C-4 Calipers Sticking

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Mar 29, 2009 | 05:50 PM

DDJJ

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6th Gear

Joined: May 2007

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C-4 Calipers Sticking

Has anyone had problems with both the front Calipers sticking? Within 5-10 minutes they release.

If you have what did you do to correct the problem.

Mar 30, 2009 | 04:13 PM

IRAraid

Racer

Joined: Jun 2006

Posts: 408

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From: Elkton MD

Sticking calipers

As a diagnostic, lift the car onto jack stands, press hard on the brakes then try to spin the wheel. If it's 'stuck' open the brake bleeder screw then try to spin the wheel. If it frees up quickly, the brake hose is bad. If it remains 'stuck' when the bleeder is opened, the caliper is shot.
Never had this on my Corvette but several other GM cars/trucks had the problem.
Hope this helps.

Mar 30, 2009 | 04:18 PM

Demonic85

Team Owner

Joined: Feb 2006

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From: sw Ohio

If the caliper isnt working and you've done raid's test, its cheap and relatively easy to just rebuild the caliper itself.

Mar 30, 2009 | 04:24 PM

Kubs

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From: Akron Ohio

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I have had this problem before on another car. When the hose gets old it will tend to collapse on itself and act like a check valve. It will let fluid in to the caliper to brake but does not let the fluid back out to to release the caliper.

Mar 30, 2009 | 04:53 PM

USAsOnlyWay

Le Mans Master

Joined: Dec 2002

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From: Seattle Area WA

Quote:

Originally Posted by Kubs

I've seen it before too, not specifically on C4s but...

Mar 30, 2009 | 05:00 PM

383vett

Race Director

Joined: Apr 2003

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From: moraga ca

Wait a minute. I thought the op said both front calipers were sticking. What are the odds that both front hoses collapse at the same time. Seems like a master cylinder to me (or abs system if he has one).

Mar 30, 2009 | 09:53 PM

onebighitter

Racer

Joined: Feb 2004

Posts: 251

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From: De Pere WI

It seems like corrosion biuld up on caliper slides to me. Take caliper slides out and clean them. Parts $0 labor hour or so. That is what I would try, happens on import vehicles alot