I'm sure I missed it somewhere, but did you rebuild or refresh the T-case? What shape was the speedo drive gear in? Most (all really) of my speedo problems have been drive gear problems. Those suck cause you have to tear down the t-case to mess with it. But, sounds like you gotta get into it anyway with it being stuck in 4H.
The drive gear failed in my F250 10 years ago. I said screw it and never fooled with it again. You adapt to using the tach to judge your speed pretty quickly. The bad part to not having a functional speedo is no odometer either. Lord knows how many miles I've put on that IDI in the last decade, cause I don't.
Heath
The drive gear failed in my F250 10 years ago. I said screw it and never fooled with it again. You adapt to using the tach to judge your speed pretty quickly. The bad part to not having a functional speedo is no odometer either. Lord knows how many miles I've put on that IDI in the last decade, cause I don't.
Heath