thanks bob for the trouble shootin guide. gave me the specifications and tolerances i needed to test everything.
checked everything visually, and for loose parts. ok
back probed the new sensor and found 4.3v constant, key on, on the signal wire. should be 1v.
for shiggles i tossed on the stock sensor and found .13v constant on the signal wire. well at least i know the wiring is workin ok.
back to autozone with the 2week old sensor. no reciept, doh!
guy at autozone: "how do you know the sensor is bad?"
me: "i tested it"
guy at autozone: "no reciept, ill hafta give you in store credit cause i dont have another sensor, and the warehouse is out of stock as well"
store manager: "probly got recalled"
guy at autozone: "who did the diagnostics?"
guy at autozone: *smart* "you have a diagnostic computer?!?"
me: "no, i have a voltmeter, and a cup of T pins, and i know how to use them."
guy at autozone: *bewildered* "year, make and model....."
so no help there except $26 i hafta find a way to spend. got to ford, $73!!!!! i know you get what you pay for, but three times the cost? ouch.
again for shiggles i take my new ford part to advance auto. i was there 2weeks ago and they couldnt get me the part. cross referenced every number we could find on the stocker and the wells part from autozone, nuthin. cross the ford part number and viola! we got a SPO part for $33.
ordered that, and took the unopened part back to the ford store.
i know the guys at advance and if this one craps out in two weeks they wont leave me high and dry like autozone and ford would.
so, tomorrow morning ill go get my new DPFE from advance auto and have them reset my MIL again. wish me good luck!
for DPFE reference
part number: SU2308
part number: 77911017
part number: 4U7Z-9J460-AA
DPFE PFE EGR p1400 p0401