View Single Post
Old 09-08-2012, 03:15 PM   #8
jfoj
Registered User
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 11,593
My Ride: '06 330CiC, '03 M5
Not sure however most of the sensors have a 5 Volt reference from the DME.

You need to see where the Voltage drop is, either the wire is partially grounded or there is a problem with the connections or reference from the DME.

If you can backtrack the wire to the DME you can unplug the harness and see if the reference goes to 5 Volts. Also you should compare if the other CPS had 5 Volts as well.

If you do not have issues with the CPS or the reference, check the 2nd link below in my signature for more info on fuel pump problems that cause driveability issues.
__________________
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
jfoj is online now   Reply With Quote