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Old August 25th, 2011, 07:59 PM   #1
MiNi Beast
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Default durango 4.7 4x4 engine text tip

durango came into the shop today with a lean code, ok right, well it was throwing a lean code and blowing black smoke, there was no o2 activity because it was actually running rich due the power steering pressure switch leaked fluid through the harness to the pcm which caused the connection to be whatever so no o2 sensors which plug harness had traces of power steering fluid as well. So replaced power steering pressure switch, cleaned up harness of fluid, clean up pcm and used electrical contact grease, replaced carbon plugged o2 censors and changed oil. Runs so much better, be back after 1000 miles to change oil again, (built up carbon).

So tip is if pcm has a power steering fluid leak, check the pressure switch. :D
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Old September 2nd, 2011, 02:56 PM   #2
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this is real common. we get these on a daily bassis in the shop. Not just durango. the dakota,ram, and jeep with 3.7,3.9,4.7,5.7.
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Old September 2nd, 2011, 02:58 PM   #3
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