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NC Manual transmission

Posted: Thu Apr 03, 2014 1:11 pm
by NaregM677
I'm having some trouble with my gearbox. When the car is cold, I have trouble putting the car into 2nd and 3rd gear. I have to drive a few minutes before I can drive the car how it is meant to be driven (more than you might think). Does anybody have a solution to this? I read on a different forum that changing the tranny oil to a particular Ford Motorcraft tranny oil would help the issue, so I did. It seemed to help for a little while, but now it seems back to its usual ways. The tranny seems to get better once I rev the engine high once, but I obviously don't do that until the engine warms up. When I was changing the oil, I found a lot of metal shavings attached to the magnetic plug, and its concerning. Any thoughts?

Re: NC Manual transmission

Posted: Thu Apr 03, 2014 3:49 pm
by Va MX5
Nareg,

I'm sure you will get many opinions on this subject. 1st, I would assume you are not a gear grinder, so the metal shavings should not be a problem unless they continue, or get worse, at your 2nd fulid change. 2nd, if you have a 6 speed, I recommend you invest in one of Brian's Beatrush Shifter Collars. It will really smooth & tighten things up with your shifter. 3rd, and most important, change the tranny fluid to Red Line MTL, it should make a big differance for you. Let's call the MTL replacement, fluid change #1, so if you observe significant metal shavings at fluid change #2, then you may have a problem, but if so it will likely show up before you ever get to the 2nd fluid change. I would change the fluid every 12 months. Always drain the fluid while it is hot. My car sees A LOT OF TRACK USE, but it shifts flawlessly street or track, current milage is about 15k on the car, most of it on the track. The 1st time I changed the fluid was after owning the car for a month, I did it to solve the same problem you are having, never been a problem since. I hope this helps and you are better able to enjoy your great little car!

Regards, Pat

Re: NC Manual transmission

Posted: Sun Feb 07, 2016 10:50 pm
by MickeyD199
I HAVE THE SAME PROBLEM WITH MY 6 SPEED MANUAL EXCEPT MINE IS VERY HARD TO SHIFT INTO 1ST AND 2ND ON COLD START UP AND AFTER WARM UP INTO 2ND GEAR.CHANGED TRANSMISSION FLUID NO HELP.MY CAR HAS 29 THOUSAND MILES ON IT.AFTER THE ENGINE IS HOT SOMETIMES IT SHIFTS WELL BUT SOMETIMES IT HARD TO SHIFT INTO 2ND GEAR. I OWN A 2008 GRAND TOURING MX5

Re: NC Manual transmission

Posted: Mon Feb 08, 2016 7:31 am
by Brian
Miata.net threads with potential answers on this at THIS LINK.