Wheel sensor recommendation

Kenhayes247

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Hello all,

At the moment I am chasing down an ABS/ASC fault something I did not have before I started an overhaul of my car.
During the overhaul I changed all for wheel sensors, the front are Delphi and the rears are ATE. My fault code reader tells me I have a problem with the Front L & R sensors along with the rear left.

The obvious (but not neccesarily financial sensible) thing to do is change the sensors, I am not ruling out OEM but at £400 plus for all 4 its not my first choice.
Live stream by the way tells me my car is receiving rotational data from the front sensors and rear right but still registers the front and rear left as faults.

Looking at various other manufacturers of wheel sensors there are loads that fit my car, however its becoming confusing as to what would be the correct ones. I generally take my recomendations for alternative parts directly from the BMW website that lists alternate makes alongside thier originals but this is still a little bit confusing.

My car is a 2001 Z3, 1.9M43 with 118HP. It has ASC fitted.
When looking at sensors for that build year there are sensors that fit but for cars with ESP, or without DSC or nothing listed at all. I haven't found front or rear sensors that mention ASC.

I would like to match the front and rear wheel sensors from the same manufacturer, can anyone assist with a working recomendation? Or advice regarding whether i should chose with or without ESP/DSC.

Other than myself I hope i haven't confused anyone :)
 

colb

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Fronts using oem part number on Autodoc brought these up
Cars with DSC use a different sensor part number
Rears using oem part number on Autodoc brought these up
Cars with DSC use a different sensor part number
If you are going to replace the sensors I have used RIDEX and STARK brands from Autodoc and had no problems with them far easier on your wallet when it comes to this type of sensor.
 

t-tony

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One thing worth trying is taking the connectors apart and spraying the insides of the "socket" with silicone spray so that the plug slides easily into the rubber socket. I've had this before with pad wear wires still showing faults after fitting new wear cables, and after doing this the faults were gone. It may not help, but worth a try at the price?

Tony.
 

137699

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I had a NSF sensor fail after fording a deep puddle - at the time the research I conducted suggested that many had bought aftermarket sensors and had issues with them so I played it safe and bought from BMW - very glad I did as apparently there are potentially 3 different connectors on these sensors depending on which ones they used, so they supplied wiring harnesses for all 3 and allowed me to return the two I didn't need so that the job got done first time.

So I would say stick with genuine - but as you say, if you're replacing all four that's not so cheap...
 

Kenhayes247

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Well, thank you all for the replies. Colb - I am a user of AUTODOC as well, and having looked at the links you sent using the original BMW part numbers it seems I have the correct Delphi sensors for the front. My rear sensors are ATE which AUTODOC doesn't list as a replacement so I will go and check the ATE part numbers.

t-tony - I will do as you suggested and go spray the contacts on all sensors. I may have already done so a while back but it cannot hurt to double check.

This may be a silly question but when fitting the rear sensors which have 2 holes, which hole does the bolt go through for left and right fitting. If the sensor is bolted on using the wrong hole I assume the sensor head is not aligned 100% with the reluctor ring?
 

t-tony

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Never seen one with 2 holes Ken, do you have any pictures. The reason I suggested silicone spray wasn’t for the contacts directly (ie for bad contact) but to make sure the plug and socket were fully connected.

Tony.
 

Kenhayes247

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Hey Tony,

Apologies if I have caused a bit of confusion. I know you mean the grey plugs that join the sensors to the car.

The actual rear sensors have 2 holes is what I mean
 
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t-tony

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Yep, but as I said I've not seen an ABS sensor which had 2 mounting holes for the hub.

Tony.
 

t-tony

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Not 2 holes in the hub, 2 holes on the sensor. As i asked above depending on which side its fitted, does the bolt go through the left or right of the holes on the sensor
That's what I was getting at Ken. I've never seen a wheel sensor with 2 fixing holes before. I don't see why they would make one like that. If you measured the distance between the centre of the fixing holes and the centre of the sensor it doesn't look as if there is a difference?

Tony.
 

Kenhayes247

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Well, initially I was following instructions from pelican parts on how to fit the rear sensors and it's they who stated that dependent on the side the sensor is fitted would also decide the bolt hole on the sensor you would use.
Trouble is, their pictures and directions are not particularly good in this instance.
I certainly understand what you are saying but why have 2 holes then? Other manufacturers may also make use of these but I can't really seeing them specify fitting 2 bolts to secure it surely.
 
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