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      05-20-2013, 02:03 PM   #49
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Drives: 2008 M3 - Interlagos Blue
Join Date: Apr 2013
Location: Houston, Texas

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2008 BMW M3  [0.00]
Originally Posted by elm3 View Post
Did you pull the codes? What were they? Check for vacuum leaks around the intake. Check the plugs, one by one. Try the small and cheap stuff first. I still say that you might have a coil that is going bad. See if the same cylinder is at fault. Let me know.
The car went in and these were the codes pulled:
27BB AND 27BA -- Fuel system Lambda
2722 Fuel-pressure sensor, signal
2786 Plausibility, fuel-pressure sensor, to mechanical pressure regulator
2B3B and 2B48 cyl. 7 misfire and exhaust

We replaced the cyl. coil to address the misfire. The shop is telling me that the fuel pump control unit has gone out. It has been ordered and it should arrive today or tomorrow. I am tempted to swith the low pressure fuel sensor before the more expensive control unit. Thoughts?
08 Interlagos Blue M3 | ACSchnitzer front lip, Hamman rear difuser, Vossen 20" wheels, Remus exhaust|