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Unread 02-08-2002, 05:15 PM   #1
cj7paul
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Join Date: Feb 2002
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cj7 stalling problems

My 1985 CJ7 has a frustrating knack of stalling when it is idling at the lights. I think the problem is due to some component of the ridiculous emission control system that was built into this vehicle.
I have replaced the PCV valve system and many of the hoses in the engine compartment and all other vacuum hoses seem to be in the right place.
Many mechanics have looked at the jeep and all they can suggest is turning the idle speed up to a very high RPM (which frightens people at crossings).
Has anybody had a similar problem or can suggest a fix?

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Unread 02-08-2002, 05:55 PM   #2
ooze
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Location: chickamauga, ga
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faulty EGR valve?
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Unread 02-08-2002, 06:38 PM   #3
Bob K
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Generaly this problem is caused by vacuum leaks. One common problem area is the throttle plate shaft where it goes through the throttle body. Test by wiggling it for up and down or fron to rear movement or spray starting fluid at that area and see if your idle speed increases indicating a vacuum leak there. Have you tried the idle tube modification? It is described on the YJ board by BillyBadAss. It's a simple mod and allows the carb to compensate for lean running conditions. Try this link for the idle tube mod.:
http://www.jeepforum.com/cgi/ultimat...&f=14&t=000183
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Unread 02-08-2002, 10:58 PM   #4
bluebogger
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Bob K. had a very good reply, don't forget to check the choke operation and overall carb conditions. My CJ-5 had the same problem.
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Unread 02-08-2002, 10:58 PM   #5
bluebogger
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Bob K. had a very good reply, don't forget to check the choke operation and overall carb conditions. My CJ-5 had the same problem.
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