5 Speed Transmission Grinding

[deere842]

Hey everyone,

I have a 1986 Ford Ranger Stx, 5 speed, 2.9l v6. 191,000 Miles. When I first got the truck it was making a grinding sound in 3rd gear but it was quite. I changed the gear oil (80-90) and alot of miles down the road, in 1st, 2nd, 3rd it is grinding and "clunking" at slow speeds. What caused this? Is there anything I could do to make it last a little longer till I find another transmission? Does anybody have another transmisson Forsale?

Thanks!
Ken

 

[Heavyfire14]

your synchros are shot... i know a place in yuma, az thats real cheap... where are you located?

 

[Heavyfire14]

btw you should post a pic of your truck... i love the old stx rangers!

 

[Explorin94]

Sounds more like a failed bearing than a synchro. You have the dreaded FM146. Dump it and find a M5OD-R1.

 

[deere842]

I'm located in Laurel, Maryland. A little far from you, lol. I'm going to try to go junkyard hunting this weekend to find one. And will that transmission bolt right in with only little mods? I dont know how to post pics, So here is a link to my truck. http://s394.photobucket.com/albums/...056581547637_1637565779_2006946_5926579_n.jpg

Thanks,
Ken

 

[tx3nc]

Shouldn't it be filled with ATF and not gear oil?

 

[Hahnsb2]

No, the FM145 takes gear oil.

It sounds like bearings to me. The only one that'll bolt in without mods is another FM145, the M5OD needs different driveshafts and shift boots/floor plate.