Question about 1998 Pontiac Sunfire

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Replaced brakelines know pedal goes to floor

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  • Robert Veldman
    Robert Veldman Apr 08, 2011

    Did you "bleed" the brake lines to get the air out out of the lines?



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There may still be air in the brake lines. Follow proper brake bleeding procedure by starting to bleed the right-rear, then left-rear, then right-front, and finally left-front wheel. Please tell the person inside the car not to "floor" the brake pedal as this can damage the master cylinder seals. Depress the pedal no more than halfway down (about 2-3 inches of travel) . Always coordinate with each other: Example --- not to release the brake pedal until you have closed the bleeder screw. Use a clear hose (a fishtank hose works just fine) attached to the bleeder screw to have a visual confirmation that there are no longer any bubbles left. Keep an eye on the master cylinder reservoir and top up as needed.

I hope this helps.

Have a great day !!!

Posted on Apr 08, 2011

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You either have a leak in the the system or your master cylinder is bad and allowing the pedal to push through the cylinder without bulding pressure. Check all the wheels for signs of a leak, if none and the brake fluid resivoir is full then the master cylinder on the back of the firewall is bad. These can be rebuilt very cheaply and you can do this yourself with parts from the parts store.

Posted on Apr 08, 2011

  • Dcramer531
    Dcramer531 Apr 08, 2011

    If you didn't bleed the system that would make the pedal hard to push because of air in the system. But that still needs done if you haven't done it and if you need help with that let me know.



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