Manual transmissions jumping out of gear can be caused by several things: The engine mounts have a fault allowing the engine/transmission movement causes the gear lever to hit something knocking the vehicle out of gear. The detent/s in the gear box shift rail/s have broken spring/s so the gear is not held in gear. Toyota offers a manual transmission in their mid-size Tacoma, but you won't find it in the Tundra. Nissan's mid-size Frontier can be paired with a manual. In fact, the Frontier S and SV 4×2 models equipped with an I4 engine come standard with a 5-speed manual transmission. A 6-speed manual is available for Frontier models with a V6. PARTS TO FIX THE RATTLING SOUND:National Throwout Bearing: amzn.to/2Lp0pL3Timken Throwout Bearing: amzn.to/33Mi45KPivot Ball: amzn.to Here is a more detailed list of what can be the causes when a transmission is slipping: 1. Low Transmission Fluid. Low transmission fluid is probably the most common cause of why your transmission is slipping and probably also the easiest to fix. When the fluid level drops, the pressure required to engage the gears properly is reduced. Hello gang, My 2013 JKR 6 speed has developed a strange knocking sound over the last 5,000 miles and I am wondering if you guys have any idea what the problem could be. My JK is currently at the dealer for an unrelated issue but spoke to the service manager about the knocking noise coming from the clutch/trans area. It also stays in gear as long as it can when braking. This gives you the benefit of engine braking while gaining the lower wear and lower fuel consumption of being in neutral. Interestingly, the manual specifically states to not move the car while the transmission is in neutral, as it can damage the all-wheel drive system. Discussion Starter · #9 · Apr 25, 2005. When the clutch is disengaged (pedal down)the noise is practically non existent whether in gear or neutral. When the clutch is engaged (pedal up)with the trans in neutral the noise is noticeable, but not very loud. However, when you kill the engine with the clutch disengaged the noise is noticeable, but Also a weird clunking/churning sound on takeoff when engaging the clutch. It growls in all gears but is worst in 4th. Same grrring sound when idling in neutral too. It's been to the dealer 3X now. On the 3rd visit, they dropped the trans and had a look inside. Manual transmissions will emit sounds that can be described as being slightly more mechanical, louder and abrupt sounding. A clunking sounds when you shift gears almost always lies within a transmission, while constant velocity joins or the differential may be the source if the clunking is coming from the underside of your car. Hello - a knocking noise while rolling in neutral is likely a damaged Constant Velocity joint or a wheel bearing with a "hard spot" or damaged position in the bearing. Acceleration puts additional load on the CV joints, so your "mostly 2nd gear" observation could be a very important clue as well. If you hear grinding sounds when shifting from neutral to any gear, you may be dealing with bound, bent, or broken linkage components. The grinding may also be caused by damaged or worn synchronizer blocking rings, shift forks, or bearings. If your transmission makes a humming noise, you may be driving with low transmission fluid, or else your Rattle from the rear of the car at low RPM. Noise from drive train with en