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Unread 06-17-2008, 01:46 PM   #1
Toocrazy2care38
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88 jeep shuts off

my 1988 jeep has a 258 6cylinder and t-5 tranny. it has some electrical problems but other than that the only problem is that when it reaches 3500RPM's the engine wants to shut down. it only does it when in gear, does anyone have any idea what the problem could be?

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Unread 06-17-2008, 10:00 PM   #2
timatoe
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Maybe ignition control module???? That's only a guess with the limited info.
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Unread 06-17-2008, 11:15 PM   #3
Toocrazy2care38
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what more info do you need? it only does it when its in gear. i van put it in neutral and rev it up and it wont do it but in any gear it will.
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Unread 06-18-2008, 03:36 AM   #4
timatoe
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Originally Posted by Toocrazy2care38 View Post
what more info do you need?
Fill out your profile. Is is a stock engine? Has it been Nuttered? Do you have a different distributor setup, HEI or TFI? All of these may have some effect. For starters a bone stock 258 is going to want to run at 3500 rpm, it don't like to be above 3K. Read up on the "Nutter Bypass" and try that.
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Unread 06-18-2008, 06:41 AM   #5
YJ Rider
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I had the same thing until I did the nutter, especially the part about replacing the advance spring on your distributor. That will change your RPM range and allow you to use the rest of your tachometer your Jeep has never used.
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Unread 06-18-2008, 10:22 AM   #6
timatoe
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Also, I should have been more specific before.... It's not so much the 258, but the stock carter carb that's your limiting factor. Again, research the Nutter Bypass.
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Unread 06-18-2008, 11:38 AM   #7
Toocrazy2care38
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i was going to put a new weber carb with a carter 2 barrel... whould that help?
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Unread 06-18-2008, 01:41 PM   #8
YJ Rider
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I did that and while it was an improvement it did not help in that department. The nutter with the TFI upgrade is the best advice I can offer for that issue and would recommend it to anyone with a carb'ed YJ
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Unread 06-18-2008, 02:17 PM   #9
TorqueWrench87
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I had that problem with my jeep.. I did the nutter bypass and got a new ignition module and it fixed it. I still would like to upgrade the carb to a weber for better performance.
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Unread 06-18-2008, 10:25 PM   #10
timatoe
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Quote:
Originally Posted by Toocrazy2care38 View Post
i was going to put a new weber carb with a carter 2 barrel... whould that help?
To do this you will have to do the Nutter Bypass. I can't say it anymore than I already have, RESEARCH THE NUTTER BYPASS.
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