Question about 1989 Jeep Cherokee
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Posted on Jan 02, 2017
any leaks in intake or exhaust upstream of the sensors, sparkplug
condition and engine controls/sensors for out of range operation
(including fuel pressure and condition of regulator)
IAC should be cleaned and checked as this can cause poor idle and shut down. I'm not saying not to change O2 sensors, but unless everything else if OK, it probably won't help.
Posted on May 29, 2009
I had the exact same problem on my 04 GC. I put some Techron Concentrate Plus Fuel System Cleaner in from Wal-Mart and it seemed to fix the problems right away. Let me know.
Posted on Jun 01, 2009
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