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Old 09-19-2012, 07:48 AM   #23
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Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 16,574
My Ride: 330CiC, M5, X5
You may have a basic electrical problem feeding the DME or your meter is not accurate at lower Voltages??

Suggest you get fresh set of AAA or AA batteries and put 3 of them together to see if you get slightly over 4.5 Volts as a test of your meter low Voltage accuracy.

Also make sure you have 12 Volts feeding the DME and you may need to check for wiring diagram info.

Before you become committed to the car, if it is a manual transmission, suggest you search subframe failures on the forum and make sure your car is solid before you get a rude awakening!
Solve your misfires, lean codes, rough idle -

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Hidden OBC Menu - Check Voltage, Temp, Fuel Level -

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Lower hose temp switch O-ring - BMW #13621743299
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