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E34 #68 Fault Code

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Hi Guys,

My 95 520i has got a lumpy Idle, stalls out, generally running rough, it has thrown up fault code 68? Where do i look??

Any advice gratefully accepted.

Regards

John M

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According to this: https://www.endtuning.com/bmwcodes.html#MS40 #68 would be an air flow meter issue. 

 

I'd double check you don't have any air leaks, you might want to try cleaning the element CAREFULLY, they can be easily damaged, but other than that, replacement with a known good used, or new one seems to be the fix.

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As above. Check the condition of the rubber intake boot. From MAF to intake manifold, and the hoses to it. If it's original it's most likely perished so engine will draw air in through the leaks, in which case the MAF doesn't know, so won't tell the engine to inject more fuel. 

 

Keliuss

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4 hours ago, Keliuss said:

As above. Check the condition of the rubber intake boot. From MAF to intake manifold, and the hoses to it. If it's original it's most likely perished so engine will draw air in through the leaks, in which case the MAF doesn't know, so won't tell the engine to inject more fuel. 

 

Keliuss


That’s what my rough idle was, e34 520

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