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Old May 22nd, 2010, 11:38 PM   #1
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Help wrench light


I was inspecting my airfilter and my MAFand it looked fine but I blew on it just in case there was anything in there. So when I started it up and drove the WRENCH came on. I pulled the neg bat cable for 5mins to reset and tjen restarted and wrench was still there but car runs fine. I took my X3 and reset tune to stock and then reflashed my performance tune and wrench is still there but the X3 says there are no codes. What the hell is going on and what should I do now???

From now on I aint touching this car unless it's really running like crap.
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Old May 22nd, 2010, 11:52 PM   #2
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How does the car run?
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Old May 23rd, 2010, 09:00 AM   #3
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It runs fine and there are no codes, but I don't want to have it go into limpmode at an unexpected time, which is what seems to happen when you ignore the wrench..
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Old May 23rd, 2010, 09:59 AM   #4
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I once had my wrench light come on, and I couldn't figure it out for the life of me.

Turned out that after cleaning/oiling the filter on my Airaid, I had somehow twisted the rubber boot off a little bit where it slips on to the plastic tube. When I put it back together properly, the wrench went away after a few minutes.

Stupid fuckin wrench!

lol
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Old May 23rd, 2010, 11:35 AM   #5
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If you have the wrench light immediately after disconnecting your battery, then the car has failed one of it's pre-start diagnostics...it's weird that you didn't get a code, though. Usually the wrench light is because of a throttle position issue...keep checking it periodically for codes after some short drives...it will manifest itself eventually.
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Old May 23rd, 2010, 11:46 AM   #6
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Could discoing the battery for 15 minutes again help in this situation?
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Old May 23rd, 2010, 12:09 PM   #7
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Couldn't hurt, but if it failed a voltage sweep test for any of the systems, it'll come back. I would try again, for sure.
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Old May 23rd, 2010, 01:44 PM   #8
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I checked my intake hookup and all is good so I Just got done putting stock intake and tune back into it and going for a drive, the light stayed off while idling for 10mins but soon as I started driving and the automatic shifted into 2nd the FRIGGIN WRENCH came back on but still drives fine.. THIS car is pissing me off but thanks for the input. Just wondering what the hech to do next..

I read some posts in here where poeple just bought a TPS and it solved their wrench problem..
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Old May 23rd, 2010, 01:52 PM   #9
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Is there a way to test the MAF? Just since that stands out to me. You did blow on it.

Maybe you suck at blowing.



Kidding aside, perhaps something got messed on the MAF as a result? Never seen one off our cars, so I am obviously grasping at straws here. Are they that sensitive?
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Old May 23rd, 2010, 02:48 PM   #10
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Originally Posted by TheUNZippee! View Post
Is there a way to test the MAF? Just since that stands out to me. You did blow on it.

Maybe you suck at blowing.



Kidding aside, perhaps something got messed on the MAF as a result? Never seen one off our cars, so I am obviously grasping at straws here. Are they that sensitive?
yes there very sensitive, i was leaving a gas station and had to step on it so i left the driveway a little to hard and my wrench light came on and the car drove like shit, lucky for me my dealership was 3 blocks away and it turned out i destroyed the MFA just from taking that harsh bump. so yes very sensitive hahaha
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Old May 23rd, 2010, 03:00 PM   #11
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Damn. Well there you go. The plot un-thickens. lol
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Old May 23rd, 2010, 03:29 PM   #12
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Yea but when you upgrade your intake you have to take the maf out of your stock intake when upgrading to a C&L racer and reinstall it in their larger maf housing and I blew on it then because it had some particles on it and it worked fine.. And man after returning it to stock intake and tune I don't even like driving it anymore.

I wonder if the tunefiles got corrupted on my X3 and they are missing some little parameters that are causing the wrench light with no codes???
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Old May 23rd, 2010, 05:24 PM   #13
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Originally Posted by StutteringStang06 View Post
yes there very sensitive, i was leaving a gas station and had to step on it so i left the driveway a little to hard and my wrench light came on and the car drove like shit, lucky for me my dealership was 3 blocks away and it turned out i destroyed the MFA just from taking that harsh bump. so yes very sensitive hahaha
Interesting.
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Old May 25th, 2010, 01:20 PM   #14
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Originally Posted by wveil3v View Post
I checked my intake hookup and all is good so I Just got done putting stock intake and tune back into it and going for a drive, the light stayed off while idling for 10mins but soon as I started driving and the automatic shifted into 2nd the FRIGGIN WRENCH came back on but still drives fine.. THIS car is pissing me off but thanks for the input. Just wondering what the hech to do next..

I read some posts in here where poeple just bought a TPS and it solved their wrench problem..
Well I bought a TPS from Ford for 134.00 and it didn't get rid of the wrench light, so I just put my CAI and tune back on and have been driving it with the wrench light now for 3 days with no codes and it runs great, what the hech is up with this car??? I cleaned the TB and the MAF and it doesn't matter I can't get rid of the wrench light bu car runs great.
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