I have a 2009 Toyota Corolla XRS with 79,000 miles and at 76k I blew the clutch so I took it to toyota and had it replaced, now that it‘s replaced its hard to put in 3rd gear, before I blew the clutch it never did that, and now toyota is telling me I need a new transmission, but some people have told me the clutch may have to be adjusted. Before I got the clutch replaced all gears would go in good now after it got replaced sometimes its hard to put in 3rd gear and sometimes its easy to put it in, and when its hard to put in it grinds and when it goes in easy it doesn‘t grind, none of this happened before changing the clutch. They also said they didn‘t remove the transmission to change the clutch.
Shouldn't it be under warranty? If not don't go to Toyota. Find a reputable independent mechanic in your area. They won't try to make your car brand new and can cost like a 1/3 of the price of what the dealer will charge. Sounds like the clutch might just need to be adjusted a little.
I'm thinking that it's the transmission. If you've got no problems with any other gear, I don't see how it could be a defective or mis-adjusted clutch. They would not have had to open up the transmission to replace the clutch. But it's possible that the shifter linkage got mis-aligned during the clutch job. That's worth checking (easy and cheap). You might also try pausing a bit longer in neutral before engaging third gear, or even double-clutching (release and re-engage the clutch pedal while in neutral during the shift). But do have your shop check the shifter linkage first. Also the motor mounts and the transmission mounts, which can affect the alignment between the shifter and the transmission in a front-wheel-drive car.
