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7 Series - E65 / E66 (2002 - 2008)
Discussion of BMW's 4th generation E65/E66 7 Series flagship. The E65 generated much controversy, due to its radical styling and iDrive user difficulties. Nonetheless, the E65 broke records to become the best-selling 7-series iteration ever, especially after its 2005 facelift.

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Old 03-16-2011, 10:17 PM
Hpiracer Hpiracer is offline
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Location: Hempstead, NY
Join Date: Mar 2011
Posts: 10
Mein Auto: 2003 745Li
03 745Li - Problem

745Li Problem

Hi guys. Have a great 2003 745Li with 122k. Decided no more money for the stealership. I've had all kinds of cars and been a DIY for a 70 SS 396 camaro, 68 350 firebird and 74 corvette. Never worked on anything with all this computer stuff. I developed a coolant leak from the weep hole last week. Put the car on auto ramps after buying the all German Auto coolant pipe and kit and it went in like a dream. However, despite marking all wires and other parts etc., when everything was back together, I started the car and at first I heard a knocking sound and then valve lifter noise like if the timing was all screwed up or no oil in the engine. Received the usual "engine malfunction" and "service engine soon" lights. I bought a Peak Research tool for diagnosis. The following codes came up:

1. 2786 - throttle valve potentiometer 1
2. 2781- camshaft sensor inlet
3. 27A8 - activation EV4
4. 274E - misfire detection
5. 2744 - misfire detection cyl. 4
6. 2745 - misfire detection cyl. 8
7. 2749 - misfire detection cyl. 2

Can anybody guide me on how to resolve this problem? Car was running great before coolant leak. I was thinking it might be a sensor problem or vacuum problem but I'm not sure where to start. Need your help. Thanks.

Could be VANOS solenoid problem too! Might be dirty or defective.
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