# 2005 Ford Focus - Brake issue **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** brakes, ford\ **Created:** [August 9, 2023, 10:40pm UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193 "2023-08-09T22:40:08Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![paulcaffrey](https://avatars.discourse-cdn.com/v4/letter/p/9de0a6/32.png) [@paulcaffrey](https://community.cartalk.com/u/paulcaffrey)\ **Post date:** [August 9, 2023, 10:40pm UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/1 "2023-08-09T22:40:08Z")
when braking the car leaping forward ---
**Author:** ![davesmopar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/davesmopar/32/41750_2.png) [@davesmopar](https://community.cartalk.com/u/davesmopar)\ **Post date:** [August 10, 2023, 12:42am UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/2 "2023-08-10T00:42:29Z")
> [@paulcaffrey](#): > > when braking the car leaping forward Welcome to the forum… Without punctuation, it is hard to know if you are making a statement or have an issue with a question… Without more info, my crystal ball says your brake rotors are warped… When you say _ **leaping forward** _, what exactly are you experiencing?? Is the engine revving up? Does it _feel_ like someone is rear-ending you?? ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [August 10, 2023, 9:43pm UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/3 "2023-08-10T21:43:51Z")
Or, is your torque converter locking up? ---
**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:** [August 10, 2023, 10:47pm UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/4 "2023-08-10T22:47:04Z")
I had a problem like that on my truck one time, caused by too-high idle rpm. OP, suggest to ask your shop to check your car’s idle rpm. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [August 10, 2023, 10:52pm UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/5 "2023-08-10T22:52:37Z")
Check the level of the transmission fluid and the color. . Tester ---
**Author:** ![davesmopar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/davesmopar/32/41750_2.png) [@davesmopar](https://community.cartalk.com/u/davesmopar)\ **Post date:** [August 10, 2023, 11:16pm UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/6 "2023-08-10T23:16:06Z")
Also at what speed is this happening?? ---
**Author:** ![paulcaffrey](https://avatars.discourse-cdn.com/v4/letter/p/9de0a6/32.png) [@paulcaffrey](https://community.cartalk.com/u/paulcaffrey)\ **Post date:** [August 12, 2023, 12:45am UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/7 "2023-08-12T00:45:21Z")
it is speeding up and leaping forward when i try to stop my foot is pushing on the brake ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [August 12, 2023, 1:00am UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/8 "2023-08-12T01:00:17Z")
Then the idle air control valve may be defective. ![6767_ULTRAPOWER AIRTEX_4J1066_4](https://global.discourse-cdn.com/cartalk/original/3X/5/f/5f5635fd1220a45c9bac878232bb4c1c3cedea37.jpeg) The IAC valve is what controls the engine idle speed anytime your foot is off the accelerator. Tester ---
**Author:** ![davesmopar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/davesmopar/32/41750_2.png) [@davesmopar](https://community.cartalk.com/u/davesmopar)\ **Post date:** [August 12, 2023, 1:04am UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/9 "2023-08-12T01:04:35Z")
Do you have a CEL (check engine light) on?? If so, then what are the codes??? ---
**Author:** ![paulcaffrey](https://avatars.discourse-cdn.com/v4/letter/p/9de0a6/32.png) [@paulcaffrey](https://community.cartalk.com/u/paulcaffrey)\ **Post date:** [August 12, 2023, 1:38am UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/10 "2023-08-12T01:38:56Z")
yes but it doesnot affect the car performant it drives fine i donot know the codes my mecanik know them would cause the car race where the brake are appled ---
**Author:** ![davesmopar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/davesmopar/32/41750_2.png) [@davesmopar](https://community.cartalk.com/u/davesmopar)\ **Post date:** [August 12, 2023, 1:55am UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/11 "2023-08-12T01:55:42Z")
> [@paulcaffrey](#): > > yes but it doesnot affect the car performant it drives fine Then why are you asking about _ **when braking the car leaping forward** _??? Doesn’t seem fine to me… > [@paulcaffrey](#): > > i donot know the codes my mecanik know them would cause the car race where the brake are appled Then why can’t your mechanic figure out what is wrong with your vehicle if he/she is that knowledgeable?? ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [August 12, 2023, 12:22pm UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/12 "2023-08-12T12:22:21Z")
**Any** CEL issue needs to be addressed, **and** you need to find a better mechanic. Testor is likely on the right track. ---
**Author:** ![paulcaffrey](https://avatars.discourse-cdn.com/v4/letter/p/9de0a6/32.png) [@paulcaffrey](https://community.cartalk.com/u/paulcaffrey)\ **Post date:** [August 12, 2023, 1:43pm UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/13 "2023-08-12T13:43:43Z")
taken it easy i was just looking for information on the problem you have been very helpful thank you ---
**Author:** ![JayWB](https://avatars.discourse-cdn.com/v4/letter/j/e480ec/32.png) [@JayWB](https://community.cartalk.com/u/JayWB)\ **Post date:** [August 12, 2023, 10:24pm UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/14 "2023-08-12T22:24:49Z")
I’m thinking the OP is confusing “leaping forward” with the sensation you get when the brake rotors are warped. It’s not leaping forward, it’s bad brakes. ---
**Author:** ![paulcaffrey](https://avatars.discourse-cdn.com/v4/letter/p/9de0a6/32.png) [@paulcaffrey](https://community.cartalk.com/u/paulcaffrey)\ **Post date:** [August 12, 2023, 11:57pm UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/15 "2023-08-12T23:57:29Z")
thank you ihad front brakes donedotknowi if replace the rotors on not iwill ask him monday the rear rotors were a miss do you think that is causing the brakes toslip the engine races foward when i step on the brakes i will start with rear rotors and go from there ---
**Author:** ![old\_mopar\_guy](https://avatars.discourse-cdn.com/v4/letter/o/6bbea6/32.png) [@old\_mopar\_guy](https://community.cartalk.com/u/old_mopar_guy)\ **Post date:** [August 13, 2023, 12:08am UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/16 "2023-08-13T00:08:18Z")
I would advise **not** telling your mechanic what to replace but let him determine what needs to be replaced. ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [August 13, 2023, 12:18am UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/17 "2023-08-13T00:18:51Z")
> [@paulcaffrey](#): > > the engine races foward when i step on the brakes i will start with rear rotors and go from there The engine should not race when you apply the brake, that is the problem, not the rear brake rotors. You need to determine why the engine surges while the car is stopped. > [@paulcaffrey](#): > > i donot know the codes my mecanik know them would cause the car race where the brake are appled Tell your mechanic that you want that fixed now. ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [August 13, 2023, 10:50am UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/18 "2023-08-13T10:50:57Z")
I will say it again, you need a **better** mechanic. The guy you are using, as far as I can determine from your comments, has **not** stated what the codes are causing your CEL to be on. > [@paulcaffrey](#): > > yes but it doesnot affect the car performant it drives fine Leaping forward, engine racing—-is **not** driving fine. Apparently you do not live in a state, such as Florida, that does not require safety or emission testing. A CEL would not pass inspection in states that do require testing. Bite the bullet, get the car diagnosed, expect to pay a diagnostic fee, and repaired by a **competent** shop. ---
**Author:** ![davesmopar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/davesmopar/32/41750_2.png) [@davesmopar](https://community.cartalk.com/u/davesmopar)\ **Post date:** [August 13, 2023, 1:22pm UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/19 "2023-08-13T13:22:38Z")
Read my very 1st post, the 1st reply, I said my crystal ball says your rotors are warped… BUT the OP is saying that the engine is racing (revving up)… So either the OP has a giant foot and it hitting the gas at the same time as the brake then there is a problem (safety also) that requires repair… That being said , now I am wondering if the OP is a left foot braker and pushing with both feet… or just simply NOT sliding his/her foot all the way off the gas pedal while depressing the brake pedal… But if we new why the CEL was on it would help shed a little light on the situation… Either way the OP needs to find a competent mechanic as already mentioned… ---
**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:** [August 13, 2023, 11:52pm UTC](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193/20 "2023-08-13T23:52:03Z")
Wondering, could a faulty brake booster (split diaphragm etc) cause an increase in engine speed when the brake pedal is pushed? The booster has a good size path into the intake manifold, an air leak that got into the engine there could cause the engine rpm to rapidly increase. OP might ask their mechanic if that’s a possible explanation. I was measuring the intake manifold vacuum on my Corolla one time, had to remove a rubber plug so I could install my vacuum meter there. when I removed that plug the engine rpm immediately increased. Not dramatically, but noticeably. The plug was covering a very small opening. [Next page](https://community.cartalk.com/t/2005-ford-focus-brake-issue/192193.md?page=2)