Question about 2001 Jeep Grand Cherokee
2001 Cherokee 4.0 6cyl
P0161 and P0158 ...runs ok but ~18 mpg down from 20-22 for most of its 125,000 miles. Engine gets confused sometimes when just strated...chuggs, sputters...clears up and ok albeit with poor mileager and throws the codes again. How do you approach diagnosing this?
If you do not know what the codes are, it is O2 sensor. This means the computer is not reading the right information from the faulty sensor. (there is a set range the sensor is meant to show, if one goes over or under the computer shows check engine). The diagnostic is not too bad, give the car a tune up, plugs, wires etc. and replace the O2 sensor. This normally clears up any problems. Let me know if you need further clarification or help.
Posted on Sep 28, 2009
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Posted on Jan 02, 2017
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