I just bought a '98 TJ. Everything seems to fine, but I've noticed that it doesn't like to shift into 2nd gear when it's cold. And even when it's warmed up there are times when it grinds going into 2nd. All the other gears are fine. Any ideas?
even on stock height 1st to 2nd can be a pain, double clutching may help or just pulling the stick into gear faster. My 98 AX-15 can be a pain in the cold weather cuz of the 2 shifter boots so i just pull it into 2nd faster so there is less grinding. If anyone thinks that is bad please chime in so i know not to do it anymore
It's the plastic shift boot, when it gets cold it tends to become quite rigid. You can get a replacement leather shifter boot from an auto parts store and fit it onto the bracket which will solve the problem until then just let it slide into gear slowly, never grind it unless you like doing/paying for transmission rebuilds.
My 98 used to be horrific when it was cold outside. 2nd gear had to be played with gingerly to get into gear until the transmission warmed up. The synchro on 2nd tends to be the culprit. I switched to regular oil in the transmission this fall and so far I can get into 2nd with a lot less problem. That is not to say it doesn't still have to be shifted slowly. Just before there were times it just would not go into 2nd at all . This occurred before I lifted the suspension as well.
98 Sport Red 5spd
RC 2.5 lift/Daystar 1in BL/BrownDog 1 in MM/Ford 8.8 rear/Spartan lockers/RC stabilizer/JKS quicker discos/FabFour Hardcore Bumper/SB XRC8 winch
Cragar 365 series V5's/33x12.50 Goodyear Wrangler Duratracs/Grant Tire carrier bumper/Uniden pc68ltw with red 4 ft Wilson FGT,
My 05 TJL had the same problem, even when new. 2nd gear would grind, cold or hot. The problem finally went away completely after I switched to 10w30 Mobil One Synthetic. This works extremely well with the NSG-370 6-sp. transmission. In fact, it now shifts as smooth as warm butter and is much quieter. I've also done two fluid changes to look for excessively high particle levels; everything looked normal.
Some older Jeep transmission designs are now spec'd for 10w30 as well. If you have a 2nd gear grind problem, it's worth the effort to find out if you can use 10w30 as well. The difference for me was like night-and-day.
if you have a real problem shifting try to sync the engine and transmission speed i find that around 2300 rpm' s works for me, might be different for yours but the idea is the same. If your real good you dont need a clutch