# Really hard braking, damage transmission? **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [May 2, 2014, 7:23pm UTC](https://community.cartalk.com/t/really-hard-braking-damage-transmission/84876 "2014-05-02T19:23:03Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![xaml](https://avatars.discourse-cdn.com/v4/letter/x/2bfe46/32.png) [@xaml](https://community.cartalk.com/u/xaml)\ **Post date:** [May 2, 2014, 7:23pm UTC](https://community.cartalk.com/t/really-hard-braking-damage-transmission/84876/1 "2014-05-02T19:23:03Z")
I had to really hard brake today over a very very short distance…the tires locked and the car slid for about 5 feet. Car is 2000 corolla, 4-spd auto. As soon as I came to a full stop, I notice the engine was still “spinning” like it was in second gear…because the RPM was around 1000rpm (idle is 650). As soon as I started moving, there was a slight clunk noise (sounded like it came from CV half axle/transmission). Although rare, This also happened a couple of times before when hard braking. It downshifts to 2…idles around 1000rpm for a couple of seconds…and then there is a “slight” clunk noise. Other than this, the transmission/engine has been very smooth and the car has no problems. ---
**Author:** ![wesw](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/wesw/32/2713_2.png) [@wesw](https://community.cartalk.com/u/wesw)\ **Post date:** [May 2, 2014, 7:25pm UTC](https://community.cartalk.com/t/really-hard-braking-damage-transmission/84876/2 "2014-05-02T19:25:37Z")
have you checked the fluid level lately? changed the filter ever? ---
**Author:** ![xaml](https://avatars.discourse-cdn.com/v4/letter/x/2bfe46/32.png) [@xaml](https://community.cartalk.com/u/xaml)\ **Post date:** [May 2, 2014, 7:26pm UTC](https://community.cartalk.com/t/really-hard-braking-damage-transmission/84876/3 "2014-05-02T19:26:38Z")
There is no transmission filter for this car. The fluid level is good…there have been no problems with the trans/engine. The problem above is very very rare…just happened a couple of times (related to very hard braking) ---
**Author:** ![wesw](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/wesw/32/2713_2.png) [@wesw](https://community.cartalk.com/u/wesw)\ **Post date:** [May 2, 2014, 7:31pm UTC](https://community.cartalk.com/t/really-hard-braking-damage-transmission/84876/4 "2014-05-02T19:31:41Z")
you got me then, but there are plenty of experts here. some one will have better ideas ---
**Author:** ![melott](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/melott/32/10827_2.png) [@melott](https://community.cartalk.com/u/melott)\ **Post date:** [May 2, 2014, 7:34pm UTC](https://community.cartalk.com/t/really-hard-braking-damage-transmission/84876/5 "2014-05-02T19:34:56Z")
A guess–maybe if the motor and transmission mounts are old and loose, things shifted a bit. could be replaced… ---
**Author:** ![PvtPublic](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/pvtpublic/32/13089_2.png) [@PvtPublic](https://community.cartalk.com/u/PvtPublic)\ **Post date:** [May 3, 2014, 12:03am UTC](https://community.cartalk.com/t/really-hard-braking-damage-transmission/84876/6 "2014-05-03T00:03:59Z")
If your 4 speed auto is an A245E, you do have a filter. Who told you you didn’t have one? I don’t think Toyota has any filterless automatics. I’m not sure about the idle but I would check all motor and transmission mounts. ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [May 3, 2014, 3:55am UTC](https://community.cartalk.com/t/really-hard-braking-damage-transmission/84876/7 "2014-05-03T03:55:03Z")
Does it have anti-lock brakes?