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2001 Grand Am brake light stays on
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Anonymous Poster
Jul 5, 2008, 9:23 AM
Post #1 of 4
(3193 views)
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2001 Grand Am brake light stays on
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Hello:
I've got a 2001 Grand AM 4 cyl. About a week ago the brake light all of a sudden came on while I was driving it. The brake pedal felt a little squishy but nonethless I was able to drive it home. I've since bench bled the master cylinder, installed it; bled the two brake line connected to the cylinder; bled the two brake lines going to the ABS unit, and bled all four calipers in the order specified in the Haynes manual. This car has disc brakes in the front and drum brakes in the back. However, the light is still on and the brake pedal still goes to the floor. My dad said it's probably my master cylinder but everyone else I've talked to says that I have air in the system. I did replace the front disc brake pads about a month and a half ago but that didn't require me to do any bleeding as all I had to do was push the pistons back with a C clamp and then install the pads. Can someone help me please? Also is it possible this may be caused by the ABS unit? Believe the one that's on my car is the Delphi DBC-7.
Thanks.
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Guest
Anonymous Poster
Jul 5, 2008, 11:05 AM
Post #2 of 4
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Re: 2001 Grand Am brake light stays on
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look for signs of leakage at the back of the master cylinder, and every inch of the brak line under neath the car, also inspect the wheel cylinders and the calipers. If all are free of visible leaks, then I would suspect the master cylkinder, the kissue could be that the seals on the primary or secondary pistons rae rolled or worn and are not holding pressure
Yes air casues a spongy pedal but often not falling to the floor, this is more like a pressure issue.
Do you have ABS? Does the amber ABS light come on?
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Guest
Anonymous Poster
Jul 5, 2008, 5:40 PM
Post #3 of 4
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Re: 2001 Grand Am brake light stays on
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Yep have ABS but the ABS light doesn't come on. I checked to see if the master cylinder was leaking fluid into the brake booster but no dice. I'm thinking it might be a bad master cylinder or the sensor that sits on there. In terms of the pedal going to the floor, after I bled everything I possibly could it seems to be fine.
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flgmtech1
User
Jul 6, 2008, 12:08 PM
Post #4 of 4
(3178 views)
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Re: 2001 Grand Am brake light stays on
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if the pedal feels fine and the reds light BRAKE Light is still on, unplug the sensor at the master, does it now go out?...... if it DOES NOT go out, go down to the Emergency brake pedal and unplug the E-Brake pedal connector, if it now goes out, then check the E-Brake pedal adjuster, is it all the way up? Or are the contacts bad? Is it not conatacting the switch to shut the light off??
If the light wen out when you unplugged the master cylinder, the sensor can be replaced with out replacing the master cylinder. It plugs into the bottom and no fluid will come out when you remove it.
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