Along with the new sensor, you'll need a new pair of gaskets that join the upper to the lower intake manifold. (See pic #1, part #11) There are actually two of them needed and I belive the part number will give you both. I think this is the case because I was surprised that there were two gaskets in the baggy from the dealer. Later to find out I actually needed two.

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1. Disconnect the negative battery cable

2. Unplug electrical connector on throttle position sensor (Pic #2, Part #2)

3. Unplug electrical connector on idle air control valve (Pic #2, Part #9)

4. Use a small flathead screwdriver to remove the small vacuum hose running from the fuel pressure regulator, to the upper intake manifold.

5. Unscrew throttle cable cover (Pic #2, Part #8

6. Disconnect throttle cable.

* Note, my car does not have ASC+T, or cruise control, if yours does, you might have to unhook and extra throttle cable or something

7. Unscrew main intake hose from throttle body

* You might want to clean the area where the two intake halves meet, so dirt/debris doesn't fall into your intake. Compressed air would work great.

8. Unscrew nuts/bolts holding upper to lower intake manifold halves. (Pic #1) There might be an extra brackets somewhere holding the upper half.

9. Pull the upper half away, I believe there is a vacuum hose still attached to something, so just let it bend a bit and set the upper half somewhere out of the way. Actually I think it's attached to the crank case vent valve (Pic #3, Part #16)

*Note, doing this caused the large vacuum hose running from the valve cover, to the crankcase vent valve (Pic #3, Part #13) to break. It was already very brittle, so I had to buy another

*Look at Pic #1 and you can see how there are layers in-between the two halves. It goes: upper half, gasket, flange (Pics #1, Part #12), gasket, lower half.

10. Gently stuff some clean rags into lower intake manifold openings, to prevent debris from falling into the intake manifold.

11. You should now have access to the plug on the old camshaft sensor. Unplug it, then unsrew the old sensor from the block.

12. Coat the o-ring on the new senor with some engine oil, then rebolt it into the block. Torque?? Do it very lightly. Plug in the new sensor.

Installation is reverse.

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* REMOVE RAGS that you stuffed into the intake manifold!

* Be cautious when bolting the two manifold halves back together because you are screwing into aluminium. I don't know the BMW torque values.

* Replace manifold gaskets.

* If your car runs very roughly when you're done (like mine did) you probably tore a vacuum hose (like I did). Mine was 8 years old and some hoses were quite brittle.

PICTURE # 1

PICTURE #2

PICTURE #3

Images from: www.realoem.com/bmw

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