 Brake pedal sticking |
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| zonedoubt |
 Sep 16 2008, 01:25 PM
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#1
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Canadian Member  Group: Members Posts: 668 Joined: 14-May 03 From: Vancouver, BC Member No.: 696 Region Association: Canada  |
I was on test drive the other day after the car was sitting for about 4 months (during the engine drop/replace fuel injection process).
I found the brake pedal was sticking, brakes lightly dragging, and often had to pull the pedal out with my foot. Pedal cluster rebuild time? Or is it more likely something else? |
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| TravisNeff |
Sep 16 2008, 01:28 PM
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#2
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region 
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I'd start with the pedal cluster.
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| McMark |
Sep 16 2008, 01:53 PM
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#3
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
(IMG:style_emoticons/default/agree.gif) The brake pedal should return regardless of anything else. There is a large spring in the pedal cluster that pulls it back. Rebuild time!
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| McMark |
Sep 16 2008, 01:53 PM
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#4
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
(IMG:style_emoticons/default/agree.gif) The brake pedal should return regardless of anything else. There is a large spring in the pedal cluster that pulls it back. Rebuild time!
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| ConeDodger |
Sep 16 2008, 02:13 PM
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#5
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Apex killer! Group: Members Posts: 23,586 Joined: 31-December 04 From: Tahoe Area Member No.: 3,380 Region Association: Northern California
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So true Mark said it twice... (IMG:style_emoticons/default/biggrin.gif)
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| zonedoubt |
Sep 16 2008, 05:00 PM
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#6
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Canadian Member Group: Members Posts: 668 Joined: 14-May 03 From: Vancouver, BC Member No.: 696 Region Association: Canada |
Thanks, that's where I'll start. A rebuild kit & springs is on my shopping list.
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| Dave_Darling |
Sep 16 2008, 09:20 PM
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#7
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914 Idiot Group: Members Posts: 14,985 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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The bushings are likely sticking, which doesn't let the pedal return. Rebuild the cluster.
The bushings are probably sticking because brake fluid got on them. Replace the master cylinder. Also wash the area under the pedal cluster, as brake fluid eats paint after a while... --DD |
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| brp986s |
Sep 16 2008, 10:16 PM
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#8
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Member Group: Members Posts: 434 Joined: 27-September 07 From: los angeles Member No.: 8,167 |
It is probably the pedal cluster, but I once had your symptom and it turned out the bushings were fine, but the plunger from the cluster into the m/c was bent slightly and getting wedged.
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| zonedoubt |
Sep 17 2008, 10:53 AM
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#9
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Canadian Member Group: Members Posts: 668 Joined: 14-May 03 From: Vancouver, BC Member No.: 696 Region Association: Canada |
I pulled the pedal board out last night and it didn't look like the master cylinder was leaking. But there is a lot of sludge around the pedals, could be a prior leak or from PO spraying down the pedals with lube or something.
The brake pedal spring in the cluster is definitely shot so I'll have to replace that. |
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| ConeDodger |
Sep 17 2008, 11:25 AM
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#10
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Apex killer! Group: Members Posts: 23,586 Joined: 31-December 04 From: Tahoe Area Member No.: 3,380 Region Association: Northern California
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The MC is often the cause of the problem... Unless it looks new or you have some other evidence it has been replaced I would do the MC at the same time... (IMG:style_emoticons/default/biggrin.gif)
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| zonedoubt |
Sep 19 2008, 01:10 AM
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#11
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Canadian Member Group: Members Posts: 668 Joined: 14-May 03 From: Vancouver, BC Member No.: 696 Region Association: Canada |
I took out the pedal cluster this evening. The paint in and around the cluster bracket was soft and peeling. There must've been an MC leak at some point. I scraped out the paint, wire wheeled, cleaned, and POR15'd.
One of the brake pedal plastic bushing was completely torn apart. The others weren't as bad but definitely need to be changed. A brass bushing kit is on the way. A new MC too since the one in there looks pretty old. I highly recommend that anyone who hasn't pulled out their pedal cluster do so to get a good look at the condition of the bushings and paint. Thanks to everyone on their input. |
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| Bartlett 914 |
Sep 19 2008, 06:59 AM
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#12
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Advanced Member Group: Members Posts: 2,216 Joined: 30-August 05 From: South Elgin IL Member No.: 4,707 Region Association: Upper MidWest |
Replied to the wrong thread..Sorry
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