4th gear???

[astar4runner]

98 SR5:
what's the deal?
Shifting into 4th it just pops out!!
No other gear issues. When i do get it in, it stays but I think it is getting worse.

Please help...

 

[MilesRacker]

Your syncros are probably shot.

Not a good prognosis, you'll very likely need a rebuild. At least it's cheaper with a manual...

 

[pat161]

Before you go rebuilding your tranny check the bushing at the base of the shifter, this is a common issue with the manual tranny. You'll have to pull the whole shifter surround but you should see the piece I am talking about once you get in there. A sure symptom is having your truck pop out of gears easily.

 

[astar4runner]

syncros, bushing...

I've been doing my research and it seams as if the bushing is defiantly the cause of the 4th gear popping out. I also read that the syncros will be "eaten up and spit out" if the wrong fluid was used in a transmission oil change.

I just bought this truck and had jiffy lube due the diff's, transmission oil change and lube everything. Do you think they fuc*ed it up, wrong fluid which messed up the syncros??? I know, I should have done it myself...it was just convenient at the time. BigO tire was doing a balance and Sh*ty lube was across the street.

This all started when there was a high pitch whining when in 5th gear at about 70MPH. The only gear that does not sound "whining" is 4th??? And that's the one that pops out of gear.

What should I do?
Please help me out....

 

[pat161]

I would have to wonder what fluid Jiffy Lube put in if not a basic 75/90 gear lube, perhaps ATF I suppose. If I were in your shoes I would drain the tranny right away and put in Mobil 1 75/90 or Redline MT90 and see what happens. If you pull the plug and red ATF or thin motor oil pours out I would go right back to Jiffy Lube and hold them responsible for any damage.

 

[astar4runner]

plus...

I adjusted the push-rod on clutch. Would this cuase any problems. I turned it out so the clutch would engage 5-6" from floor.