MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: Adam_ on January 20, 2013, 08:53:36 pm

Title: Removed ITG Now It Keeps Cutting/Erratic Idle
Post by: Adam_ on January 20, 2013, 08:53:36 pm: Hi there got a bit of a problem I need sorted ASAP.

I have recently removed my ITG induction and put my standard air box on. The problem is it now won't idle and is very erratic so much so it stalls. Disconnecting the MAF sorts it out. Now for the confusing thing,

I popped the ITG back on and it's fine? Runs as it should. I have removed the battery for a day to try and see if it resets the ECU's expectations to no avail. The ECU is remapped :sad1:

Fault code is:

17497 - Mixture Regulation; Bank 2; Range 1
P1089 - 001 - Lean Limit Exceeded

Thanks in advance.
Title: Re: Removed ITG Now It Keeps Cutting/Erratic Idle
Post by: Russ_leeds on January 20, 2013, 09:17:31 pm: faulty/damaged maf housing on the standard air box?
Title: Re: Removed ITG Now It Keeps Cutting/Erratic Idle
Post by: Adam_ on January 20, 2013, 09:40:00 pm: Quote from: Russ_leeds on January 20, 2013, 09:17:31 pm
faulty/damaged maf housing on the standard air box?

All pipes and housing checked and its all in order with no cracks or leaks.
Title: Re: Removed ITG Now It Keeps Cutting/Erratic Idle
Post by: GrayMK5GTI on January 20, 2013, 09:48:50 pm: If it worked fine with the ITG both times, then the ECU needs to adapt to the OEM air box. When swapping back, drive it gently for a while and build the power on gently after a good few miles so it doesnt run lean.
Title: Re: Removed ITG Now It Keeps Cutting/Erratic Idle
Post by: Adam_ on January 20, 2013, 10:10:48 pm: Quote from: GrayMK5GTI on January 20, 2013, 09:48:50 pm
If it worked fine with the ITG both times, then the ECU needs to adapt to the OEM air box. When swapping back, drive it gently for a while and build the power on gently after a good few miles so it doesnt run lean.

It wont get out of the garage without stalling :-(
Title: Re: Removed ITG Now It Keeps Cutting/Erratic Idle
Post by: samdem on January 20, 2013, 10:13:54 pm: just let it idle in your garage for a while and then take it out for a little bit
Title: Re: Removed ITG Now It Keeps Cutting/Erratic Idle
Post by: 56OctyVRS on January 21, 2013, 10:06:21 am: Have you checked to see whether the seal is on the maf sensor and not fallen off when removing it from the itg
Title: Re: Removed ITG Now It Keeps Cutting/Erratic Idle
Post by: rich83 on January 21, 2013, 11:29:13 am: Try resetting the fuel trims.
Title: Re: Removed ITG Now It Keeps Cutting/Erratic Idle
Post by: Adam_ on January 21, 2013, 12:08:10 pm: Quote from: richwig83 on January 21, 2013, 11:29:13 am
Try resetting the fuel trims.

How do I do this?

I presume via vagcom? Mine is playing up :-(
Title: Re: Removed ITG Now It Keeps Cutting/Erratic Idle
Post by: bacillus on January 21, 2013, 12:58:30 pm: Quote from: richwig83 on January 21, 2013, 11:29:13 am
Try resetting the fuel trims.

That's unlikely to make any difference. And yes, you need vcds to reset the trim measurement.
Title: Re: Removed ITG Now It Keeps Cutting/Erratic Idle
Post by: chungster on January 21, 2013, 02:14:26 pm: Check the OEM air box that nothing is blocked in there
Title: Re: Removed ITG Now It Keeps Cutting/Erratic Idle
Post by: Adam_ on January 21, 2013, 06:56:45 pm: Quote from: chungster on January 21, 2013, 02:14:26 pm
Check the OEM air box that nothing is blocked in there

Nothing is blocked, and no vac leaks :confused: