Hi all. Thanks for reading. Sorry it's overloaded with questions, I do want to understand everything.
My 2007 Ford Taurus is having a no crank no start condition, only a click from the dash and starter relay.
I did do some maintenance by cleaning my MAF
sensor and my throttlebody (with the correct CRC cleaners). I tested it immediately afterward to see if it was idling stable and it seemed to be fine (the car started normally). The next day, all I got was a click from the starter.
I had Autozone test the starter and battery, both were good, though only tested once (but I don't think they're the problem anyway). My battery was charged up by them from 75% to full.
I've also tested the starter relay fuse in the power distribution box and it is good. Are there more fuses below the steering wheel that need to be checked?
I have directly jumped the starter solenoid with 12v while attached to car and it makes a whirring noise, as if only the electric motor started and the charge never seemed to cross from the solenoid to the starter motor and the car never really cranked. Can someone explain why jumping that starter solenoid and moving my key to start was not enough to crank the engine?
I also tried jumping pins 30 and 87 with a paperclip on the starter relay. As far as my multimeter showed, with alligator clips on battery ground and the other clip attached to the pink/green starter solenoid wire ring terminal, no charge arrived at the wire when I connected the two pins (with car in park and key to on). Does this mean the starter relay circuit has a bad connection? Or do I need to either A: make sure I connect a ground to the starter relay pin (in case my NSS
isn't sending the ground signal) or B: attach 12v to the NSS
wires that signal it's ok to turn on the car or C: something else (like bash my head into the steering wheel)?
How do I go about testing my park/neutral safety switch? Does anyone have a wiring diagram for my NSS
? I have tried jiggling my shifter around while turning key to start and no voltage went to the starter solenoid wire. I have tried starting in Park and Neutral, jiggling with both, but only receive a click
I do not have power going to my starter solenoid wire (the power wire to the starter is fine though, constant 11.8 or so).
The red/light blue starter wire, measured from the back of my ignition switch harness below the steering wheel says 11.8 or so when moving the key to start.
The starter solenoid wire is colored pink/green and it runs into a wiring harness or junction (not sure of the name). I don't get a reading from the back of wire 34 (where it seems the pink/green starter solenoid wire connects in the bottom right corner of the wiring harness box thing).
Also, is there a pink/green starter solenoid wire on the other end of this box or is it that same red/light blue wire that goes into the firewall and connects to my ignition switch harness? Or a few different colors that need testing which connect to the PCM
What are my options at this point? What diagnostic procedures have I missed (or forgot to say I did)? Can I make a bypass to start my car? I would especially like one that still requires my key to turn and not opening my hood to access a jumper wire.