1998 4.0 sputter? - JeepForum.com
 
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post #1 of 2 Old 06-26-2012, 12:03 AM Thread Starter
rileydeadmarsh
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1998 TJ Wrangler 
 
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1998 4.0 sputter?

i have a 1998 jeep tj wrangler with a 4.0l and it sputters when the motors cold, but when it warms up it stops? i have changed the mapp sensor the catalytic converter the throttle position sensor and the idol position sensor! i need some help! maybe o2 sensors??

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post #2 of 2 Old 06-26-2012, 08:50 AM
Mishimoto
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Do you have a check engine light on? Those will come on sometimes with bad O2 sensors, should be a P013x (x depending on what the location is of the O2 sensor). Have you tried pulling codes yourself using the KOEO method?
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4.0 ho , engine problem , sensor , sputtering , wrangler tj

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