Quote:
Originally Posted by upallnight
Get a scanner that you can monitor live data while you are driving and when the engine first starts up. Usually a vacuum leak is the cause for stumble on acceleration and stumble on deceleration. Monitoring the Long term and short term fuel trim will determine if you have a vacuum leak. A vacuum leak will show a short term fuel trim of + as the computer is trying to compensate for a lean condition.
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Great idea. I have both INPA and DIS/GT1. I'm assuming I could use one of those?
EDIT... Looks like INPA has exactly what I need for that! I'll do some monitoring with it in the morning...
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'05 X5 3.0
'06 325i
'90 E30/S52
Last edited by RenaissanceMan; 08-24-2016 at 11:40 PM.
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