Brake warning lamp question
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New User
Joined: Nov 2003
Posts: 19
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Brake warning lamp question
hi
I have a 1990 f350 4x4 with a 7.3 diesel.
The brake warnign lamp comes on while driving and stays on.
I just replaced the front calipers, pads and rotors, bled the brakes with fresh Dot 3/4 fluid, checked the e-brake switch and it's fine.
any ideas?? I don't think it's the vacuum pump as the truck stops on a dime with NO pedal fade.
I'm thinking it's the little float/switch combo in the fluid reservoir.
any other ideas??
thanks
I have a 1990 f350 4x4 with a 7.3 diesel.
The brake warnign lamp comes on while driving and stays on.
I just replaced the front calipers, pads and rotors, bled the brakes with fresh Dot 3/4 fluid, checked the e-brake switch and it's fine.
any ideas?? I don't think it's the vacuum pump as the truck stops on a dime with NO pedal fade.
I'm thinking it's the little float/switch combo in the fluid reservoir.
any other ideas??
thanks
Posting Guru
Joined: Apr 2003
Posts: 1,153
Likes: 1
From: Venezuela
There are 2 brake lamps, one is for service brake and other issues and there is one extra use for ABS system, not used on your truck I guess.
The firts one comes one:
1º Service brake applied
2º Low fluid level
3º While cranking (To check Lamp)
4º If low vacumm is detected (Diesel models)
The other one comes on
1º ABS system failure (Could be electronic and/or hidraulic problem)
Regards;
Note: Both lamps comes on just by grounding its wire, so if this wire is having an insulation problem, the lamp can tilt any moment while engine is on.
The firts one comes one:
1º Service brake applied
2º Low fluid level
3º While cranking (To check Lamp)
4º If low vacumm is detected (Diesel models)
The other one comes on
1º ABS system failure (Could be electronic and/or hidraulic problem)
Regards;
Note: Both lamps comes on just by grounding its wire, so if this wire is having an insulation problem, the lamp can tilt any moment while engine is on.
