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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 02-18-2009, 12:33 AM   #61
YOnpds
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Update: Replaced my sensor today. Car is back to normal! Woohoo!

Thanks everyone for the DIY.

Oh yeah, I got the sensor and "o" ring from one of our sponsors here; www.bimmersecialist.com

My part came in two days and the price for OEM BMW sensor was only $100.
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Old 04-05-2009, 04:21 PM   #62
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thank you for this DIY just did mine today. Very easy but take your time.
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Old 04-09-2009, 05:56 PM   #63
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Doing mine tomorrow!
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Old 07-14-2009, 07:30 PM   #64
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thanks for the info
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Old 10-15-2009, 06:15 AM   #65
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Thanks as well. I replaced my intake camshaft sensor with this DIY and it took me about 2 hours. The hardest part for me was threading the connector back to the connection for the wiring harness. I also lost (and thankfully found) the metal clip that secures the sensor's connector to the wiring harness. Don't lose those little metal clips. I called the dealer to see if I could just get a replacement clip after it slipped from my fingers while trying to reattach it to the wiring harness. The dealership told me that BMW doesn't sell the individual clips and I'd have better luck at a junk yard unless I wanted to buy a new wiring harness (yeah, right...) Anyway, I got lucky and found the clip. Just a warning to be careful with those clips...
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Old 10-15-2009, 07:48 AM   #66
NicB.
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I did mine a couple weekends ago. Definitely recommend tying a piece of twine to the bottom end of the CPS sensor cable and then pulling it out at the top of the engine. Then you just tie on the new one and pull the string back the other direction.

The hardest part for me was removing the VANOS solenoid. I couldn't believe how tough that sucker was to budge! Other than that, piece of cake.

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Old 10-16-2009, 05:16 PM   #67
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That's a great idea about using twine. I wish I had thought of that.
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Old 10-31-2009, 07:20 PM   #68
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Can i just check that when you reinstall the Vanos that you tighten until you hear an audible click, and not to a specific torque setting?
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Old 11-01-2009, 05:24 PM   #69
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I don't recall hearing an audible click when tightening it. Perhaps someone else can chime in. I just made sure is was fairly snug. I haven't had any problems.
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Old 11-05-2009, 05:33 PM   #70
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where are you guys ordering it from? im not sure if i should get it from tischer or bavauto
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Old 11-06-2009, 07:00 AM   #71
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Buy it from Tischer or a local dealer. BavAuto is cheaper, but it's an aftermarket part without the 2-year BMW guarantee.
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Old 11-24-2009, 01:48 PM   #72
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I'm going to be doing this, this weekend.
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Old 11-24-2009, 05:20 PM   #73
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I'm going to be doing this, this weekend.
It's easy stuff
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Old 12-01-2009, 05:43 PM   #74
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Thanks OP!!!!

Everything went well. However there was a point when I took out my old camshaft sensor and it looks a bit different from the one I ordered from tischer, but it still fits and everything is working like a charm. I was a bit scared at first, thinking that I got the wrong one.
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Old 01-12-2010, 10:34 PM   #75
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I've been having rough idle for awhile, and then periodically my car would stall taking off from a red light, then it started having a hard time starting, then the stalling got worst. Check engine light gave code PO340 which was the CPS, which is the CPS on the exhaust side (on the front of the engine block, passenger side). Took about 30-min to swap out. 5mm allen wrench needed, and there's only one bolt holding it on. Be sure to oil the new o-ring going on before pushing on. This cured my problem. No more code and driving great. I was very surprised by the power gains. I think my car has been running weak for some time now, and maybe I just started getting use to it.
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Old 01-14-2010, 04:14 PM   #76
Chocolate Lab
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I need to do this. Got the 3040 code (IIRC - Autozone code sheet is at home) and have all the symptoms of stalling and low power at takeoff, but am wary of doing this. I change the oil and do routine maintenance on mine but this seems more complicated. Is the hardest part getting the solenoid off? It looks like 5mm L-shaped allen wrenches are cheap at Harbor Freight, and I have some stiff wire to route the cable.

I dunno, for some reason I'm hesitant to do this. But my car has had this problem for a few months now.
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Old 02-08-2010, 11:17 PM   #77
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Quote:
Originally Posted by dancendan View Post
I've been having rough idle for awhile, and then periodically my car would stall taking off from a red light, then it started having a hard time starting, then the stalling got worst. Check engine light gave code PO340 which was the CPS, which is the CPS on the exhaust side (on the front of the engine block, passenger side). Took about 30-min to swap out. 5mm allen wrench needed, and there's only one bolt holding it on. Be sure to oil the new o-ring going on before pushing on. This cured my problem. No more code and driving great. I was very surprised by the power gains. I think my car has been running weak for some time now, and maybe I just started getting use to it.
Isn't P0340 for the CPS on the INTAKE side, not the EXHAUST side?
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Old 02-15-2010, 08:20 PM   #78
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camshaft sensor

Just want to make sure this DIY is for my problem I'm having. I have the P0340 code as well and it goes away after two days. The car has trouble accelerating and has trouble idling sometimes as well. The code said Camshaft position sensor A - Bank 1 circuit malfunction. Is the DIY on the first page supposed to fix this problem? I just want to make sure it isn't the exhaust sensor. I plan on getting it from bavauto, part number: 12 14 1 438 081. Thanks in advance.
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Old 03-14-2010, 10:11 PM   #79
leeroy74
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camshaft intake sensor

Had the same issue... replaced the part with a aftermarket bilstein part #12 14 1 438 081 save me some money! My problem is the SES light is still on any thoughts on reseting the light
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Old 03-21-2010, 10:41 PM   #80
UtahG8R
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Just replaced my cam sensor, much easier than it looked, the info here made it much easier. Thanks for the great write up.
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