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Fault codes

Discuss problems you have had or are having with your Z4
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jayd1000
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Fault codes

Post by jayd1000 » Sun Apr 15, 2018 6:31 pm

Hi guys any idea what these mean or could be?

Image

Car runs fine and ticks over tidy, only seems to happen if i give it some stick and go over 5.5k revs down bypass. Engine management light comes on and car goes into limp, turn ignition off then back on and it's fine?!?! Car is a 2.5 e85
Cheers jason

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Smartbear
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Fault codes

Post by Smartbear » Sun Apr 15, 2018 6:35 pm

Hi, it’s affecting both banks so I’d check out the rubber elbow on the inlet ducting-it’s a common area to split and cause weak running.
Rob
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

jayd1000
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Fault codes

Post by jayd1000 » Sun Apr 15, 2018 6:51 pm

Hi rob,
Thanks for quick reply. I have just done rocker cover gasket and renewed all ccv pipework so had inlet manifold off and all rubber boots looked good. I was loosing oil plus getting this code so a few said it could be sucking in air where it's loosing the oil so I decided to do the above. I Put it all back together again today took it for little run then a blast up bypass, all seemed fine even upto the dreaded 5.5k and over. An hour later came back down same bypass put foot down then same issue over 5k again, gutted thought I sorted it :headbang:

jayd1000
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Fault codes

Post by jayd1000 » Sun Apr 15, 2018 6:56 pm

Just thinking now, could it be coilpacks or injectors?

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Smartbear
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Fault codes

Post by Smartbear » Sun Apr 15, 2018 7:14 pm

Did you check the small rubber spur that’s on the inlet pipe? I don’t think coil pack problems would give a lean code :?
Rob
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

jayd1000
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Fault codes

Post by jayd1000 » Sun Apr 15, 2018 7:21 pm

Yeah its all good. i was thinking of replacing the boot when i had it off but when I checked it was in excellent condition with no signs of wear or deterioration so didn't bother.

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Behr
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Fault codes

Post by Behr » Sun Apr 15, 2018 9:44 pm

I suggest using DIS or INPA to read the codes if you can. That should give you more information, for example which sensor is reporting a fault specifically, rather then the standard ISO trouble codes.

Your issue is seemingly identical to my recent issue, which when read pointed me to replace the MAF.
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jayd1000
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Fault codes

Post by jayd1000 » Sun Apr 15, 2018 10:13 pm

Hi Behr,
Did changing MAF work for you?

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Behr
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Fault codes

Post by Behr » Sun Apr 15, 2018 10:16 pm

jayd1000 wrote: Sun Apr 15, 2018 10:13 pm Hi Behr,
Did changing MAF work for you?
Yes, in my case it’s did. Here’s the thread if you’re interested - viewtopic.php?f=3&t=102520
"It's got red seats and the roof comes off. What's not to love?"

jayd1000
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Fault codes

Post by jayd1000 » Tue Apr 17, 2018 2:08 am

Behr I read your thred and that sounds exactly the same issues as I had cheers :thumbsup:

jayd1000
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Fault codes

Post by jayd1000 » Tue Apr 17, 2018 10:35 pm

Right quick update.....Took MAF off today gave it a spray with this Image left it for half hour. Put it back on and took it for test drive, felt smooth. Got home turned engine off then back on and engine light gone off. Hope it was just a dirty MAF :D

jayd1000
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Fault codes

Post by jayd1000 » Wed Apr 18, 2018 12:25 am

Right quick update.....Took MAF off today gave it a spray with this Image left it for half hour. Put it back on and took it for test drive, felt good. Got home turned engine off then back on and engine light gone off. Hope it was just a dirty MAF :D

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