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no brakes!!

 
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  #1 (permalink)  
Old 15 Sep 2007, 06:15 pm
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Join Date: Sep 2007
Location: northwest Arkansas
Posts: 21
Default no brakes!!

I have a 2003 GT w/ 80K miles that has been a pretty good car until recently. The issue that currently has me stumped has now happened twice. As I was pulling into our subdivision the brake pedal was suddenly hard as a rock, moving less than 1/2 inch, and the engine was stuck in a very high idle- over 3000 rpm.

The car has now been sitting for several hours. When I restarted it just a few minutes ago the pedal is still very firm, but the idle speed has dropped to the 1200-1500 rpm range. I blipped the throttle trying to bring the idle speed down, but nothing changed.

Can anyone give me an idea of what the issue might be?

Thanks for any help. I have been reading this forum for a couple months now and really enjoy all the information.
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  #2 (permalink)  
Old 15 Sep 2007, 06:47 pm
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Join Date: Sep 2001
Posts: 27,744
Default Re: no brakes!!

I can only take a wild guess at your problem.

According to the Haynes Manual: The power brake booster utilizes engine manifold vacuum and atmospheric pressure to provide assistance to the hydraulically operated brakes.

One. Like the power steering, if the pump goes (mine did) your power steering fails and steering is like turning a Mac Truck. If the brake booster goes, your pedal will feel like the old non-power brakes, high pedal requiring lots of leg effort.

Two: If the vacuum line to the brake booster goes, so does your power brake booster and also could lead to a vacuum leak in the intake system (if the vacuum line uses a "T" connector, which would cause the high idle problem.

So, check all around for a disconnected rubber vacuum line especially around the right side and around the brake booster.
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Old 15 Sep 2007, 08:27 pm
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Join Date: Sep 2004
Location: .
Posts: 271
Default Re: no brakes!!

I have an 03 GT, and the same thing happened to me. A line running off of the brake vaccum boost came off. After that I tie wrapped all of the vacuum lines. Remove the air box to turbo hose to get access to all of the lines. I used bright colored tie wraps (yellow & orange) so it would be easy to see them.
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Old 16 Sep 2007, 09:00 am
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Default Re: no brakes!!

like the other guys said i think its a hose that has come off
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Old 16 Sep 2007, 11:34 am
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Join Date: Mar 2003
Location: Oregon.
Posts: 3,521
Default Re: no brakes!!

You should zip tie all vacuum lines and use t bolt clamps on intercooler hoses anyways to prevent boost leaks and keep hoses from popping off under high boost. This should have been done at the factory.
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Old 16 Sep 2007, 03:01 pm
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Join Date: Sep 2007
Location: northwest Arkansas
Posts: 21
Default Re: no brakes!!

Thanks guys. You were exactly right. The power brake booster hose came off the back of the intake manifold. There is a metal elbow that seems to have a tension fit into a boss cast at the back of the manifold. Is a zip tie the only way to keep the hose in place or is there another fix I'm not thinking of?

Race
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Old 18 Sep 2007, 06:26 am
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Default Re: no brakes!!

Quote:
Originally Posted by RaceWilson View Post
Is a zip tie the only way to keep the hose in place or is there another fix I'm not thinking of?
Race
Hose screw clamps. Lowes, Home Depot, auto stores all have them. I go for stainless ones.
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Old 14 Dec 2010, 07:11 pm
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Join Date: Dec 2010
Posts: 1
Cool Re: no brakes!!

Hey Guys, I am new here and I decided to join the forum after reading about this sticky situation on brakes. ....... The same thing happened to me today; I just gone done putting some anti-freeze in my 01 PT Cruiser and wham! I took off only to find my brakes would hardly move! I had to use two feet on my break pedal just to get the car to stop. My RPM's were running funny and I thought "crap, I just fixed my headlights and belts - now this???!!!!". So sure enough, sad that my little car was toubled, I turned to the net and googled "hard breaks pt cruiser" and found you guys. So I looked around the intake manifold and saw the hose was off, i put it on and started her up just fine

So, thanks guys, you saved me today. I have mechanic friends, but nothing feels better than getting it done yourself for free.
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Old 14 Dec 2010, 07:33 pm
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Default Re: no brakes!!

Welcome to the Forum MissApril, glad to hear you are a DIY'er. Hopefully you'll find a home here.
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Old 14 Dec 2010, 08:43 pm
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Join Date: Sep 2001
Posts: 27,744
Default Re: no brakes!!

I watched as you logged into the forum and saw that you were cruising through the "no brakes" thread wondering what kind of problem you were having. Glad yo read through the answers and found an answer. Is IS good to know that you fixed something that could have cost loads at the dealer. Don't forget us if something else pops up or join in the other threads that aren't about fixing something. Lots of nice people here.
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