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The mkiv Supra Owners Club

Gearbox issue: Is it normal or not?


SupraDan24

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Keep forgetting to post this so will do it now while i remember. It's hard to explain this in words so i'll do my best, basically everytime i shift up into a gear that requires me moving the gearstick backwards ie 2nd, 4th and 6th for a second or two its hard to get into gear and it meets resitance (i can actually feel something move forward and hit into the gearstick internally as the car lurches forward as i take my foot off the accelerator, preventing the gear stick from moving back), then as the weight shifts back neutral again it slips into gear no problem. Shifting up into a gear which requires moving the gearstick forward ie 1st, 3rd and 5th, theres no issue whatsoever. Is this normal....it doesnt feel normal :blink:

 

Dan

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I had this problem with an old car I had years ago about a month after, it wouldnt even move into those gears and had to replace the whole box. I was to young to ask/care But that's just my experience!

I need to get this ridiculous statue out my living room supra dan lol.

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Yeah, i know theres a few issues with the 6 speeds, thats why i asked on here incase others have had the exact same thing. Clutch is fine, is nearly new. I havent checked the box oil tbh as it feels more of a mechanical issue, as i can actually feel something slide forward and prevent the gearstick from moving backwards. Soon as the weight moves back to neutral ie the car is no longer lurching forward after initial rapid deceleration as you take you foot off the accelerator, i feel whatever it is slide backwards again and the gearstick can move into 2nd or 4th no problem.

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Lift up the dash panel around the gear stick, lift up the rubber gator around the stick (remove 4 bolts) and check that the 4 bolts that are underneath are still there and not blocking the gear stick from moving correctly. You may find one of them has come out and sitting there.

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Wouldnt like to because you dont know, or you do know and you think its pricey lol. I just want to know whats doing it, i'll worry about the cost later.

 

lol its because i dont no fella...but i know it dosent sound right

i have gear selecting problem with my 6 speed at the mo but thats down to syncro

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Lift up the dash panel around the gear stick, lift up the rubber gator around the stick (remove 4 bolts) and check that the 4 bolts that are underneath are still there and not blocking the gear stick from moving correctly. You may find one of them has come out and sitting there.

 

Steve, you might be onto something there fella. I took out the dash last week as i'm spraying it white, i remove the panel around the gear stick and one of the bolts (top left) holding the rubber gaitor down wasnt in properly and the gaitor was raised 2 inches or so in that corner, i didnt think anything of it at the time. Do these have any baring on the ones beneath, or are they simply to hold the gaitor on?

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Steve has hit on one of the potential problems with this, I'll add another common one..

 

The shifter bushes can often wear out meaning that when you pull or push the shifter the whole shifter support mechanism can twist slightly out of allignment resulting in a difficult engagement. The symptons myself and a few other locals have had for this is that 2nd, 4th and 6th can be difficult to engage so my money is on those two bushes being worn.

 

It's a bit of a fiddle to fix as the box has to be dropped slightly to get access to them, good news is that they are external so no box removal is required. They are about £30 a pair from Toyota.

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The shifter bushes can often wear out meaning that when you pull or push the shifter the whole shifter support mechanism can twist slightly out of allignment resulting in a difficult engagement. The symptons myself and a few other locals have had for this is that 2nd, 4th and 6th can be difficult to engage so my money is on those two bushes being worn.

 

 

I would bet on the bushes too, unless everything is in the correct position, the box feels horrible. Just the slightest play in the bushes, and the alignment error is magnified by the time the movement gets to the selectors in the box.

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Steve has hit on one of the potential problems with this, I'll add another common one..

 

The shifter bushes can often wear out meaning that when you pull or push the shifter the whole shifter support mechanism can twist slightly out of allignment resulting in a difficult engagement. The symptons myself and a few other locals have had for this is that 2nd, 4th and 6th can be difficult to engage so my money is on those two bushes being worn.

 

It's a bit of a fiddle to fix as the box has to be dropped slightly to get access to them, good news is that they are external so no box removal is required. They are about £30 a pair from Toyota.

 

Cheers guys, i'll give the 4 bolts a check myself when i get home, if it doesnt seem to be that then i'll ask Dude if he can take a look at the bushes for me. Homer, do you have the P/N for the bushes please mate? If they're only £30 i'll get some ordered and take them up to Dude with the car, if it turns out not being them then i'll just stick them in the spares box :p

I would bet on the bushes too, unless everything is in the correct position, the box feels horrible. Just the slightest play in the bushes, and the alignment error is magnified by the time the movement gets to the selectors in the box.
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