3rd gear popout - 89 sentra

Puddin · Feb 13th, 2006, 10:02 PM

I have a 89 nissan sentra 2-door. Great car. Had it since it was new.
I have almost 300K on it. No, not the original engine. Had the original engine rebuilt, lost a cylinder and put a 90 engine in it. Still runs strong. Just recently it started popping out of third gear (4 speed tranny). Seems to get progressively worse - popping out of 3rd. Anyone have any ideas? Is there any bushings that I might replace, or would it be a internal issue? Before I dig into it deep just thought I would ask. If it is merely a internal issue, I'm sure I can find another transmission at a junk yard and swap it out. Which brings me to another question. Is it possible to swap in a 5 speed (bolt on) or just stick with the original 4 speed to keep it simple.

Any replies appreciated.

Thanks,

Ken

WATSON1 · Feb 13th, 2006, 10:12 PM

Check your fluid, might be low. That's about all I know to do, since I'm not a tranny expert.

wildmanee · Feb 13th, 2006, 10:48 PM

If your car's a GA16DE sentra, then I know for sure that yes, a 5 speed GA16DE tranny will work.

Puddin · Feb 13th, 2006, 11:03 PM

Quote:

Originally Posted by wildmanee

If your car's a GA16DE sentra, then I know for sure that yes, a 5 speed GA16DE tranny will work.

sorry - It's a 16i series.

wildmanee · Feb 13th, 2006, 11:09 PM

In that case I think a 5 speed GA16DE tranny will work, with some minor modifications to a mount. I saw a post on here a while back about a guy who bought a GA16DE tranny and mated it to his GA16i with no problem, just had to do some cutting of a mount... try searching for it?

Puddin · Feb 14th, 2006, 12:13 AM

After doing some more searching it seems like a 5speed out of a GA16DE will work fine assuming the speedo matches up right (mech vs electronic). Now the trick is, what does that tranny come out of?

Thanks,

SuperSentra4203 · Feb 14th, 2006, 12:19 AM

You're in the wrong forum, head over to the B12 section. Yes, the GA16DE 5-speed will fit the GA16i engine with no problems.

1BADSR20...1DAY · Feb 15th, 2006, 07:38 PM

YOUR 3RD GEAR IS "POPPING" OUT OF GEAR BECAUSE THE CLUTCHING TEETH ON THAT GEAR ARE WORN. MORE THAN LIKELY YOU CRUISE AROUND W/ YOUR HAND ON THE SHIFTER AND IT WORE THE TEETH OUT. DON'T FEEL BAD I HAD TO LEARN THIS THE HARD WAY TOO! THE ONLY WAY TO FIX THIS PROBLEM IS EITHER HOLD THE SHIFTER IN THIRD WHILE YOU NEED IT THERE, REPLACE THIRD GEAR ( THE GEAR COMES W/ CLUTCHING TEETH ON IT) OR REPLACE THE TRANSAXEL.

SuperSentra4203 · Feb 15th, 2006, 09:20 PM

hehehe, im not sure thats what he wanted to hear....expensive and difficult repair.

WATSON1 · Feb 15th, 2006, 09:25 PM

Quote:

Originally Posted by 1BADSR20...1DAY

MORE THAN LIKELY YOU CRUISE AROUND W/ YOUR HAND ON THE SHIFTER AND IT WORE THE TEETH OUT.

Damn, I just learned somthing new myself, glad I read this before I end up with the same problem. Why the caps lock??

SuperSentra4203 · Feb 15th, 2006, 10:34 PM

Quote:

Originally Posted by WATSON1

Damn, I just learned somthing new myself, glad I read this before I end up with the same problem. Why the caps lock??

Well it's fine to rest your hand on it, just make sure you just dont put pressure on it.

WATSON1 · Feb 15th, 2006, 10:41 PM

Well, I normally pull back on the shift knob just enough so it doen't come out of gear, just enough so that I can hear the grinding. I do that about 4 hours a day running about 75 or so. I also like to keep the clutch pressed about half way while doing it...

J/K-I do occasionally rest my hand on the shift knob, but I never put any pressure on it in any direction, so I guess I haven't hurt anything

SuperSentra4203 · Feb 15th, 2006, 11:57 PM

Yeah, i doubt any damage was done. If just resting your hand on the knob is bad, then my T5 in my T/A would have wrecked itself a long time ago as they are notoriously weak transmissions.