new o2 sensor!! reset the pcm??
04-27-2011, 10:09 PM
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Year: 1987
Model: Cherokee
Engine: 4.2 .020 over
new o2 sensor!! reset the pcm??
I just installed a new o2 sensor and I'm wondering if I should reset the pcm or not??
04-27-2011, 10:20 PM
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Year: 1999
Model: Cherokee
Engine: I6 4.0
Disconnect both battery terminals and touch them together for about 15 seconds and it will take about 50 warm up cycles to relearn the system
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