When I am in park and hit the brake, it sounds like my car is reving up. When I am driving down the road and come to a fast stop, the motor will shut off, but all power stays on. I noticed that with a full tank of gas, it doesn't die as easy, bbut it will still die if I have to come to a quick stop.
I have read that it could be the booster, or the tcc converter.
I would be very greatful for any help, also costs of the repair...
Someone also told the that the transmission could be going out, is that possible??
2007-02-13 12:09:31 · 10 answers · asked by tashae_33 2 in Cars & Transportation ➔ Maintenance & Repairs
Your brake booster runs off manifold vacuum pulling on a rubber diaphragm inside the booster housing. I suspect you have a vacuum leak in your brake booster - possibly a split in the diaphragm. Whenever you push on the brake pedal, you hear the noise of the leak. When stopping quickly, the leak is preventing the engine from idling correctly, so the load that the transmission puts on the engine when stopped in gear is more than it can handle - so it stalls. When you are in park, there is no load on the engine, so it keeps running, and you hear the noise instead.
There may be other possibilities, but this is the only one I can think of that matches all of the symptoms. I have no idea what this would cost to repair - but no where near as much as rebuilding the transmission. Hope this helps!
2007-02-13 12:22:56 · answer #1 · answered by Me 6 · 0⤊ 0⤋
You didn't mention the make and model of the vehicle but it sounds like a brake booster diaphragm leak. When you step the brake the diaphragm in the booster leaks air into the engine. This extra air is not metered and added on to the air allowed in by the idle air control valve (if the vehicle is fuel injected) and will make the engine idle get higher. In some vehicles this can trigger a lean condition trouble code (check engine light would go on) and cause a trim-up on the fuel system. The same vacuum air leak would cause the vehicle to stumble or stall when it is under load at a traffic light. One way to tell this on your own would be to disconnect the vacuum hose leading to the booster and plug it up. If the engine idle stays normal in park then that's the culprit (also inspect for leaks on the hose itself or the check valve). Be careful if you drive the vehicle with the hose blocked off to test the dying out part because you will not have vacuum assist and the brake pedal will be very hard to press to stop the vehicle. If the booster is the problem, the price will depend on the make and model of the vehicle and so will the labor cost. Some cars require other parts to be removed, and more labor hours, to get the booster out (certain Lumina owners will feel that in the wallet).
Generally you can purchase a remanufactured unit for $180.00 to $350.00. A brand new one would be at least twice as much. Good luck!!
2007-02-13 12:51:55 · answer #2 · answered by geno887 2 · 0⤊ 0⤋
confident, that's attainable tocontinual with the parking brake on. It probable felt such as you have been beginning on a hill each time you took your foot off the take carry of. you probable had to press the gas pedal greater durable than known. employing with the parking brake on will positioned on down the shoes, if the shoes are already just about long gone it will reason the shoes to dig into the drums. The brakes gets excessively warm! And the take carry of would overheat and scent like it is burning.
2016-10-02 02:36:49 · answer #3 · answered by empfield 4 · 0⤊ 0⤋
Looks like there is a vacuum leak somewhere in the power booster area - likely the booster itself. Pinch the rubber hoses that go from engine to the booster with visegrips, and see if it still does that.
2007-02-17 10:59:08 · answer #4 · answered by Anonymous · 0⤊ 0⤋
i have an 06 volvo s40 that dies when i step on the brakes, any ideas whats going on with my car? it doesn't matter if its driving or in park once i step on the brakes it stalls and dies
2016-07-06 12:10:00 · answer #5 · answered by abiodun 1 · 0⤊ 0⤋
Well, I don't know what type of vehicle this is, nor do I know when it was built. I am willing to bet, though, that it is at least 10 years old and that it has a vaccum leak. Most likely a dry-rotted vaccum line. Check that first. The fumes from unleaded gasoline tend to dry-rot rubber. Good luck.
2007-02-13 12:26:56 · answer #6 · answered by jeff s 5 · 0⤊ 0⤋
I don't think that has anything to do with the transmission. Possibly something electrical $$$!
2007-02-13 12:12:54 · answer #7 · answered by piemat 2 · 0⤊ 0⤋
tgheres a leak in thevacum buster or vacum line to intake or an electrical wire to ignition coil or module or ignition switch
2007-02-13 12:31:38 · answer #8 · answered by Anonymous · 0⤊ 0⤋
there is a sensor that may be going out...can't remember which one...take to AutoZone for free computer diagnosis or to a repair shop...it won't get better without repair
2007-02-13 12:18:20 · answer #9 · answered by Library Eyes 6 · 0⤊ 0⤋
it sounds like to me that the i.a.c is bad that is the idle air control valve
2007-02-13 12:17:35 · answer #10 · answered by dowayne 1 · 0⤊ 0⤋