I decided to change fender flares on my old Jeep because one of them was crumpled a bit. So I had three fender flares in storage, and needed to order a fourth, which I did. Then I headed out to storage and about halfway there, noticed that my speedometer wasn't working. Then about halfway home, my check engine light came on. Siiiigh!
Okay, so I got home, plugged in my code scanner, and it was a 501 -- "Speed sensor not working". Duh. So the next thing I did was notice that it was friggin' *cold* outside, so it was time to move the Jeep into the garage where it was significantly warmer. Well, easier said than done, so I spent about an hour cleaning out the garage to the point where there was enough room for a Jeep (eep!).
So anyhow, got the Jeep into the garage, rolled under the Jeep on my creeper, popped the speed sensor off, and... err... nothing wrong? So I revisited the installation directions and realized that when I'd replaced the O-ring on the speed sensor to deal with a transmission fluid leak last week, I'd installed it with the wrong rotation and it wasn't engaging the pinion in the transfer case tail. Sigh!
So now it's installed correctly. And how I managed to go a whole week without noticing that I didn't have a speedometer *still* confuses me. I guess I'm just so familiar with the sound of the engine in that old thing that I never bother actually looking at the speedometer!
-- Badtux the Wrenchin' Penguin