BMW 3 Series E90 Valve Cover And Eccentric Shaft Sensor DIY Fault Code 2a31 2a47
I show you how to remove and replace the valve cover and eccentric shaft sensor specifically on a BMW 3 Series E90. This video is very comprehensive and includes some GREAT TIPS AND TRICKS for the valve cover removal and installation. This BMW would barely run and had a check engine light. The fault codes where for the eccentric shaft sensor 2A31 DME valvetronic eccentric shaft sensor guide and 2a47 valvetronic eccentric shaft sensor plausibility. The sensor was completely failed which led to very poor running. There was also oil in the sensor pins.
BMW Valvetronic Variable Valve Lift
BWM Valvetronic Electronic Valve Lift Get the book and DVD here: https://www.createspace.com/4278102 https://www.createspace.com/371201 Valvetronic engines use a combination of hardware and programing to abolish the need for a regular throttle mechanism. Valvetronic varies the lift of the intake valves. Based on signals formerly taken mechanically from the accelerator pedal position sensor, the stepper motor changes the phase of the eccentric cam, modifying the action of the intake valves.This system has a conventional intake cam, but it also uses a secondary eccentric shaft with a series of levers and cam followers, activated by an electronic stepper motor. The Valvetronic engine replaces the function of the throttle body by using infinitely variable intake valve lift. Valvetronic has its own computer housed in a separate unit away from the engine management system, networked through CAN network with the digital engine management system incorporating a 40-megahertz, 32 or 64 bit computer. Valvetronic reduces maintenance costs, lowers Exhaust emissions, improves cold start behavior, and provides a smoother running engine. It also does not need specific fuel grades or fuel qualities because of its fine atomization of fuel. Because Valvetronic allows the engine to breathe ... Get the whole story right here in this video... Enjoy... Amazon Printed-Books & Kindle: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dstripbooks&fiel d-keywords=mandy+concepcion Google Play Android APPs: https://play.google.com/store/search?q=mandy+concepcion&c=apps Amazon Video DVDs: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dmovies-tv&field -keywords=mandy+concepcion Barnes & Noble Nook: http://www.barnesandnoble.com/s/mandy-concepcion?keyword=mandy+concepcion&s tore=allproducts Apple iTunes iPad: http://itunes.apple.com/us/artist/mandy-concepcion/id449573393?mt=11
its show bmw valvetronic technology
Valvetronic disabled by disconnecting eccentric shaft sensor. No error on dash but on diagnose we can see valvetronic is put in limp mode home. Done on Malaysian assembled E46 318i 2002 BMW N42