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Unread 07-31-2013, 10:19 AM   #1
joespanova
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My 89' YJ is missing something..........

The previous owner ( which one who knows ) decided to remove some device which is near the battery with about 8 wires ( which are now connected to nothing ). These wires are coming from the main wiring harness in the plastic sleeve.
What WAS mounted here? Anyone have a clue . The 2 relays (?) are still mounted next to the battery , but apparently there was something else electrical , mounted near the battery?

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Unread 07-31-2013, 10:29 AM   #2
bpounds
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If it's on the outer side of the battery, that might be the diagnostic connectors which are missing. No big loss there, since they are not OBD anyway.

On the firewall toward the engine side of the battery, the starter solenoid has a bunch of wires connected to it, but I don't see how that could be missing.
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Unread 07-31-2013, 12:36 PM   #3
jbrown73
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pic?
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Unread 07-31-2013, 03:01 PM   #4
jsipe007
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Pics would help. If it runs fine, my guess is that it is the diagnostic plug as bpounds suggested.
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Unread 07-31-2013, 03:19 PM   #5
Rproject
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OP, what do you think is missing? Here are a few pics of the same area in my '87.






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Unread 07-31-2013, 03:32 PM   #6
bpounds
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Perfect pictures. Those yellow caps are what I was referring to. As I understand it, those are not OBD anything. But they are diagnostic, and various sensor voltages can be read directly there. That's why I said no big loss if you don't have those connectors, but you would want to be sure that the remaining wires cannot short out on something.
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Unread 07-31-2013, 03:53 PM   #7
joespanova
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OK , sorry I took so long to get back...I'll get pics later if ness.
The connectors with the caps , as shown in the pics , are there and still wired as OEM. The OTHER pair ( black in the pic ) are NOT. This bundle of 8 wires w/ spade terminals has 1 ( or poss. 2 ) heavy red wires and its evident that one of them got hot ( shorted ) at some point. These wires all come out at the same point as the "diagnostic terminals?" with the caps removed in pic.
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Unread 07-31-2013, 04:06 PM   #8
Rproject
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So, OP, what you're saying is that these two relays are not present in your engine bay?
img_20130731_155905_849.jpg   img_20130731_155939_867.jpg  
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Unread 07-31-2013, 04:10 PM   #9
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If that's the case, look at this thread: http://www.jeepforum.com/forum/f12/plug-does-1522824/

You'll see that one of the relays is the fuel pump relay!!!
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Unread 07-31-2013, 04:16 PM   #10
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Fuel pump is mechanical. But that thread is a good one anyway, and it appears those relays would be 1) manifold heater relay and 2) idle speed up relay. Jeep would run fine without those, but I can't guess why someone removed them.
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Unread 07-31-2013, 04:19 PM   #11
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Quote:
Originally Posted by bpounds View Post
Fuel pump is mechanical. But that thread is a good one anyway, and it appears those relays would be 1) manifold heater relay and 2) idle speed up relay. Jeep would run fine without those, but I can't guess why someone removed them.
You're right. I don't know what I was looking at. One too many hits with the snake, as the Genie once said.
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Unread 07-31-2013, 06:51 PM   #12
joespanova
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Quote:
Originally Posted by Rproject View Post
So, OP, what you're saying is that these two relays are not present in your engine bay?
Correct
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Unread 07-31-2013, 06:56 PM   #13
joespanova
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Quote:
Originally Posted by Rproject View Post
If that's the case, look at this thread: http://www.jeepforum.com/forum/f12/plug-does-1522824/

You'll see that one of the relays is the fuel pump relay!!!
Thanks ....I like it!
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Unread 07-31-2013, 10:39 PM   #14
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Quote:
Originally Posted by Rproject View Post
You're right. I don't know what I was looking at. One too many hits with the snake, as the Genie once said.
Aladdin reference. Love it.
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