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Old 04-08-2012, 06:46 PM   #1
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Default Is there a way to verify a hall sensor type?

I needed a hall sensor for my driveshaft speedo pickup for my Racepak. I went to my local auto parts store and bought a BWD "cam position sensor" off some buick that will fit size wise. It is a 3 wire sensor, and it is likely a hall sensor which is what I need. Is there any test I can do to verify it's type without a scope? Also, it does not have a pigtail only imbedded pins. So I need to figure out which wire is the 5vRef, which is the output and which is the ground.

Any help?
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Old 04-08-2012, 08:23 PM   #2
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Have you tried searching the part number on the internet to find out if it's a hall effect? I know the sensors on my buddy's northstar are coil style. They are more like an abs sensor that reads cut out notches in a wheel.

Here is what you need with a simple bracker I guess.
http://www.diyautotune.com/catalog/h...sor-p-489.html
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Old 04-08-2012, 09:20 PM   #3
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Yeah I have. It just says cam sensor. I think my neighbor may have a scope. I'll check.
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Old 04-08-2012, 09:21 PM   #4
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Yeah I'm aware of DIY's sensor, thing is I need it now not in a few days. I have to do emissions and if my speedo does not work I will fail. And I need to get my car on the road by wed.
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Old 04-08-2012, 09:53 PM   #5
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If it is three wires then it probably is a hall effect, only problem is if it switches with a flying magnet or ferrous material and the pinout... post a picture.

Oh I just saw no pigtail... well a commonly used convention is ground on the left, then signal, then power... but it really could be anything.

Also, youll need a 1k ohm pull up between power and signal if the racepak does not have it.

Just swap the pins around and look for a signal on your multimeter, if connected right the signal output will show 5v normally and pull to ground when a tooth is in front of it. The sensors can usually survive being connected wrong while you experiment.
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Old 04-08-2012, 09:56 PM   #6
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Yeah I just played around with it on a spare battery and my multimeter. A few times I got the full 12V without even putting a magnet to it, but I couldn't get it to jump when it was reading like 0.05v without a magnet there.
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Old 04-08-2012, 10:05 PM   #7
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You positive it is triggered by a magnet? You gotta make sure your using the south pole too.

I just edited my last post too.
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Old 04-08-2012, 10:19 PM   #8
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I belive so.
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