Part Identification - What is this part called? -
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post #1 of 7 Old 05-07-2014, 10:10 PM Thread Starter
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Part Identification - What is this part called?

I replaced my brake master cylinder today and accidentally broke off a little yellow sensor that was screwed into this little metal block that connects all the brake lines together and joins them with the master cylinder. I don't have access to a junkyard that will let me pull the part i need, and i have no idea what it is called or its part number to search for one on the internet. For the time being my friend and I rigged up a plug for where it screws into the block and it doesn't seem to be leaking right now. I would like to fix it properly though if possible.

I have a 93 Jeep Grand Cherokee 4.0L V6 4WD

Below is a picture of what I'm talking about. It's the little yellow thing in my hand. The threaded part was broken off so I'm holding it up near where it screwed into the metal box.

Any know the name of this part or its part number?

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post #2 of 7 Old 05-07-2014, 10:21 PM
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I believe that's just the switch that lights the brake warning light on your dash when you have a brake failure.
It's probably part of the proportioning valve assembly.

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post #3 of 7 Old 05-07-2014, 10:26 PM
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That's the brake pressure differential switch. It activates the brake warning lamp in the dash if there's a loss of fluid pressure.

EDIT - Kruzin got there ahead of me

I've checked the parts catalog for 1993, and it's not listed separately, so it looks like it comes with the combination valve package.
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post #4 of 7 Old 05-07-2014, 10:34 PM
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It is part of the proportioning valve, but I don't know the part number, I think it is a pressure sensor/sender... I can't find just the sensor, just the whole unit with the part attached

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post #5 of 7 Old 05-09-2014, 10:01 AM Thread Starter
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Thanks guys! Now that I know what it is called and what it does, the search can begin. I miss the days when i lived 5 minutes from a junkyard that let you pull whatever you wanted.
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post #6 of 7 Old 05-09-2014, 01:38 PM
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And just a head's up - you don't have a V6, you have an I6 (inline).

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post #7 of 7 Old 05-09-2014, 04:05 PM
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