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Unread 05-07-2014, 09:10 PM   #1
jgphreaky
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1993 ZJ 
 
Join Date: Feb 2014
Location: rincon, pr
Posts: 7
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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Unread 05-07-2014, 09:21 PM   #2
Kruzin
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1993 ZJ 
 
Join Date: Aug 2007
Location: Casper, WY.
Posts: 3,165
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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Unread 05-07-2014, 09:26 PM   #3
AVR2
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1993 ZJ 
 
Join Date: Apr 2007
Location: UK
Posts: 2,278
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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Unread 05-07-2014, 09:34 PM   #4
Sourlemon
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1996 ZJ 
 
Join Date: Jan 2014
Location: mercer island, washington
Posts: 95
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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Unread 05-09-2014, 09:01 AM   #5
jgphreaky
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1993 ZJ 
 
Join Date: Feb 2014
Location: rincon, pr
Posts: 7
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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Unread 05-09-2014, 12:38 PM   #6
Mickey_D
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1997 ZJ 
 
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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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Unread 05-09-2014, 03:05 PM   #7
dusterdude
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1996 ZJ 
 
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Try carpart.com
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