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injector swap?

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Old Sep 5, 2011 | 08:59 PM
  #1  
engnman's Avatar
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From: Grandview,TEXAS
Year: 1996
Model: Cherokee
Engine: 4.0
Default injector swap?

I have a 96,4.0 5 spd,4x4.Installed 703's and reset comp. Now it runs very rich and check engine light comes on,what next?
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Old Sep 5, 2011 | 10:41 PM
  #2  
digger21's Avatar
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From: parker, co
Year: 1996
Model: Cherokee
Engine: 4.0 HO
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Dont quote me on this since ive never done this swap,
but I believe it takes 30 starting cycles for the computer to relearn the new injectors.
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Old Sep 5, 2011 | 11:17 PM
  #3  
Veeb0rg's Avatar
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From: Glen Burnie, MD
Year: 2001
Model: Cherokee (XJ)
Engine: 4.0l
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50 cycles, and Check to make sure none of your new injectors are stuck open.
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Old Sep 6, 2011 | 07:38 AM
  #4  
no rdplz's Avatar
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From: Virginia Beach by way of Michigan
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If you reset the ecu and are still running rich you probably have a fouled spark plug (causing the CEL). Pull the injectors and test each one (9V battery and wire, you should hear a "click" when the injector gets power) to make sure none are stuck open. Also pull your plugs to make sure none are fouled out.
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Old Sep 7, 2011 | 07:59 AM
  #5  
engnman's Avatar
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From: Grandview,TEXAS
Year: 1996
Model: Cherokee
Engine: 4.0
Default

Found open injector and swapped it out ,and all is well. Thanks
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