YJ 4.2, 1987 Trouble with sensors of the intake - JeepForum.com
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Unread 08-11-2013, 07:32 AM   #1
Smejky
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Join Date: Aug 2013
Location: Prague, CZ
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YJ 4.2, 1987 Trouble with sensors of the intake

Hello guys, I have buy the old veteran Wrangler YJ 4.2 (year 1987) and now I have the trouble with the sonsors in the engine. Please do you know, which the sensors are on the photo (below)? These sensors were not connect, so I don't know the function of the sensors. There are also a lot of wires (different colours :-)) - please do you somebody have some electric schema of the connection? And do you know also the colour of the wire which is to the electric choke of the carburetor Weber 32/36 DGEV.

Thank you very much for your advices

Kind regards Smejky

cidla-1.png

cidlo-2.jpg

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Unread 08-11-2013, 07:40 AM   #2
Old4X
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1990 CJ7 
 
Join Date: Nov 2008
Location: Ga
Posts: 5,152
If you have replaced the OEM carb with a Weber, those sensors are useless now, just ignore them.
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Unread 08-11-2013, 07:46 AM   #3
Old4X
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1990 CJ7 
 
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http://home.sprynet.com/~dale02/list.htm

Your YJ is set up just like the late model CJ in this link. You should be able to find what you want here.
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Unread 08-12-2013, 05:52 AM   #4
jay-h
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1989 YJ Wrangler 
 
Join Date: Dec 2006
Location: , NJ
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#3 is the sensor for the temperature gage (at least on mine)
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Unread 08-12-2013, 10:50 AM   #5
dancytron
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1990 YJ Wrangler 
 
Join Date: Jun 2008
Location: st. louis
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First, check if this was done (the wiring part) http://www.jeepforum.com/forum/f8/ho...bypass-522262/

If not, do it. This will bypass the computer and make the sensors irrelevant.

When you say "choke on all the time" do you really mean even with the engine off. No, it won't work like that. Stock, it was triggered by an oil pressure sensor so it was only on when the engine was actually running. You could change over to a manual choke or you could set it up with a relay triggered to only supply power when the key is on.
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