C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Aug 15, 2009 | 03:58 PM
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My car 85 C4 pulls to the left when I brake, I have replace both calipers and the Master twice! I blew out the steel lines, and replaced the rubber lines between the steel line and the caliper, Im so ill with this car! Please give me advise....
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Old Aug 15, 2009 | 08:21 PM
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Is there any thing worn or loose in the suspension or steering.
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Old Aug 15, 2009 | 08:31 PM
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hows the rotor also check tire psi, are the pads the same on both wheels?
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Old Aug 15, 2009 | 09:50 PM
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Originally Posted by Paul Ruggeri
Is there any thing worn or loose in the suspension or steering.

Replaced the entire Front Suspemsion, Ball joints tie rods, ect
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Old Aug 15, 2009 | 09:51 PM
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Originally Posted by kimmer
hows the rotor also check tire psi, are the pads the same on both wheels?
New tires, I rotated front to back, New pads and rotors
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Old Aug 15, 2009 | 10:01 PM
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Do not discard the rear brakes. Inspect them and get back with us.
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Old Aug 15, 2009 | 10:12 PM
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Originally Posted by PLRX
Do not discard the rear brakes. Inspect them and get back with us.
PLRX, I bled them and checked them today, I have not replaced the Calipers, altho they seem to cause no prblems When Driving the Car, If I stab the brakes only the front left will lock up, If i gravity feed the lines the left Front has the greatest amount of free flow, But it is closet to the master cylinder, It almost flow constant, whereas the right caliper drips Fast, Both of the rears drip slowly.
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Old Aug 21, 2009 | 02:16 PM
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Well I was hopeing for more input, I would assume no one has had this problem, I dont think it is the rear brakes. The steering wheel as well as the nose of the car pulls to the left on hard braking..., I have replaced the entire brake system, and front end componets...... I got a 1985 lemon, Who Knew....
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Old Aug 21, 2009 | 07:07 PM
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Don't give up yet.

I had a Mustang that did this, it wasn't until I replaced and greased the slide pins that the calipers would work correctly.

Also check for caliper spread, even rebuilt calipers could have it!
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Old Aug 21, 2009 | 08:01 PM
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check your cars toe camber and caster also, have it balanced out!
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Old Aug 23, 2009 | 02:00 PM
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Originally Posted by jaa1992
Don't give up yet.

I had a Mustang that did this, it wasn't until I replaced and greased the slide pins that the calipers would work correctly.

Also check for caliper spread, even rebuilt calipers could have it!
Im ready to try anything, should i pull the caliper pins and re-grease them? they are new as well
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Old Aug 23, 2009 | 02:01 PM
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Originally Posted by djirok
check your cars toe camber and caster also, have it balanced out!

I dont understand, the aligment shop said it aligned perfect. I had replaced all of the front end parts.
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Old Aug 23, 2009 | 02:01 PM
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Originally Posted by jaa1992
Don't give up yet.

I had a Mustang that did this, it wasn't until I replaced and greased the slide pins that the calipers would work correctly.

Also check for caliper spread, even rebuilt calipers could have it!



what is caliper spread?
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Old Aug 23, 2009 | 08:32 PM
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I am not to sure on a vette, as I am a new vette owner, But is it possible it could be the portioning valve? Just trying to help..

Ant...
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Old Aug 23, 2009 | 08:50 PM
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Perhaps some air in your ABS? As I recall this unit is difficult to bleed but there should be a procedure in the service manual for it. You may also want to try some panic stops on a loose surface.

BE CAREFUL! This whould be to exercise the ABS unit and maybe move any trapped air out. So you will have to bleed the calipers again.

It could be a dangerous thing to do, think twice about where you do it.

Matt
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Old Aug 23, 2009 | 09:25 PM
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Replace brake hose
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Old Aug 23, 2009 | 10:22 PM
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Yes,might be your brake hoses,and yes go for the panic stop tests as well.-
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Old Aug 24, 2009 | 05:55 AM
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Originally Posted by quickcat
Perhaps some air in your ABS? As I recall this unit is difficult to bleed but there should be a procedure in the service manual for it. You may also want to try some panic stops on a loose surface.

BE CAREFUL! This whould be to exercise the ABS unit and maybe move any trapped air out. So you will have to bleed the calipers again.

It could be a dangerous thing to do, think twice about where you do it.

Matt
No ABS on an '85. I agree with checking the hoses on the right front. Sometimes these hoses deteriorate from the inside.
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Old Aug 24, 2009 | 06:52 AM
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Originally Posted by Calderone
Yes,might be your brake hoses,and yes go for the panic stop tests as well.-
Thanks for the advice on the brake hoses and ABS,

The 1985 Does not have ABS, So that's out.... and I replaced both the steel hose to the rubber hose, and the small rubber hose from the steel to the calipers as well. I thought it was the rubber hoses as well. both good idea but that did not solve, thank you again. At leeast you guys tried.
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Old Aug 24, 2009 | 06:55 AM
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Originally Posted by ant-knee470
I am not to sure on a vette, as I am a new vette owner, But is it possible it could be the portioning valve? Just trying to help..

Ant...

Thanks Ant, The valve is a part of the master cyl, but works front to rear. i have also replace the master cly , twice with no change... I m so done with this car.... I dont even know what else to look for I replace the entire front of the car.... ( seems like)
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