Hey Jim, just to let you know...
Took the truck in today... here's what they found/did...
The burning smell from the front hubs was, nothing. They took them apart and all looked good. They suspect it was oil dripping on the front axle that burned off when they hubs were engaged. I dunno, but that is what they said... all good. (Drove it all the way home in 4High and worked like a charm, no smell.)
The constant downshifting was a little more tricky. They replaced the power valve and went up one size in jets (said the plugs were reading lean), and re-adjusted the throttle linkage. Also, new wires and a cap and rotor. Apparently, the #1 wire was dead. Like, dead. And the rest, well, they put them on a reader for me and they read bad. Lots of resistance. And they were nice enough to save and show me all the parts afterwards. THAT, is service.
Well, it cost me $400 but that's not bad. The Ford boys did a good job - it's 26 years old and runs like new today - and got it back to me the same day. But most of all, that $400 looked pretty good when - while I was waiting to pick it up - was comparing it to the payments on a new F250. NICE trucks, but $850/month for a new one, not even a full load. And that was for 60 months at zero percent.
Thanks for the info and assistance again Jim.
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<DIV>Sorry to bother you so much recently, but I'm having the worst run
<DIV>In a nutshell...</DIV>
<DIV>Tonite, just for the heck of it, I locked the front hubs on my 1980
Bronco for the drive home, and just a few blocks from my house shifted
it into 4 HIGH. The roads are covered in snow and I could feel the front
wheels turning. <BR><BR>When I got home, maybe 3 or 4 blocks max, I
could smell something, almost a burning smell, coming from the front of
the truck. It didn't smell like antifreeze or oil.<BR><BR>I'm gonna
guess it has something to do with the front hubs. <BR></DIV>
<DIV>Is this somehting you've heard of before?</DIV>