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-   -   1st gear problem (http://www.jeepforum.com/forum/f19/1st-gear-problem-1962642/)

d_diesel27 01-05-2014 04:57 PM

1st gear problem
 
Just had my clutch replaced about a month ago, now only sometimes when i stop, its tough to get into first gear, no other gears i have a problem with. Its only hard to get into first gear say every 1 out of 6 times. I have to push clutch in, if it gets stuck i throw the stick in neutral release clutch and just push again and it goes right in. Could this be a sign of my tranny going?

mmerlinn 01-05-2014 11:19 PM

Could be bad shift fork, bad detent, bad synchro ring, or possibly something else related to 1st gear since that is the ONLY gear giving you problems.

holysirsalad 01-06-2014 05:25 AM

^^ yup

Most likely is a worn synchro/hub.

When was the fluid last changed and what did you changr it with?

d_diesel27 01-06-2014 05:37 AM

Was changed about 1-2 months ago. Cant remember what it was changed with because i changed it twice in two days. All i know is that it was the right kind says the jeep mechanic who fixed my clutch. Thanks for the help, i believe its the synchro now too. Any idea what happens next? Does it keep getting worse or...

holysirsalad 01-06-2014 10:22 AM

What is "The Right Kind"??? There is a lot of bad info out there as to what fluid to run. Not sure if you have an AX-15 (where it really matters) or an NV-3550 (not familiar with the specs). With the AX-15 there was a bad publication by Chrysler saying to run API GL-5 hypoid gear oil which kills synchronizers. Then as soon as the warranty period dropped Chrysler stopped carrying the correct fluid and substituted engine oil since they didn't give two ****s anymore. Since you can't get API GL-3 or API GL-4 oil anymore it's likely you have the wrong stuff in there. I don't know what the weather's like where you are but ambient temperature makes a big difference in shifting with worn synchros.

I'd suggest trying an oil that is actually designed for synchronized manual transmissions like Pennzoil Synchromesh or Redline MT-90. At the least you should check for metal flakes or even chunks of the synchro in the oil.

JeeperDon 01-06-2014 11:07 AM

Trans was fine, then you did the clutch, now trans is not fine. You problem is most likely the clutch is not fully disengaging. Make sure the clutch fluid line is bled properly/completely.

Evildriver-3 01-08-2014 12:48 PM

You're problem is most likely at the slave and it needs to be bled.

Don't jump to think you have a issue in the trans when you're problem is only at off stop and no where else, which leads to engagement issues from lack of total disengagement of the clutch.

mmerlinn 01-09-2014 01:02 PM

Though I agree that there is a extremely slim chance it could have something to do with the clutch or external hydraulics, it is EXTREMELY unlikely to be the case since you are having problems in ONLY ONE gear. If the problem was external, you should have problems in EVERY gear. Just to be sure, check the externals, but don't hold your breath.

JeeperDon 01-09-2014 06:24 PM

If in neutral with clutch engaged, then push the clutch pedal, then wait maybe 5 seconds for the clutch disc to stop, does it go into reverse easily? If not, it's looking more like a lazy clutch disengagement.

Evildriver-3 01-09-2014 10:14 PM

When the vehicle is moving and everything is moving there is never a need to have any use of the clutch to up shift or downshift. If syncs were bad it would most likely cause more issues then just selecting 1st.
The slave has this issue quite often in jeeps, especially after having changed a clutch, why I don't know but I have seen it twice they had to be bled


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