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Old 01-24-2013, 08:42 PM   #4
Registered User
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 16,098
My Ride: 330CiC, M5, X5
You need a scan tool that will read real time data.

You need to look at the fuel trims, temps and MAF readings.

If you have a Droid phone or tablet, $5 Torque App and a $15 OBD to Bluetooth Adapter. If not, see below:

You need to read these links -
Solve your misfires, lean codes, rough idle -

Fuel pump failures -

Temp Info -

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

E46/E39 GM5 Door Lock Info -

Lower hose temp switch O-ring - BMW #13621743299
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