i just brought my 06 xa into the dealer today. its been grinding NASTY into second gear and sometimes it even does it from neutral to 1st. they just called me and said the "synchros" are bad and they need to be replaced. does anybody know what causes the synchros to go bad in only 6000 miles?? seems odd to me. maybe they were just defective.

 

you probably shift too hard.

 

what do you mean by too hard? my rpms are to high or do you mean like pulling the shifter to hard? ive wanted to cut the shift rod and re thread it to make it about an inch shorter

 

either or, but more or less referring to slamming it intoi gear in a quick shift scenario.

 

This has been happening to me since I've had 3k miles. Pretty ____ty gearbox.

 

hayalex6, bring it to the dealer, its all covered on warranty. there paying for a rental for me as well.

 

they won't cover my trans. guess i shouldda had em fix thge synchro's before the clutch that they wouldn't cover went out. now i know they wont cover it with my spec stage 2+ clutch in there. weak suck and a half!!!

 

oh awesome. I'll try and swing by tomorrow.

 

same happened to me, but mine was around 2500 miles. The more I read, the more I see it happening to people who like to shift fast... I had a TWM shifter on mine - only to reduce the reach from 4th to 5th, but guess I was shifting fast too - only car with a stick before this one (that I drove regularly) was a V8 mustang.

Dealer replaced my transmission under warranty and asked me to remove the shifter - I did. Mine turned into a nightmare that I'm still dealing with (see my 'fed up with xb' thread if you want the details - they've now had my car 30 or my 75 days of ownership).

I'll never put the short shifter back on my car when I get it back & I'll drive a little more cautiously (not that I drove it hard before).

 

It's not the shifters fault, I think it shortens the throw quite a bit.

 

get the trd quick shift...

 

If you've ever "missed" a powershift into second, the second gear synchros are blown. That's not only with a box, but with all but a few manual transmissions.

And it's important to remember that x series Scions are based on econobox rather than performance parts, so they're not built to take a beating...

My TRD shift kit improved the feel of second gear tremendously- the stock unit was kinda vague, which will lead to missed shifts and synchro damage, while the TRD is notchier, and more positive... heavy shift ***** also improve shifter feel, imo...

The truth, however, is that if you want it to last, you need to play nice- particularly when the vehicle is new, and the driver hasn't yet developed an intimate feel for the machine...

 

I don't believe that it's the short shifters fault either, but the dealer has stated there could be warranty issues in the future if I bring it back with the shifter installed. I'll likely be getting rid of the car as soon as I have an opportunity - even if it is just to get another xb (from a different dealer).

The shifter will cause faster shifts though unless you change your driving style. If the throw from 1st to 2nd is reduced by 40% and you still move your arm/hand the same speed as you did before, you will be shifting faster. I never pictured the xb as being a performance car - I didn't buy the shifter so I could shift faster... I bought it for the shorter throws which resulted in quicker shifts.

 

After spending a week's pay to replace synchros on a BMW in 1972, I have let the transmissions tell me how they like to be shifted.
Shifting is not like working a switch. During the shift, a lot of complicated things must happen rather quickly. Best to shift in a deliberate manner and let them happen.

 

I've grinded forgetting to push the clutch in far enough. It's always 2nd to 3rd for me. I usually shift off-throttle so I hope it'll be OK.

 

mine grinds from 2nd into 3rd as well i was hoping to get a day off to take it to the dealer this blows

 

I'm not complaining really because it's just when I screw up. There shouldn't be any resistance to shifting if it is done right.