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post #1 of 7 Old 08-20-2013, 04:26 PM Thread Starter
tylerlinn09
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help

I have a 95 zj grand Cherokee I just put a tranny in it and went to start it and it ideals good till it warms up then it start to sputter and back fire and has no power when its in gear but in park I can rev it up and when I let off it sputters and back fires and just runs like **** if anyone knows what it could be it would be appricated

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post #2 of 7 Old 08-20-2013, 06:32 PM
gearheadnick
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My first guess is a bad O2 sensor. Unplug it and see if it runs ok.

My cylinder head overhaul: http://www.jeepforum.com/forum/f13/cylinder-head-r-r-picture-heavy-1348138/
My transmission overhaul: http://www.jeepforum.com/forum/f13/how-change-transmission-electronics-1560948/
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post #3 of 7 Old 08-21-2013, 07:42 AM
Myusername1674
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1995 ZJ 
 
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Location: Chattanooga
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Seams sorta like a sensor problem, does it do it in neutral? Maybe bad/dirty IAC? Might be the transmission, idk a thing about these transmissions except how to change the fluid. Is the tranny new or used?

95 FiveTwo ZJ, DD, Lifted, Locked on 35s, Build (in progress)

My 5.9 swap (in progress)

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post #4 of 7 Old 08-21-2013, 03:27 PM Thread Starter
tylerlinn09
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The tranny is used that came out of a jeep that the frame snapped on so it was good and the o2 sensor wasn't it what do u think about the coolant temp sensor being bad
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post #5 of 7 Old 08-21-2013, 03:48 PM
coralman
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1998 ZJ 
 
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Location: florida
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Damage the crank sensor or wiring while swapping trans?

Info on projects and repairs categorized by system
http://www.jeepforum.com/forum/f13/c...-faqs-2863665/

Originally Posted by HighLonesome
lol...if life is as a simple as a 5.9 making you happy, I'd say go ahead and buy it on impulse. ZJs are the way of Zen. Wax on, wax off
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post #6 of 7 Old 08-21-2013, 04:04 PM Thread Starter
tylerlinn09
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New crank sensor put in when tranny was changed
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post #7 of 7 Old 08-21-2013, 06:26 PM
ZeeJay1997
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1997 ZJ 
 
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what brand of crank sensor?
pinched wire is suspect too.
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