The car runs great. But when the gear is on drive and my foot is on the brake, it skakes...
I use the best gas. Any ideas? What can I do yo help?
2007-05-21 09:36:56 · 11 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
Not braking...but when it's still. It shakes a little not a falling apart shake. You feel it more when you hands are on the wheel or your hand on the gear shift.
2007-05-21 09:46:36 · update #1
Engine misfire.
Loose spark plug wire??
Fouled spark plug??
Vacuum leak at the engine intake manifold hoses??
2007-05-21 09:52:18 · answer #1 · answered by Mr. KnowItAll 7 · 0⤊ 0⤋
You have a very bad vacuum leak inside the booster, which is that big round thingy behind the master cylinder.
When ever you step on the brake, a valve opens allowing vacuum to "assist" your braking. The vacuum is confined by a large rubber diaphragm and for whatever reason it is has developed a leak.
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Your engine uses vacuum to control spark advance and throttle position, so when ever the vacuum pressure drops your engine runs bad.
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Since this occurs only when you step on the brake I know that the leak is after the actuation valve and is inside the booster.
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The booster needs to be replaced.
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You can double check me by plugging the hose that leads to the booster and then step on the brake. If the engine doesn't shake, then you know I am right.
2007-05-21 09:54:32 · answer #2 · answered by MechBob 4 · 0⤊ 0⤋
when was the last time u had a tune up or checked for vacuum leaks ? it would be best to edit and give a little more info like year and kind of vehicle and the mileage on it.
all the best
2007-05-21 09:56:28 · answer #3 · answered by Edward Z 3 · 0⤊ 0⤋
My dad has been a machanic for 40 years. The Rotors are warped.
2007-05-21 10:28:11 · answer #4 · answered by Haley P 2 · 0⤊ 0⤋
depending on yr and make,your front rotors @ or back rotors\drums are in need of getting turned.their worped if idling have someone put car in gear and listen for air leaks,take b-12 and spray liberaly if idle pics up you got vaccume leak
2007-05-21 09:48:52 · answer #5 · answered by mickey g 1 · 0⤊ 0⤋
IF IT HAPPENDS SITTING STILL YOU MAY HAVE A VACUUM LEAK FROM THE POWER BRAKE BOOSTER.
2007-05-21 09:42:34 · answer #6 · answered by rickb3825 3 · 0⤊ 0⤋
You either need new brake pads or your roaters are warpped.
2007-05-21 09:41:36 · answer #7 · answered by Constance C 4 · 0⤊ 1⤋
check the timing
2007-05-21 09:44:09 · answer #8 · answered by ? 5 · 0⤊ 0⤋
well your question is kinda skipping around not sure?.... but it sounds like you have warped brake rotors.
2007-05-21 09:44:47 · answer #9 · answered by wytetrash2004 2 · 0⤊ 1⤋
I bet you need your tires realligned or rotated.
2007-05-21 09:45:00 · answer #10 · answered by jojo 4 · 0⤊ 1⤋