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Author Topic: engine missing  (Read 813 times)

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Offline new2jeepguy

  • Budget Lift
  • Posts: 143
engine missing
« on: January 16, 2012, 11:53:45 PM »
my 97 cherokee  4l   if I try to accelerate and put my foot in it,  it misses and sputters, cuts in/out  .   exhaust pipe is black and sooty like an olkd engine would be with the choke stuck  like its running real rich          any ideas?
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Offline FiEND

  • Talks waaay too much!
  • Posts: 3775
  • Wrecking Ball
Re: engine missing
« Reply #1 on: January 17, 2012, 12:18:17 AM »
Could be a sensor could be plugs and wires etc... plugged cat or missing cat or wires to exhaust sensors.  Maybe all of the above maybe none
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1Wide2High
ILV2FRT
'97 TJ [sold]
'17 JK Rubicon

Offline apeman

  • Talks waaay too much!
  • Posts: 1012
  • not as grumpy
Re: engine missing
« Reply #2 on: January 17, 2012, 12:34:36 AM »
My 99 did the same thing. Its your upstream oxygen sensor. Swap in a new one and reset your computer and I bet it is good to go.
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Getting grumpier every day.
99 XJ - It's got sum stuff ,Noel free stuff..
98 ZJ - It's just ugly, but bigger than your Rubi

Offline mike s

  • UberWheeler
  • Posts: 361
  • Good times!
Re: engine missing
« Reply #3 on: January 17, 2012, 07:29:31 AM »
Chrysler relies heavily on O2 sensor readings for fueling, any hint of black in tail pipe means it time to replace it. If you've already replacedit you have other problems, but if you haven't yet, likely it'll fix it right up.
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'94 YJ, 2.5" RE, 1"BL on 35"s, 8.8 w 4.88
oldEnuff2NObetter

but still can't help myself
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