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Old 11-05-2012, 10:37 PM   #6
Registered User
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 16,077
My Ride: 330CiC, M5, X5
The SAP vacuum control hose that runs around the valve cover is FAMOUS for multiple breaks.

Most people fully bypass this line from the vacuum control valve to under the rear of the intake.

See my first link in my signature regardlng the SAP section.
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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