Power Steering Switch failing O2 sensors!
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Joined: Jun 2006
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Power Steering Switch failing O2 sensors!
My 2000 Durango SLT with a 4.7L engine has failing (front) O2 sensor. 91,000 Miles. Replaced OEM o2 front sensor.
Repeated code being picked up: PO171 Fuel System Lean - Engine Light On.
The dealership did perform diagnostic checks on all possible problems - associated with the above code, but found all items to be OK.
Their conclusion is that the power steering switch is leaking fluid, pushing oil into the harness. Dealership states that the o2 sensors and the power steering switch wires are running in the same harness. The faulty switch and their related wires are interfering with the signal picked up from the o2 sensors - and providing faulty information back to the computer.
Their recommendation was to replace the faulty power steering switch, both o2 sensors, and take apart the wiring harness and create another individual harness just for the o2 sensors. No more cross 'talking' between sensors. Stated the o2 sensor is good just reading low voltage.
After my dealership noted the above, I researched the Internet and came across the following identical problem but with a different solution. Please see / read the top of the second page: ttp://www.wellsmfgcorp.com/counterpoints/counterp_v9_i1_2005_2.pdf
The dealership requested a hefty sum to correct my problem. I have paid for their diagnostic service and will repair the Durango myself, but after reading the Well's article, I question which solution is correct.
Dealership did contact their Tech Line, and either created a case number, or from previous similar situations - Case #8314819.
Today, I received my ordered power steering switch and replaced it. Prior to replacing it, I sprayed Brake Cleaner into the power steering switch connector and left it uncoupled for a couple of days. The item did leak fluid through the electrical coupler.
Put the new power steering switch in and put it on a scanner to have the 'check engine' light to go off. During this check, the o2 sensor was reading zero. I went back to the dealer, who accepted that the sensor was not reading, and again stated that the wires have to be cut and spliced with new wires, plus noted harness back to computer.
Has anyone else had this problem?
Does anyone have electrical diagrams for this vehicle to identify what the o2 sensors couple to - in order to splice new wires?
I look forward to all responses!
Repeated code being picked up: PO171 Fuel System Lean - Engine Light On.
The dealership did perform diagnostic checks on all possible problems - associated with the above code, but found all items to be OK.
Their conclusion is that the power steering switch is leaking fluid, pushing oil into the harness. Dealership states that the o2 sensors and the power steering switch wires are running in the same harness. The faulty switch and their related wires are interfering with the signal picked up from the o2 sensors - and providing faulty information back to the computer.
Their recommendation was to replace the faulty power steering switch, both o2 sensors, and take apart the wiring harness and create another individual harness just for the o2 sensors. No more cross 'talking' between sensors. Stated the o2 sensor is good just reading low voltage.
After my dealership noted the above, I researched the Internet and came across the following identical problem but with a different solution. Please see / read the top of the second page: ttp://www.wellsmfgcorp.com/counterpoints/counterp_v9_i1_2005_2.pdf
The dealership requested a hefty sum to correct my problem. I have paid for their diagnostic service and will repair the Durango myself, but after reading the Well's article, I question which solution is correct.
Dealership did contact their Tech Line, and either created a case number, or from previous similar situations - Case #8314819.
Today, I received my ordered power steering switch and replaced it. Prior to replacing it, I sprayed Brake Cleaner into the power steering switch connector and left it uncoupled for a couple of days. The item did leak fluid through the electrical coupler.
Put the new power steering switch in and put it on a scanner to have the 'check engine' light to go off. During this check, the o2 sensor was reading zero. I went back to the dealer, who accepted that the sensor was not reading, and again stated that the wires have to be cut and spliced with new wires, plus noted harness back to computer.
Has anyone else had this problem?
Does anyone have electrical diagrams for this vehicle to identify what the o2 sensors couple to - in order to splice new wires?
I look forward to all responses!