Auto trans grind when shifting from 1st to 2nd and downshifting from 2nd to 1st
My transmission grind like its not going all the way into gear from first to second accelerating and jolts when slowing down when it downshifts from second to first
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the synchros are not DIY, when they start to go it will grind when the RPMs are higher like getting on a highway, you can try double clutching and see if that helps.
when in auto shift mode you place gear selector in auto shift and as you drive you are in control of upshifting and down shifting, when you want to shift up you slide shifter to the right and to down shift you slide shifter to the left, but also know that the vehicle will up shift on its own if rps are to high and will not downshift all the way back to first, and try not to take off in higher gears that nwill burn the transmission
What is happening to you is worn out sincronizers in you transmission. They are used to mesh the gears between shifts. They are made of brass and wear out easily on the 2nd gen cars. It grinds normally going into 2nd gear and into 3rd if its really worn. If you want a stronger transmission buy the 93 and up 3rd gen tranny. It is an upgraded transmission with dual sincros. Yours does need rebuilt. Or you can find one on the MR2 board for a good price used. I prchased a 93 trans for $1000. An older one will be about 200. Also it depends if its turbo, lsd or not. Good luck!
Either your clutch is getting bad, or you're shifting down too soon, and up too late. Try double clutching. Push in your clutch and push it into neutral. Release the clutch, fan the gas pedal, push the clutch again and shift into 1st. All this does is sychronize the speed of the transmission with the speed of the engine. There were, in the 60's, a lot of cars with the old "three on the tree" that you had to do this every time, and you get pretty good at it after a while.
With ALL due respect, I speak from a 30 year Career of AUTO & Heavy Truck Experence of Fleet Management and Personal Customer Auto Care, and by NO means do I mean any Disrespect to you here.
As Long as is Does Not grind while UP SHIFTING you R fine , DOWNSHIFTING into 1st Gear BEFORE 20 mph is a Disaster Waiting to Happen EXAMPLE> Just BECAUSE a car CAN run at 120mph does not Mean One SHOULD do it. If it downshifted to 1st gear before 20 mph with OTHER Clutch that was due to WEAR, there MAY be a bit of AIR in the Release bearing or Slave cylinder, That needs to be BLED OUT, DOWNSHIFTING IS NOT A recommended Practice Unless its an EMERGENCY STOP condition, as It Causes Premature Wear on Clutch Disc. I Know this MAY seem UNTRUE as you may have done it for years But IN FACT A Clutch is MADE to Simply Get From LOWER GEAR TO HIGHER GEAR, but if you Downshift ALL of the time you WILL Subject the Clutch to TWICE the WEAR you Should THUS WEARING it OUT TWICE AS FAST $ thats $$$$. A good number of shops wont Advise you this Far as it Would REDUCE THERE Profit. I Hope I Have shed some Light on this delima, And Think of the MONEY you Can SAVE on TWICE the Longevity with 1 Clutch Job. Again I hope this Helps you, And If you FEEL that I Deserve A GOOD RATING Please do so ,as Most folks get there Answers and GO without Rating US LoL Thank You !
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