Question about 2004 Jeep Grand Cherokee
Bad news buddy . Busy with one myself . The engine needs to come out , or at least a foot or so forward . You have to strip the whole nose of the vehicle . Remove the injector , cut the seat , install new washer in the head, and assemble .
Posted on Oct 23, 2012
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Posted on Jan 02, 2017
This code is a catalyst efficiency code. The catalytic converter is most likely the problem, but it could still be caused by a defective oxygen sensor. The easiest way I know to check for this code is with a scan tool that is capable of reading live data stream. You need to look at the upstream and downstream oxygen sensors, and see if they are mirroring each other. In other words, if the upstream (the one before the catalytic converter) is reading .700, and the downstream ( the one behind the catalytic converter) is reading .700, or anywhere near that, then you have a problem. The numbers are just examples. The upstream should constantly swith from high to low voltage. If the downstream is identical, or even remotely close to having the same reading as the upstream, then you most likely have a defective catalytic converter. This does correspond to what happened a couple of weeks back. A misfire will take out a catalytic converter if not repaired quickly. Also, if you had a converter that was marginal, and was close to failure, then that misfire may have been just what it needed to fail.
Posted on Nov 10, 2008
I thinking tha you are fix the CHMSL (Central High Mounted Stop Light); review the Service Manual, the section ZJ-Secc-8L-Lamps (page 7, fig. 11).
I hope help you with this, good luck (remember rated this help).
Posted on Sep 16, 2009
Most larger parts stores carry either chilton or haynes manuals. They are far from perfect and their wiring diagrams are pretty much junk, but overall the do have enough info for most basic and some not so basic repairs. Chilton also offers a download for pay which is better but unless you are doing major complex repair work, likely you won't need it.
Posted on Nov 12, 2009
pic REMOVAL - 4.7L
The Camshaft Position Sensor (CMP) on the 4.7L V–8 engine is bolted to the front/top of the right cylinder head (CMP Location—4.7L Engine).
It is easier to remove/install sensor from under vehicle.
Raise and support vehicle.
Disconnect electrical connector at CMP sensor (CMP Location—4.7L Engine).
Remove sensor mounting bolt (CMP Location—4.7L Engine).
Carefully twist sensor from cylinder head.
Check condition of sensor o-ring.
See picture for sensor location.
Posted on Jul 21, 2010
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