Brake and abs lights appear. what's wrong?
#1
06-25-2010, 03:48 PM
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Brake and abs lights appear. what's wrong?
#2
06-26-2010, 03:29 AM
Perhaps repost this in the XJ40 area, that is the car you have.
I am going to give my best guess, others will definately come in with other ideas.
Anti-lock light, more that likely a wheel sensor not giving good contact, lose/unplugged/dirty contact.
The brake light on the dash may be the "bomb" going/gone flat, it is a service replacement item. It may also be the cause of the Anti-lock light, dunno.
I am going to give my best guess, others will definately come in with other ideas.
Anti-lock light, more that likely a wheel sensor not giving good contact, lose/unplugged/dirty contact.
The brake light on the dash may be the "bomb" going/gone flat, it is a service replacement item. It may also be the cause of the Anti-lock light, dunno.
#4
06-28-2010, 09:57 PM
Hate to tell you this but the worst thing about these cars are the brakes. Are your brakes still working or do you need to press excesively hard to stop?
To me it sounds like the brake accumulator ball has gone bad on the ABS pump asasembly. The Pump pumps a nitrogen filled ball (diaphragm) with brake fluid. This ball has a valve to let pressure out of the ball and into the brake system to gain power assist brakes. A lot of the times the accumulator ball goes bad and so anytime you press the brake the pump turns on for brakes or the pump runs excessively and burns itself out.
A check for this is to have the car running and listen to the abs pump assembly and see if the pump runs/clicks on and off when there is no brake use. Also have a friend press the brakes while you are watching. Does the pump run every time he presses the brakes?
It could also just be faulty ABS speed sensors, these cars are known for dirty brakes that clog the sensor easily. If the ABS pump seems to be doing fine I would clean up all of the sensors and see where that takes you.
To me it sounds like the brake accumulator ball has gone bad on the ABS pump asasembly. The Pump pumps a nitrogen filled ball (diaphragm) with brake fluid. This ball has a valve to let pressure out of the ball and into the brake system to gain power assist brakes. A lot of the times the accumulator ball goes bad and so anytime you press the brake the pump turns on for brakes or the pump runs excessively and burns itself out.
A check for this is to have the car running and listen to the abs pump assembly and see if the pump runs/clicks on and off when there is no brake use. Also have a friend press the brakes while you are watching. Does the pump run every time he presses the brakes?
It could also just be faulty ABS speed sensors, these cars are known for dirty brakes that clog the sensor easily. If the ABS pump seems to be doing fine I would clean up all of the sensors and see where that takes you.
#5
07-01-2010, 12:57 PM
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To me it sounds like the brake accumulator ball has gone bad on the ABS pump asasembly. The Pump pumps a nitrogen filled ball (diaphragm) with brake fluid. This ball has a valve to let pressure out of the ball and into the brake system to gain power assist brakes. A lot of the times the accumulator ball goes bad and so anytime you press the brake the pump turns on for brakes or the pump runs excessively and burns itself out.
A check for this is to have the car running and listen to the abs pump assembly and see if the pump runs/clicks on and off when there is no brake use. Also have a friend press the brakes while you are watching. Does the pump run every time he presses the brakes?
A check for this is to have the car running and listen to the abs pump assembly and see if the pump runs/clicks on and off when there is no brake use. Also have a friend press the brakes while you are watching. Does the pump run every time he presses the brakes?
#7
07-08-2010, 07:39 PM
The BRAKE light on the dash of my 1990 XJ6 Sovereign used to come on whenever I pressed on the brake pedal. It was that way when I bought it about 2 months ago and I thought it was supposed to. I read through the owners manual and realized that it was telling me that I needed brakes. I went to replace the front pads and found that the left front brake sensor harness was missing. I bought a replacement harness for $21.00 and installed it. The BRAKE light switch immediately went off and has not been on since. 
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