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Old 03-16-2012, 09:52 AM   #6
jfoj
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Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 10,019
My Ride: '06 330CiC, '03 M5
If the intake camshaft position sensor was in fact replaced, was an OEM camshaft position sensor used or an aftermarket sensor?

Also if a BMW specific code reader is being used, sometimes you get more specific details about the sensor circuit, such as an open or a short?

Maybe there is a wiring problem to the sensor, loose terminals in the connector, or maybe a non OEM sensor was used? I cannot tell you for sure that non OEM sensors are bad or not wise to use, but I have read many reports that suggest that OEM sensors are the best to use.

If the fuel pump is an issue, usually you can turn the key on and off a few times before you start the car to pressurize the fuel rail even if the there is problem with the fuel line bleeding down. If a fuel line leakage is an issue, the key on and off 3-4 times to prime the fuel line will result in a more immediate start. This may give you some idea if fuel line pressure loss is a problem.

On a side note, fuel pumps are problems in these cars, you might check the history to see if a pump has ever been replaced.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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