Where to add manual transmission fluid 1990 Toyota Corolla Sedan?

desertcities

My 1990 Toyota Corolla has 130,000 miles and still running strong. However, while driving in 4th gear, the gear shift on the floor pops right out of 4th gear.































Someone suggested I check to see if my manual transmission has fluid, or grease, in it.































Where to check if the manual transmission fluid, or grease, is low? And how to I add any fluid or grease to it?































I cannot find the information in my manual.































Thank you!















Please note this is "not" an automatic transmission. It's a manual 5 speed. Uses a clutch. Driving sometimes it pops out of 4th gear only.

cpnpicard1

The service manual says to add fluid through the dipstick channel. If you open the hood and stand in front of the car you should be able to see the dipstick handle for the automatic transmission on the left side (passenger side) of the battery.















































There is another place where automatic transmission fluid is needed. It wouldn't surprise me if many do-it-yourself Corolla owners never think to change the fluid in the differential case. But if they have their inner CV joints changed, this fluid is changed for them. The maintenance schedules in the service manual don't show how often the fluid should be changed. I suspect its good for tens of thousands of miles.































Under the front of the car you will see that the "axles" or CV joints go from the wheel towa

John W

To check manual transmission oil you need to remove the filler plug. The plug is a 24mm bolt on the side of the gearbox. On the lower side of the gearbox there is a 24mm plug which is the DRAIN.















Remove the filler bolt, and oil should run out of the gearbox, or at least be up to the hole. So you might need to stick your finger in the hole, to inspect it. To fill you might need a small pump or syringe to squirt some gear oil in.















From the problems you have, low oil will not cause the gear to 'pop out'.















You have a transmission movement problem, either internal, or external movement.































External issues can be linkage problems or mounting problems. Linkage problems are easy to diagnose and can typically be duplicated. Worn engine/transmission mounts can allow the assembly to move and cause strain on the linkages which can cause the pop-out. This is a little more difficult to find.































Internal issues are caused by a few items, but the most common one is worn bearings. The helical-cut gears used in production cars put great strain on the bearings. Helical gears are used because they run much more quietly than straight-cut gears. (However, helical gears are much more expensive to produce, so we know cost isn't the factor here.) The two shafts that are engaged with helical-cut gears are always trying to force each other apart along the axis of the shafts. This force is transferred to the bearings and then onto the case. Once the bearings begin to wear, the shafts develop a small amount of play and can then move along their axes. Since the engagement forks and their respective hubs also move in a motion along the axis of the shafts, any movement is going to effect gear engagement. The shift hubs are normally free to move along the shafts and once pushed or pulled into an engagement position they are held in place by only small "detent" springs. These springs need to apply only a minimal force to hold the hubs in place, but if the shaft was to move along its axis, such as in a "power on, power off" application, the detent springs have no chance of holding the hubs in place.

poletop1

there is a threaded plug on the side of the transmission case.The oil should be up to that hole,or close to it.You should be able to stick the tip of your finger in and touch the oil. If not, it's low. If the fluid is red,your tranny takes ATF. If it's black and stinks, it takes gear oil.I'm not sure on a 90 toyota,but,most newer cars take ATF in standard trannies,for better cold weather shifting.Check your owners manual, or with a dealer ship mechanic.

gordon m

theres two plugs but if its a manual and takes 90 weight gear oil t shouldest be the oil all that low oil will to a trans is make it howl real loud but not pop it out of 4th