8Mustang8

Hey i did a search and didn't find anything specific to this so i'm hoping this helps. I've got am 88 coupe with a t5 and just a couple weeks ago its started to pop out of first gear and i can't seem to figure out why. It only does it in first gear and it only does it when i'm accelerating from a stop. Any ideas of what this could be? it doesn't matter if i'm easing the clutch out or being more aggressive with it and it doesn't do it all the time but its does do its about 25% or so. Thanks for any help in advance

67mustang302

Either a bent fork, preventing it from fully engaging 1st so it slips out. Or worn teeth on the slider and/or dog gear assembly int he synchro. Or both. Sounds like it's time for a rebuild.

Make sure the shifter has the full range of motion too, it COULD be that something is jamming the shifter up and preventing you from totally grabbing the gear.

nightcrawler52

I agree, sounds like a synchro. My truck does this to me all the time too. I'm just too lazy to rebuild it.

8Mustang8

alright thanks for the input it grinds pretty bad going into second too if you don't let the rpms come down so its in need of a rebuild anyway, i threw it in my car used not knowing what it was like and its lookin like the thing must have been beatin pretty bad.

Soldier GT

No doubt about it man. It's the syncros. The exact same thing happend to my car. I went to the race track Nov 08 and screwed my tranny up. I drove it for about 6 mths grinding in third. One day I was driving it popped out of 3rd. I also had no fourth. Do not waste your time and try and just get the syncros fix. I would try and buy a rebuilt one (junkyarddog.com) that would be the best. Good luck dude..

67mustang302

If it's grinding AND popping out of gear, then most likely the synchros were going out, and someone kept shifting it with it grinding into gear, and it wore the taper off the dog/slider gears.