Christmas
View user's profileSend private message
colicabcadam
Experienced


Car: B5 RS4
Power: 679 bhp
Torque: 583 lbft

Joined: 11 Nov 2011
Posts: 3864


PostPosted: Mon Dec 23, 2013 10:10 pm Reply with quoteBack to top

clean the maf first, might fix it, not sure on the 2.2 i5 but it should run without it !! just clean codes and then disconnect it

_________________
View user's profileSend private message
tino
knowledgeable



Joined: 29 Jun 2009
Posts: 543


PostPosted: Mon Dec 23, 2013 10:46 pm Reply with quoteBack to top

I'd look for an air leak
View user's profileSend private message
chiefmechanic
Knows a Bit


Car: b5 rs4
Power: 380

Joined: 27 Aug 2010
Posts: 173

Location: larne

PostPosted: Tue Dec 24, 2013 4:45 pm Reply with quoteBack to top

Was an air leak. Boost hose blown off. Thanks for the pointers. Brian  
View user's profileSend private message
Display posts from previous:      
Post new topicReply to topic

Share |

 Jump to:   


View next topic
View previous topic
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum






Powered by phpBB phpBB Group



AudiSRS.com is not affiliated with Audi in any way. The Audi name and logos are registered trademarks of Audi
The content on this website has not been endorsed by Audi, nor has it been verified for correctness by AudiSRS.com.
All other logos and trademarks in this site are property of their respective owners.
The comments are property of their posters, all the rest are copyright by AudiSRS.com