99' Cobra ABS issues

99CobraAR · February 11th, 2010, 11:20 AM

When I first bought the car about month ago I noticed that the abs light was on and did a "test" to see if it was working and indeed it wasn't. So I did research and found out it is often the speed sensors on each wheel, so yesterday I found the time to get under the car and clean and inspect the the pickups and rings. I pulled the negative cable for 10+ minutes then said a prayer and fired it up. Much to my disappointment even though the car had not moved the the ABS light came on immediately and has stayed on after about 30 minutes of test driving to see if it would un-f#*k it's self. Anyone else have this problem or no why it would come on instantly after resetting the computer and stay on?

Thanks for your help in advance.

wraitherx · February 11th, 2010, 12:17 PM

you can test the sensors with a DMM (digital multi-meter). I would check the connections and make sure that they havent come loose or something. Other then that IIRC the ABS system works differently then the SES codes. ABS codes are stored until they are physically erased by and ABS reader or the problem fixed.

99CobraAR · February 11th, 2010, 12:51 PM

Originally Posted by wraitherx

you can test the sensors with a DMM (digital multi-meter). I would check the connections and make sure that they havent come loose or something. Other then that IIRC the ABS system works differently then the SES codes. ABS codes are stored until they are physically erased by and ABS reader or the problem fixed.

What is the procedure for testing the sensors with the DMM? I assume I will be looking for a voltage output, is there a certain voltage in relation to the turning of the wheel that I should look for?

wraitherx · February 11th, 2010, 01:04 PM

i can find out for you. you will also need to check the resistance between the pins on the harness to make sure that they are within range.

99CobraAR · February 11th, 2010, 01:52 PM

Originally Posted by wraitherx

i can find out for you. you will also need to check the resistance between the pins on the harness to make sure that they are within range.

Thanks for the help.

wraitherx · February 11th, 2010, 02:15 PM

no problem

February 11th, 2010, 11:20 AM	#1
99CobraAR Regular 1999 Mustang Cobra Join Date: Jan 2010 Location: South West AR Posts: 53 iTrader: 0 reviews	99' Cobra ABS issues When I first bought the car about month ago I noticed that the abs light was on and did a "test" to see if it was working and indeed it wasn't. So I did research and found out it is often the speed sensors on each wheel, so yesterday I found the time to get under the car and clean and inspect the the pickups and rings. I pulled the negative cable for 10+ minutes then said a prayer and fired it up. Much to my disappointment even though the car had not moved the the ABS light came on immediately and has stayed on after about 30 minutes of test driving to see if it would un-f#*k it's self. Anyone else have this problem or no why it would come on instantly after resetting the computer and stay on? Thanks for your help in advance. __________________ MM CC Member #68

February 11th, 2010, 12:17 PM	#2
wraitherx Moderator '99 SVT Cobra Join Date: Nov 2006 Location: Virginia Beach, VA Posts: 9,568 iTrader: 11 reviews	you can test the sensors with a DMM (digital multi-meter). I would check the connections and make sure that they havent come loose or something. Other then that IIRC the ABS system works differently then the SES codes. ABS codes are stored until they are physically erased by and ABS reader or the problem fixed. __________________ BUILD 2 IN PROGRESS

February 11th, 2010, 01:04 PM	#4
wraitherx Moderator '99 SVT Cobra Join Date: Nov 2006 Location: Virginia Beach, VA Posts: 9,568 iTrader: 11 reviews	i can find out for you. you will also need to check the resistance between the pins on the harness to make sure that they are within range. __________________ BUILD 2 IN PROGRESS

February 11th, 2010, 02:15 PM	#6
wraitherx Moderator '99 SVT Cobra Join Date: Nov 2006 Location: Virginia Beach, VA Posts: 9,568 iTrader: 11 reviews	no problem __________________ BUILD 2 IN PROGRESS

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