Q: My third gear is grinding

asked by on November 12, 2016

When I shift into third gear or even lightly push towards third without the clutch the syncros are grinding. This all started after it was bumped into third gear without the clutch engaged. What could be wrong for and how expensive would it be to fix?

My car has 82000 miles.
My car has a manual transmission.

Grinding sound from transmission Inspection $94.99 - $114.99 Get a Quote

This may suggest failing synchros. As you may know, when a clutch drags, it is not letting go of the disk fully which overloads the synchros and burns up the friction surfaces quickly. Synchros work by speeding up or slowing down the input shaft and clutch disk by acting like a brake. If the clutch is dragging, the synchro friction surface is trying to speed up and slow down the engine’s mass, which is impossible. I would recommend having an expert from YourMechanic come to your location to diagnose and inspect your transmission.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How do you operate the liftgate and liftgate window?
Your SUV has a rear liftgate that gives you access to the back cargo area. You can also use the liftgate window to access it (in a more limited way). There are controls for both the liftgate and the liftgate...
Fuses keep blowing
Greetings. It is highly possible that the light bulbs themselves could be shorting out the system due to incorrect bulb installment. Verify that the part numbers on the bulbs are the proper fit for your vehicle. Incorrect bulbs can short...
Need to replace clutch but also looks like bell housing cracked around the starter to transmission?
Hello there. Clutch replacement in your 2006 Dodge Dakota is a large job. To replace the clutch, many components such as the transmission and driveshaft must be removed. If you are unsure at all about doing this job, it should...
Rod Knock
Hello. This engine does have a series of common issues that can cause a knock. I have seen quite a few of them with rod knocks, but most of the time the issue is the timing chain. The warranty company...
2011 Jeep Wrangler Sport Unlimited Oil Light
This light will usually come on when one of two things are happening. Either the motor is in fact low on oil or the oil pressure sending unit (https://www.yourmechanic.com/services/oil-pressure-sensor-replacement) is not working properly and may be producing a faulty reading....
Car stopped while driving and won't start even with a jump.
Hello, thank you for writing in. The starter would not prevent the vehicle from driving. Once it is used to turn over the engine when starting, it is useless to the vehicle. It is more likely a battery or alternator...
Ok I want to know if I can put a sr20 from p11 wagon into a u12 bluebird with a ca20
Hi there. Sorry, but unfortunately, we don't service those types of vehicles. You might be better served to contact a local commercial or diesel mechanic to receive advice about this type of engine swap. Good luck.

Related articles

A Buyer’s Guide to the 2011 Mitsubishi Endeavor
The The 2011 Mitsubishi Endeavor is a crossover SUV that manages to provide decent comfort, power and performance into a single package. This also marked the final year of production for the SUV, as it was phased out due to...
The Best Used Cars to Buy If You're an Uber or Lyft Driver
Are Are you thinking of becoming a driver for Uber or Lyft? That could be an exciting career change – you’ll get to meet a lot of interesting people, and if you love to drive, what better way to spend...
Symptoms of a Bad or Failing Clutch Cable
If your manual car's transmission is slipping out of gear or clutch pedal is hard or sinking to the floor, you may have to replace the clutch cable.