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

ABS Light

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Old Oct 15, 2007 | 02:59 AM
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Default ABS Light

Just picking up my new (actually it's a present for my wife) 87 vette on Monday.

I got a decent deal on it, but there is one issue I'd like to get taken care of before I give it to my wife on Sunday.

According to what I've been told, the ABS light came on, and has stayed on, since the PO had the brakes done.

If you look at the rotors and what-not it's obvious they were all recently replaced. The brakes seem to work very well, and I didn't hear any strange sounds or anything.

Sorry if this is a lame question... I know pretty much next-to-nothing about these cars.
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Old Oct 15, 2007 | 03:17 AM
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Top off brake fluid level.

Check "Brake", "Guages", "Stop/Haz", and "INJ 1" fuses

More:

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Old Oct 15, 2007 | 03:20 AM
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Cool thanks I'll look over the fuses and check the fluid.

It's pretty strange that having the brakes done would cause a fuse to go out... but the fluid could be very likely. Though the pedal didn't feel soft or anything.
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Old Oct 15, 2007 | 03:28 AM
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It could just be coincidence and have nothing to do with the brake job. Don't assume anything. Check the simple basic things first. It's all about eliminating the possibilities and narrowing it down to what it has to be. Agent's files should be all you need.

Also, take a look into the ABS compartment. Located behind driver's seat, under the carpet (under speaker on verts) in cargo area. On mine, I had an old waterline that submerged my ABS pump, relays, and computer. Don't know where the water came from, but it trashed everything. I scored a new unit on ebay for dirt cheap.

Finally, the ABS system on your car was designed in such a way, that even if the ABS is not working your normal braking is not affected. You can drive it without any problems, you just won't have ABS.

Anything else on the car not working? Some of the relays that power the ABS are tied into other elecrical systems too.
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Old Oct 15, 2007 | 04:12 AM
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I only took it for a short test drive. 3 or 4 miles down the highway, and back. Top speed of about 70 when I was sticking my foot in it.

The only other issues I noticed were:

A) drivers side seat doesn't tilt, it just clicks (but it moves back and forward just fine)
B) cruise didnt seem to work

Last edited by bthornton; Oct 15, 2007 at 04:16 AM.
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Old Oct 15, 2007 | 04:31 AM
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Seat is likely track mechanism.

Cruise does not share a fuse with ABS.

Most common cause is mis adjusted release switches venting all the time. That's where I would start.

How to adjust.

Manual:


Auto:


One is an electrical release, the other a vacuum release.

Dry rotted cruise vacuum lines under the hood and check valve near distributor base can also kill the cruise.



And of course there's the "Cruise" "LCD" and "CLST" fuses that feed the cruise circuit located in the fuse panel. Open the passenger door. It's on the side of the dash.

More:

http://www.corvettefever.com/howto/82001/
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Old Oct 15, 2007 | 04:35 AM
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Thanks!

I didn't think the cruise or seat were big issues. ABS brakes though can be a huge pain in the *** (from what I know)

So I thought I'd check here.

I finalize the sale tomorrow, but have already verbally committed, and setup the loan with the bank. I just have to pickup and deliver the check.
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Old Oct 15, 2007 | 04:37 AM
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This should be your first purchase if you plan on keeping this car for a while.

http://www.helminc.com/helm/product2...76AW7HN426FAM1
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Old Oct 15, 2007 | 04:40 AM
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Already planned on it. Thanks for the link though.

My actual first purchase was a high-end car cover (weathersheild)
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