Inlet Camshaft Sensor M54 engine

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Bumpa
Joined: Fri 23 Jun, 2017 21:31
Posts: 58

  Z3 roadster 2.2i

Inlet Camshaft Sensor M54 engine

Post by Bumpa » Thu 28 Mar, 2019 17:32

Last night my 2002 Z3 2.2 was a pig to drive, continually stalling at junctions and with delayed response to the throttle. This morning its fine, but there is a fault code for the inlet camshaft sensor, which I have cleared.

Assuming I have to change the sensor soon, must I buy the expensive BMW part 12147539165 for £120, or will the Febi Bilstein part be good enough at a much more reasonable £26.69? What about Haas at £38.99 or Dephi at £84.99?

Incidentally, the car has always been easy to stall when reversing. Is that likely to be the sensor as well? The car has the "fly-by-wire" throttle, and I have assumed that was the problem. All these electronic gadgets rather baffle me.

mrscalex
Joined: Fri 13 Mar, 2015 09:14
Posts: 888

  Z3 roadster 1.9

Re: Inlet Camshaft Sensor M54 engine

Post by mrscalex » Thu 28 Mar, 2019 17:59

Aftermarket sensors tend to have a bad reputation. But I think this is a sweeping generalisation.

There must be some good ones out there. The trouble is it's difficult to pin down what they are and even when you find one because of the way these suppliers work it may or may not stay that way. Someone like Febi could well be buying in stock from China and labelling as their own. One week it could be from supplier A and worth buying, the next they could have changed supplier and it's cr*p.

I don't think you have too much too lose at £27 trying.
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2001 Z3 2.2 Topaz Blue (Trudy) - Keeper rebuilt from a write-off
2002 Z3 2.2 Titan Silver (Cookies) - Keeper rebuilt having been bought with a seized engine
2002 Z3 3.0 Sapphire Black (Peanut) - Keeper awaiting rebuilding having been bought as an abandoned project
Plus Willy, Kodak & Maycee - All 2.2 Sport projects. Yes, 6 is a lot of Z3s :)
Always happy to try and help with spares :)

wonderloaf
Joined: Mon 02 Aug, 2010 21:55
Posts: 507

  Z3 roadster 2.2i
Location: Basingstoke

Re: Inlet Camshaft Sensor M54 engine

Post by wonderloaf » Thu 28 Mar, 2019 20:43

I've also got a 2.2 and was experiencing the same issues as you a couple of years ago, and after reading god knows how many forum postings, etc decided to go the OEM route and changed both sensors. I've just looked at my receipts and the sensors were about £90 each so the cost differential was not as big as it is now so not as difficult a decision. From memory replacing the sensor(s) isn't that difficult so as mrscalex says at £27 a pop you could try an aftermarket sensor, you might get lucky. If I was in the same situation now think this is what I would do.
2001 Titan Silver 2.2 Sport

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Gazza
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Joined: Tue 04 Oct, 2005 21:58
Posts: 9414

  M roadster S54
Location: Romford Essex

Re: Inlet Camshaft Sensor M54 engine

Post by Gazza » Thu 28 Mar, 2019 22:14

I was told some years ago to always use OEM sensors due to differing signals.

I have used aftermarket wheel speed sensors and they breakdown pretty quick.

Delphi are a good brand, I would go for that.
Gazza

"Understeer is when you hit the wall with the front of the car, oversteer is when you hit the wall with the rear of the car. Horsepower is how fast you hit the wall and torque is how far you take the wall with you"

Z3 S54 M roadster Image, BMW Z1, BMW M3 CSL, Z4M Coupe
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Bumpa
Joined: Fri 23 Jun, 2017 21:31
Posts: 58

  Z3 roadster 2.2i

Re: Inlet Camshaft Sensor M54 engine

Post by Bumpa » Thu 28 Mar, 2019 22:42

I've found one made by NGK https://www.buycarparts.co.uk/ngk/13771140 That ought to be OK - what do you think? It is £38.85.

Is it likely that changing this sensor will make the car less easy to stall when reversing?

Mike Fishwick
Joined: Fri 19 Jun, 2009 11:27
Posts: 2017

  Z3 roadster 2.8
Location: Daglan, France

Re: Inlet Camshaft Sensor M54 engine

Post by Mike Fishwick » Mon 01 Apr, 2019 16:32

Try cleaning the sensor of any ferrous particles stuck to the magnet side before spending money! These sensors act like magnetic drain plugs, and attract any small particles worn from the timing chain and sprockets.

My old 2.8 has a cable throttle, and I used to have the problem of stalling in reverse, but since I moved the seat a little further forwards it has gone - I think it was the effect of twisting my body to the left, and therefore reducing the load on the pedal.
A Z3 is not just for Christmas - it's for life!

Howard Adams
Joined: Mon 10 Oct, 2016 16:39
Posts: 57

  Z3 roadster 3.0i

Re: Inlet Camshaft Sensor M54 engine

Post by Howard Adams » Mon 01 Apr, 2019 18:43

Hi, I had a similar problem with my Z3, and the fault code reader faulted the inlet sensor. I cleared the code twice and checked the connection. I replaced it will a Febi one and 3 years later it’s absolutely fine.. don’t wast your money on a genuine BMW one.
H

Bumpa
Joined: Fri 23 Jun, 2017 21:31
Posts: 58

  Z3 roadster 2.2i

Re: Inlet Camshaft Sensor M54 engine

Post by Bumpa » Mon 01 Apr, 2019 19:21

I've ordered a Delphi sensor for £30 from Aceparts on ebay. Delphi seem to have a good reputation. Thanks for your inputs.
Mike

wonderloaf
Joined: Mon 02 Aug, 2010 21:55
Posts: 507

  Z3 roadster 2.2i
Location: Basingstoke

Re: Inlet Camshaft Sensor M54 engine

Post by wonderloaf » Mon 01 Apr, 2019 21:08

Well if it cures the fault at least you can be confident you've found the problem (and solution)!
2001 Titan Silver 2.2 Sport

Bumpa
Joined: Fri 23 Jun, 2017 21:31
Posts: 58

  Z3 roadster 2.2i

Re: Inlet Camshaft Sensor M54 engine

Post by Bumpa » Thu 18 Apr, 2019 15:11

Update. The Delphi sensor came quickly and I have fitted it - not a difficult job, a bit fiddly but pretty easy. It has transformed the car. The throttle response is much crisper and it no longer wants to stall when reversing at low speed. RESULT. It's only taken 21 months to get to the bottom of this little issue. :colourful:

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