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Braking problem '88 Turbo

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Old 11-12-08, 05:34 PM
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Exclamation Braking problem '88 Turbo

When I press the brakes slowly I get no braking. When I just stomp the brakes or push hard on them they work fine. I had my brakes bled and that didn't help. What do I need to replace? This is for my 10th AE too. Thanks.
Old 11-12-08, 05:48 PM
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Sounds like the master cylinder.
Old 11-12-08, 05:49 PM
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Originally Posted by RED1990GTU
When I press the brakes slowly I get no braking. When I just stomp the brakes or push hard on them they work fine. I had my brakes bled and that didn't help. What do I need to replace? This is for my 10th AE too. Thanks.
Could be the vacuum booster system. Test it according to the factory shop manual. FSM is available at one of the links in the 2nd gen FAQ. It's a simple test.
Old 11-20-08, 02:38 PM
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Well I still cannot figure out what is wrong. I searched a bunch and didn't find any other problems like mine. I can push the brakes to the floor if I push slowly. If I push fast/hard on them they work just fine.
Old 11-20-08, 03:54 PM
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Sounds like the brake booster to me...
Old 11-20-08, 04:42 PM
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try disconnecting the booster to see if that is the problem. are you sure all calipers are functioning?
Old 11-21-08, 02:02 PM
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I will try to disconnect the brake booster today. It feels like they work fine when I push them quickly. I had a pinched brake booster line on my 90 non turbo and it didn't feel anything linke this.
Old 11-21-08, 02:21 PM
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I'm tempted to say master cylinder. My 240 suffered a similar problem, and it turned out to be a combination of a bum master cylinder and a leaky seal on the brake booster.
Old 11-21-08, 04:35 PM
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Have you noticed any leaks?
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