View Full Version : Anyone have an egr with this doohickey?

October 16th, 2017, 17:55
swapped my 87 intake with an 88 and the newer one has this extra piece as well as the egr has an extra vaccum nipple. Anyone know what it does and how it's hooked up? https://uploads.tapatalk-cdn.com/20171017/7e12299062b9bbae11b0d6bfbdf4cf4b.jpg

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October 17th, 2017, 04:49
Here is the best diagram I managed to find.


It is called a Transducer.

Found another diagram.


October 17th, 2017, 06:19
It's an egr transducer. It does magic stuff. The egr solenoid should hook up to the left side. The right side goes to egr valve. And I think the middle is hooked to the exhaust @ egr valve. At least this is how I remember it being connected.

October 17th, 2017, 17:44
It's a back pressure sensor , the fitting in the middle plugs into the exhaust port from the EGR valve .

October 18th, 2017, 12:56
Thank you guys! Can anyone confirm which side of the egr solenoid it hooks to? the port towards the front of the jeep or the back? Most of my plastic lines are broke and patched with rubber lines and I had them all off. Want to make sure I have it hooked up correct.

October 18th, 2017, 13:30
It should show on the diagram on the firewall.

October 18th, 2017, 13:39
It should show on the diagram on the firewall.

Huh? Are you sure? All I see is dirt and oil? (J/K Thanks, I'll check when I get home)

Green XJ Jeep
October 18th, 2017, 14:18
I dont think it matters as long as the bottom port (top in your pic) is hooked up correctly

October 20th, 2017, 15:46
The doohickey should say vacuum side or egr port