Hello everyone! I need your help.
My '03 Explorer XLT won't start. When I turn the keyed ignition to start I get nothing but I do hear a solid sounding mechanical click followed by an intermittent faint high-pitched whine. It has remained this way for the past week every time I try to start it.
Here's what I've done to address the issue:
1. I opened the hood and disconnected my battery terminals. I wire cleaned the posts and the connectors, put battery felts down, the reconnected the terminals.
2. I got out my cheap multimeter and checked the voltage on my battery. It was 13.3-13.70 volts at static. When I turn the key to start my my battery dropped down to 7.0 volts. It goes back up to 13.7 volts once I go back to accessory, power on, and key locked.
3. I also tried to stay my Explorer in Neutral instead of park. Same results as 2 above.
4. Under the hood I opened the fuse box and located fuse #12 and relay #52. I test both and they work/function fine. While I had the box opened I went ahead and checked all the fuses. All good except fuse #17, a blown 20amp blade fuse which I replaced.
5. I even made a jumper wire and with relay #52 removed, I touched connecter 30 to 87. Same solid sounding mechanical click as if I were in the Explorer trying to key start it. I replaced the relay and closed the box.
6. I bought a new starter and installed it after removing the old one. Unfortunately I have the same results! Nothing but a mechanical click and an intermittent faint high-pitched whine..
7. Just to play it safe I finally got out a big ol' ratchet and 19mm socket for the front of the crank. I could not budge that thing to turn! Damn it!
8. Checked oil level real quick and I was within 1/2 a quart of being full.
9. What the heck! How does my Explorer drive perfectly fine like clockwork then all of a sudden it seizes up? I don't get it!
Are there any other things I can do to diagnose what it going on? I don't want to rebuild an engine with 205k miles on it. I'm hoping I'm just overlooking something.
Oh, BTW, I took the old starter down to my box auto parts store to have it tested on their machine. It passed with flying colors.
Anyway, I'm at my wits end for now. I could really use some help
Thanks, Rich.