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Unread 02-11-2014, 04:39 PM   #1
ratat98
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1990 YJ Wrangler 
 
Join Date: Jan 2011
Location: , Oklahoma
Posts: 104
Jeep dies when it wants too

Hey all,
My 90 YJ likes to die after I've been driving and take it out of gear to come to a stop. It does it randomly, and with no warning...is it time for a nutter bypass? It also idles like a drunk donkey when it's cold....

....don't ask me how I know what a drunk donkey sounds like.....

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Unread 02-12-2014, 02:26 AM   #2
Bigev
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1990 YJ Wrangler 
 
Join Date: Aug 2013
Location: Haverhill, Ma
Posts: 116
Possibilities are numerous, but first thing that comes to my mind is a vac. Leak.

Stethoscope and listen for a snake hissing... figured I would throw in a animal to my post as well
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Unread 02-12-2014, 02:35 AM   #3
JCashen
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1990 YJ Wrangler 
 
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If you still have the carter 2bbl it is possible you need to clean the venturi tubes. My 90 uses to die pretty much anytime I came to a stop or even just idling. Nutter didn't help but a weber did.

Check your choke and make sure it functions properly.

I'm sure some of the resident experts will chime in, they will be able to help a lot more than I can l.

Think of them as the silverback gorilla of JF.
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Unread 02-12-2014, 11:09 AM   #4
ratat98
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Choke is working good.. I do have the old carter and I know it needs to be gone through and cleaned. I think I'm going to do the nutter anyways and get me a weber carb eventually but I'm going to keep the carter as long as it functions. (Which may not be that much longer). I had thought about a vac leak if I do the nutter, it sounds like a vac leak won't be an issue correct?
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Unread 02-12-2014, 12:39 PM   #5
ratat98
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Location: , Oklahoma
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Quote:
Originally Posted by JCashen
Think of them as the silverback gorilla of JF.
Hahaha
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Unread 02-12-2014, 02:13 PM   #6
JCashen
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Vacuum leak is still an issue, however with the nutter the computer won't try dumping extra fuel when it reads lean at the o2.

There are several here who still run the carter with very good results. If your stock system is intact I'd try fixing it first, if all else fails than nutter/weber/mc2100 are easy enough.

Use a can of carb cleaner to check for leaks. If it smooths out the idle whatever you sprayed is likely the culprit.
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Unread 02-12-2014, 02:17 PM   #7
jsawduste
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Simple answer.......It`s female...........Any questions ??
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Unread 02-12-2014, 06:18 PM   #8
ratat98
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Location: , Oklahoma
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So if the vac leak is still an issue, what vac hoses do I need to keep after the nutter besides the obvious timing, brakes, and 4wd hoses?
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Unread 02-12-2014, 06:20 PM   #9
ratat98
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Quote:
Originally Posted by jsawduste View Post
Simple answer.......It`s female...........Any questions ??
but I already have one of those in my life! I don't need another!!
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Unread 02-12-2014, 06:26 PM   #10
ratat98
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I know..I keep posting on my own posts..
Could it be a collapsing vac line? I know a couple of the hard plastic lines were just replaced with rubber lines.
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Unread 02-12-2014, 07:49 PM   #11
Mark05059
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clean the tubes... they gum up and it doesn't get fuel to idle..
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Unread 02-17-2014, 08:28 PM   #12
ratat98
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1990 YJ Wrangler 
 
Join Date: Jan 2011
Location: , Oklahoma
Posts: 104
OK, I've cleaned up the jeep, put a new rotor and cap on dizzy, found the ECM bad, so I did a nutter job, and, I also cleaned the carb good. Now it runs awesome, BUT, it won't start easy at all if the engine is warm.... Any ideas? I've got the timing set to 8* on the mark.

Thanks!
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Unread 02-18-2014, 08:02 AM   #13
Que89YJ
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1989 YJ Wrangler 
 
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Location: Detroit, Michigan
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You need to adjust the timing. 8 is just where you start the timing at.
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