There could be several reasons why the 4th gear in your 1992 Mercedes 300 SE may not engage. The reasons can include a gummed up solenoid, a wiring issue, or a relay switch problem.
I'd say check your transmission fluid and if there's enough fluid in there your tranny could just be going out. It might be a problem with your sync rows or the gears are just gone.
sounds like transmission problem it could be the lever but likely that the teeth on the gear for forward is strip and wont engage...take it to mechanic or take the crankcase transmission case off and play with the gear back and forth to see what its supposed to engage and look at the gear replace if needed...trust me its worth it to do it youself and its pretty easy..just takes some time prolly an 1.5hour!!
If it is a 2007-2010 there is a spring retainer on the shifter that breaks.
You need to lift the collar on the gear stick to engage reverse gear
I know that my 1995 XLT has a brake interlock switch, that doesn"t allow my automatic transmission to shift out of park into gear unless the brake pedal is depressed - I don't know if that is what your problem is.
you either got air in the hydrolic clutch or the hydrolic clyinder is out .check your fluid level.
My hyundai wont go in gear the stick feels loose and wobbley whats wron ?
Starters are made specifically for certain engine and transmission combinations. The snout of the starter must be the correct length for the worm gear to engage the ring gear. If you have the wrong starter, the worm gear will not engage properly. If the ring gear is damaged, the starter might be operating properly, but have no teeth to engage. If the solenoid is not working, the starter motor will spin, but the worm gear will not be pushed forward to engage the ring gear. Remove the starter, and visually check the ring gear for missing teeth. If the ring gear appears to be intact, take the starter back to the place where it was purchased and have it tested. If the starter tests good, check the solenoid wiring on the vehicle to insure that the solenoid is being energized. If all of these steps fail to identify the problem, return the starter and get a different starter out of stock and compare them. You might have a mislabeled starter.
No, you push the clutch all the way in to disengage the gear you are using from the drive train, and then you engage the next gear you want to use and re-engage that gear to the drive train.
If it will go into gear when the engine is off but not when the engine is running, the clutch is not disengaging. It could be the clutch, possibly warped or put in wrong, or it could be the hydraulic clutch mechanism.
your geers in your tranny are waring down and will cause the transmission to slip or not go into gear