C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Anti-Lock Brake Problem

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Old Jul 14, 2008 | 09:13 PM
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Default Anti-Lock Brake Problem

The other day, my anti-lock light came on and I have no idea why. The brakes feel fine. Anyone have this happen or know anything about it? Its a stock 87 with the 4+3.
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Old Jul 14, 2008 | 10:21 PM
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Could be one of the following: abs computer, wheel sensor, abs relays, wiring problem, low fluid, etc. ABS parts are fun to track down. IF you can find an old tech with an ABS diagnostic tool - you're golden. Helms manual and or supplemental ABS troubleshooter guide will help
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Old Jul 15, 2008 | 12:34 AM
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Call all the local Chevy dealers and see if they still have a C4 ABS tester, it will find the reason your abs light is on!
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Old Jul 15, 2008 | 08:25 AM
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I had the same problem in the past. I added some brake fluid and the problem gone...
-Beppe-
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Old Jul 16, 2008 | 08:18 AM
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http://members.shaw.ca/dankai/ABS%20Electrical.pdf
http://members.shaw.ca/dankai/ABS.pdf
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Old Jul 16, 2008 | 03:39 PM
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Default Anti Lock Brake

My left rear wheel sensor was damaged when the rear wheel bearing went bad. I replaced the sensor and the system was back up. My sensor had worn through on the end. It was obvious when I compared it to a good sensor.

Larry
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Old Jul 16, 2008 | 08:30 PM
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Originally Posted by jfb
Call all the local Chevy dealers and see if they still have a C4 ABS tester, it will find the reason your abs light is on!
ack, dealers want coin. the break out boxes you need to test the pre 1990 abs systems are on ebay for $50-100 frequently. one of many reasons can cause this to come on. sensors and failed ebcms are the most common reasons. if you have a dead abs pump do let me know as i have a working spare in my garage.
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