WahooSteeler Posted November 9, 2017 Share Posted November 9, 2017 Will a fuel sending unit from an 86 2.8 work in an 88 4.0? I'm guessing not because of carbureted vs. fuel injected. If not, can it be rebuilt with new pump etc and work? 86 model is out of a 23.5 gal tank and would go in the same size on the 88. Link to comment Share on other sites More sharing options...
Green Mesa XJ Posted November 9, 2017 Share Posted November 9, 2017 I don’t know about MJ fuel senders on XJ the 86 to 90 senders have the same plug and read the same. The 86 carbureted is missing the wire for power in its plug, but the three prong plug stays the same until the mid nineties. However the 91-95 senders read backwards on the 84-90 jeeps Sent from my iPhone using Tapatalk Pro Link to comment Share on other sites More sharing options...
Pete M Posted November 9, 2017 Share Posted November 9, 2017 interesting idea. carbed MJs didn't have a pump in the tank so I'm not sure if the piece in the tank will accept one. Link to comment Share on other sites More sharing options...
HOrnbrod Posted November 9, 2017 Share Posted November 9, 2017 9 minutes ago, Pete M said: interesting idea. carbed MJs didn't have a pump in the tank so I'm not sure if the piece in the tank will accept one. It won't. Here's a pic of a NOS 86 23-gal MJ fuel sending unit. There's nowhere to mount the pump. Link to comment Share on other sites More sharing options...
Pete M Posted November 9, 2017 Share Posted November 9, 2017 well, phooey on that then. Link to comment Share on other sites More sharing options...
Jeep Driver Posted November 10, 2017 Share Posted November 10, 2017 I'm going to get that same '86 sender/pickup for my '88, external pump. Link to comment Share on other sites More sharing options...
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