Mitsubishi Repair Problems? Ask a Mechanic for Answers ASAP
Hi,Can you clarify if this is a manual or automatic gear box that is popping out of gear?
Thanks.When you say it pops out of gear, is it pretty much like you are switched to Neutral with no reaction at all from the gas pedal (just free revving)?
When this happens, does moving the shifter out and back into Drive resolve the issue, does the key have to be cycled off to resolve the issue, or does it not resolve without time elapsing etc?
Semi auto.... an automatic with tip tronic style option, or is it a twin clutch (SST) manual transmission with automated shifting?
Thanks, you'd know if it was an SST most likely. They usually have a well marked SST switch on the console to change shift modes.I know this sounds pretty basic, but have we tried adjusting the shift linkage to make sure it is not just electrically going to neutral? The transmission end of the shift cable has a large plastic switch that tells the computer what gear is selected, and if it is slightly out of adjustment this behavior will occur.
Well you would need to get to the transmission cable under the transmission. On it you would find a 12mm nut on the cable end holding it to a slotted metal bracket sticking out of the center of the transmission range switch. You would loosen the 12mm nut but do not remove it, then as the cable rests in its new position, tighten down the nut. That is the most basic adjustment.
If it persists you can do further adjustments by manually selecting neutral and placing the shifter in neutral and performing the same operation (it is a tighter range of travel there).
If it still persists, then one step further you can loosen the two bolts holding the range switch and it has some fine adjustment on it too where it can be rotated a few degrees in either direction.If doing all of this still does not clear up the condition... then we are most likely looking at something internal to the transmission (be it mechanical/hydraulic or something electrical like a solenoid). This is pretty unlikely though since you changed out the box already and if I understood correctly the behavior is identical?
You're welcome.Give that a go and hopefully that should resolve things. If it does not, then we would have to consider that perhaps the replacement box is no good, or something happened during install to cause issues (fluid over/under filled, something in the wiring pinched, etc).
The position switch is certainly possible, though generally if there is any difficulty with it in the capacity you describe then adjusting it would correct the issue.
I would be hesitant to replace it if an adjustment did not correct it in any capacity. With your symptoms if it were the position switch we would have expected at the least that the problem became less or more frequent by adjusting the cable. If there was no change at all, the odds of replacing the switch correcting things are very slim. The only way you could test this would be to put the vehicle on a diagnostic computer that can do data logging and monitor the gear position indication while driving, and when it drops it would either show the gear selection stay the same (not related to the switch) or the selection drops (would be related to the switch).