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Discussion Starter · #1 ·
Whilst under the hood, I took a few pictures and would like to know what they are. The pics are pretty big so you can have a real good look ;)

http://whistlerbc.net/jp/loose1.jpg <-- It's allways just been hanging there.

http://whistlerbc.net/jp/loose2.jpg <-- isn't there supposed to be a vaccum line attached to there?

http://whistlerbc.net/jp/carb.jpg <-- What's that sucker in the box? It was holding my throttle almost wide open the other night. I had to unscrew the screw it was pushing on a million turns for the engine to calm down.
 

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Superfly
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Rude said:
Whilst under the hood, I took a few pictures and would like to know what they are. The pics are pretty big so you can have a real good look ;)
http://whistlerbc.net/jp/loose1.jpg <-- It's allways just been hanging there.
I'd guess it's the socket to which the diagnostic computer would attach.


http://whistlerbc.net/jp/loose2.jpg <-- isn't there supposed to be a vaccum line attached to there?
Yes, it should either go to the tcase vacuum switch or the front axle disconnect, IIRC.

...lars



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Discussion Starter · #3 ·
Thx Larry, I'll dig around the manual with your leads and see if I that's them.
 

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Rude -

If you want, I can go through my FSM tonight and look up the electrical stuff for you. I don't recognize the first connector, and the vac line in the second pic might actually be intentionally like that. The front axle vac system does have an air inlet, and that might be it. I dimly remember the same thing on mine.

The thing in the last pic is the sol-vac. It controls the idle speed, based on engine vacuum and a signal from the computer.

Here's some more info on it:
http://www.off-road.com/jeep/tech/258bbd/solvac.htm

There's tons more info on that site about the 258; you might want to bookmark it for future use.

Chris
 

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Rude -

Did a little research. The connector in your first pic would be connected to the A/C low pressure switch, if your Jeep had Air Con.

Feel free to continue ignoring it :soso

Chris :read
 

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Discussion Starter · #6 ·
NIce cwate, thx. And no, I don't have a/c, so I'll keep it hanging.

As for the other post about the sol-vac, I spent all day testing my carb and everything that connects to it (sol-vac et al). I stopped by a few shops, talked to my dad's old mech in Alberta (my father owned the yj before I) and it turns out my carb is fscked. I allways knew it was, but it turns out that a new carb would be easier than fixing everything. Any thoughts?
 

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Rude -

I was real happy to see that whole engine (and carb) get hauled away by some poor schmo after my engine swap. I don't know anything about tuning them, but I can tell you that they're notorious for vacuum leaks and clogged fuel passages.

If I were you I'd get my hands on a rebuilt unit, install it, and then have it professionally tuned. Another option is to go with the older carb (YF) that the CJs used, which is apparently a lot more reliable, and has no computer control. You might need to swap intake manifolds at the same time, but that's not a huge problem.

There is an EFI kit for that engine, but by the time everything is said and done you probably could have swapped in a used 4.0L for the same $$

Chris
 
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