HELP my YJ won't shift into gear while on, but will when turned off.
YJ AX15 tranny worked before but it would grind while shifting into 2nd and 3rd. Dropped the tranny then had a shop rebuild it. The shop has excellent references and my buddies that use them have never gotten a tranny back that wasn't right. The shop did the rebuild as well as the put in a new slave cylinder. The shop said that the synchros were bad, and that at some point water had gotten into it.
Put the tranny back in and it will shift into all gears while off, with no problems. Start it up and it will not shift into any gear. Started it while in gear and it will move forward, or backward when in reverse.
sounds like the same thing to me shadow, but could it also be the syncronizer gear is possibly failing?
eh, Not likely syncros in rev and 1st both go out at the same time, plus a supposedly reputable shop shouldn't screw up something as simple as a syncro imho with ax-15s. Sounds to me like the throwout isn't engaging the clutch. Could be installed wrong, pilot bearing not in, new slave cyl not having the air bled out or installed wrong... all clutch related
Clutch pedal has excellent pressure throughout entire length of throw. The synchros were just replaced. We bled the air out of the new slave. We're thinking the clutch as well but don't want to have to buy a clutch and drop the tranny again until we are sure.
I had a similar problem after my ax15 rebuild . I did all work to save money. Somehow while putting it back together it didn't seat properly or shifted during rebuild and had to be taken apart again. Changed out the reverse synch again due to the same grinding as a safety measure and reinstalled. The shop owner had the same problem happen to his a few days prior.
While in reverse with clutch petal pressed it would try to roll forward weakly.
If the system is bled correctly then I'd also say your clutch disc was installed backwards, I had a shop install one incorrectly in my car years ago, let's just say the shifting wasn't easy especially in the higher RPMs, ended up destroying the pressure plate and sending one of the rivets through the side of my bellhousing into the gear box itself. This was before my mechanicing days, I do my own work now lol
Right, since mine was an internal slave then the throw out is connected to the slave. In an external it wouldn't be. Tomorrow night we are going to go ahead and replace the clutch, clutch plate, and flywheel. We were hoping someone had the same problem and a solution that didn't require dropping the tranny again. Doesn't sound like I can avoid it.
Update: We took the tranny back out and found the pilot shaft (or input shaft) bearing had failed. The outer race is stuck in flywheel. Does anyone know if the throw out bearing/slave cylinder requires the pin/dowel? We bought a replacement clutch/clutch plate/throw out bearing and it came with a new pin, however, the existing throw out bearing (with was replaced last week) did not have the pin. If required could it have caused the bearing to fail?
Also, we didn't install the clutch because we couldn't get the bolts off nor could we torque them back on if we did. Once I convince the transmission shop that they caused this by leaving our that pin, I'm going to have them install the clutch as well.
Wait... so this reputable shop installed the clutch and transmission? You're telling me they didn't test drive it or have you verify it's in operation before you signed off on it. You got A LOT of trust in shops, I'll never have something done without verifying accuracy.
No a different shop replaced the clutch 4 months ago. I just finished dropping the tranny again and replaced the clutch, clutch plate, and the pilot bearing that failed. Started her up and she shifts better than ever.