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Old 08-04-2012, 12:22 AM   #16
Walis
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Re: 2000 Ford Taurus - HEAVY JERKING

pardon my lack of knowledge but where's the brake booster located and what does it look like?
thank you.
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Old 08-04-2012, 08:50 AM   #17
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Re: 2000 Ford Taurus - HEAVY JERKING

The brake booster is the large drum like thing between the brake master cylinder (with the brake fluid reservoir) and the brake pedal assembly. It will be under the hood and the master cylinder is mounted to it. You can do a Google image search for "brake booster" to get a better idea what it looks like.

I'm curious where this is going though as I don't see how a brake booster issue could cause brakes to not retract. It could cause a hard pedal and it could cause a misfire due to vacuum leak, but stuck brakes?

-Rod
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Old 08-04-2012, 10:19 AM   #18
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Re: 2000 Ford Taurus - HEAVY JERKING

As you know, a brake booster has vacuum applied to both sides of a diaphragm, and when the pedal is applied, it opens a valve that vents the vacuum on one side, giving the asist. If that valve is sticky or doesn't close fully, it can apply the brakes slightly. Not a common failure, but did happen in the CV/GM/TC models in the 90's.
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Old 08-17-2014, 11:38 PM   #19
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Re: 2000 Ford Taurus - HEAVY JERKING

It sounds like the car needs some new rotors.
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Old 08-18-2014, 12:08 AM   #20
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Re: 2000 Ford Taurus - HEAVY JERKING

Since the jerking happens under acceleration, not braking, the issue is not likely to be brake rotors. When brake rotors have too much runout the jerking happens when applying the brakes, not when accelerating.

-Rod
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Old 08-19-2014, 05:19 PM   #21
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Re: 2000 Ford Taurus - HEAVY JERKING

Rod,
I thought you could use a Thanks for your patience with the newbies. He only has 3 posts and is picking a two year old entry to throw 2 cents at it that clearly don't apply. Keep dispensing your wisdom with kindness.
Randy
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Old 08-19-2014, 11:18 PM   #22
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Re: 2000 Ford Taurus - HEAVY JERKING

He's also from Iowa so I will cut him some slack.

-Rod
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