What am I missing-ABS Deceleration Sensor??

[E30andy]

Hey guys....I am missing something in my engine compartment. Its in front of the fusebox, you can see it on the red car, but not in my black car, in the pictures attached.


What is it I am missing?

Thanks!

[spdracrm3]

That's the decel sensor for ABS

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[E30andy]

That's the decel sensor for ABS

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Sounds important! What does it do?

[spdracrm3]

Sounds important! What does it do?

ABS Unit sends a.signal to Engine module during decel (there is a mercury switch in this sensor to determine decel) engine module opens up idle air motor to reduce engine braking and thereby reduce chance of an engine braking induced skid (which on an AWD IX would be all four wheels,and dangerous)

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[E30andy]

ABS Unit sends a.signal to Engine module during decel (there is a mercury switch in this sensor to determine decel) engine module opens up idle air motor to reduce engine braking and thereby reduce chance of an engine braking induced skid (which on an AWD IX would be all four wheels,and dangerous)

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Cool thanks! Not sure why mine is missing, but is this something I can just buy and plug in and be good to go? I see a used one on eBay for $70.

[spdracrm3]

Cool thanks! Not sure why mine is missing, but is this something I can just buy and plug in and be good to go? I see a used one on eBay for $70.

I would think of the plug is there you should be able to rivet a sensor in the correct place/orientation and have it work. Assuming rest of ABS is there and working (is the ABS light on ,just curious if it sets a code of this sensor is missing?)

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[E30andy]

ABS light does come on while driving. Thought it was just the sensor but now thinking it could be this.
Don’t think the wire is there. Does the other end plug into the ABS unit or to a computer somewhere else?

[spdracrm3]

ABS light does come on while driving. Thought it was just the sensor but now thinking it could be this.
Don’t think the wire is there. Does the other end plug into the ABS unit or to a computer somewhere else?

Not sure if it's a separate harness or part of the main harness on an IX,never had to pull harness out of one but the sensor goes to ABS then a sinal is sent to ECU on a single wire.
What year is the car that's missing sensor. Wonder if it wasn't on the early or Euro cars.

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[E30andy]

It's a 1989, pretty sure it's supposed to be there from looking at pics of other 1989 engine bay pics on the web.

[E30andy]

Here’s another pic of the spot where the sensor should be. Notice the cut wires? Could that be where the plug for this sensor originates from?

Could someone take a pic of the wiring for this thing so I can tell what’s what on my car?

Thanks guys!!

[E30andy]

Anybody out there?

Just need a pic of the sensor/plug/wiring to compare with mine...

Thanks Guys!

[TAC]

I have an '89 IX as well. Hope this helps...

IMG_2523 by [url=https://www.flickr.com/photos/159390714@N04/]

IMG_2524 by [url=https://www.flickr.com/photos/159390714@N04/]

[E30andy]

Yep, exactly what I needed TAC! Thanks!!....looks like a previous owner cut out the sensor for some reason. Hopefully I can find a used one with the connector and splice it back together and be back in business.

[Kershaw]

Does your ABS work without it? Slam the brakes and find out.

[E30andy]

Does your ABS work without it? Slam the brakes and find out.

Good idea, never even though of that!
Will do and report back...