Question about 2002 Jeep Grand Cherokee
Computer shows o2 sensor bank2 sensor1 or fuse bad. where is the fuse located
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Posted on Jan 02, 2017
Grand Cherokee oxygen sensor locations for 4.0 and 4.7 engines...
An O2 sensor is a galvanic battery that provides the PCM with a voltage signal (0-1 volt) inversely proportional to the amount of oxygen in the exhaust. In other words, if the oxygen content is low, the voltage output is high; if the oxygen content is high the output voltage is low. The PCM uses this information to adjust injector pulse-width to achieve the 14.7-to-1 air/fuel ratio necessary for proper engine operation and to control emissions.
The O2 sensor must have a source of oxygen from outside of the exhaust stream for comparison. Current O2 sensors receive their fresh oxygen (outside air) supply through the O2 sensor case housing.
Four wires (circuits) are used on each O2 sensor:
* 12-volt feed circuit for the sensor heating element
* Ground circuit for the heater element
* Low-noise sensor return circuit to the PCM
* Input circuit from the sensor back to the PCM to detect sensor operation
Hope helps (remember to rate and commene this)..
Posted on Feb 04, 2011
Testimonial: "that was very helpful thank you"
i would check with the dealer who changed the converter to check and see if the sensors were damaged while they replaced the converter or may be they have forgotten to hook it back up check before you throw away your good 02 sensr
Posted on Nov 12, 2008
the radiator fan relay is located behind and slightly lower than the r/f headlamp.best way to get to this is by removing right side of front fascia out enough to get behind it. this will give you acsess to the relay.i work at a jeep dealer and have done this many times.
Posted on Apr 18, 2009
SOURCE: 2001 jeep grand cherokee limited
no o2 couldnt do that it would have jump time you need to ****** your timing back to its time to get them ploblems fix then get a new timing belt dampner to keep it on track dont run anymore untill you get this fixed
Posted on Jan 16, 2010
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