Question about 1996 Jeep Cherokee Country

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1997 Jeep Cherokee was an excellent runner until 2 weeks ago. Now it suddenly runs hot and dies. While driving intermittently sputters and miss fires. Check Engine light on. Replaced a few things. Should I replace the 2 oxygen sensors? Should I clean the throttle body? Any help would be appreciated. Thanks :)

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Do not replace oxygen sensors without pulling codes or faults from Engine Control Module.

You probably have an overheated engine, Check codes and if codes are P0300-P03006 you have a misfire problem, try to resolve the misfire problem first, check for compression on misfiring cylinder, compare to all other cylinders, If compression is fine then move to ignition system by checking spark KV if possible, Check spark plug wires, dist cap, rotor and plugs for damage.
Check for signs of overheating like low coolant level, check oil for contamination(coolant-oil).
Good luck guy, there are so many things to check, i just hope this ones will help you some.

Rob

Posted on Jul 24, 2009

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I forgot to mention, change the thermostat also....$5.00....don't forget to change it!

Posted on Jul 24, 2009

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Well the water pump sounds bad....it is a cheap fix at $34.00 and will fix the overheating problem. The O2 sensors start at $63.00...but if you have a "check engine light" on, get it read at the parts store for free and see if the code is for the O2 sensor.

Posted on Jul 24, 2009

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