:mad I've had it with my 87 Coupe's ABS System. The mechanic checked everything, including the speed sensors and the car still locks the right front caliper :smash: He suspects that there is a valve stuck in the ABS unit. The unit costs $1913.00 :( and I am not going to replace it. I know that the 1985 Corvette is very similar but it has no ABS system. :yesnod: Can 1985 brake lines be installed in an 87 Coupe? By the way, the ABS light only goes on during start up. Any ideas. I would rather spend the money in performance items. :lol: :lol: :lol:

 

If i remember correctly can't you just replace the pilot valve? Better yet find one at a salvage yard for near dirt costs for parts or replacement. These units don't fail often because of intest safety considerations. That's what I'd do. Call vette masters in VA 17573407118 and ask for Tom or Rich and tell them Chris Bertrand sent you, they'll give you a great deal. I gain NOTHING for the referral, I only recommend them because they are the ones I got my parts for the entire LTPWS and FX3 ride control systems and am VERY satisfied with the service (see signature). Good luck

Kitt

 

:cry Do you know where is the pilot valve located? :smash: It will be helpful to know where it is. Thank you for your help, kittmaster. :confused: :eek:

 

I have had a problem with my 87's ABS where the pedal would pulsate for a couple of seconds, then get hard, then soft, then the Anti lock light would come on telling me that ABS is off and I am now on regular brakes. Because I was told the unit was expensive to replace, I just disconnected it. I have been on regular brakes for over 3 years now. Course, it would be nice to have it back if I could find a less expensive way.

 

I'm not a pro on an 87, but i believe it is in the cabin storage behind the drivers seat. Is should be part of the abs module......but honestly I'm not sure.....i have a 93 thats abs/asr which is a totally different unit. Did you try to call that number I gave you to see what they had to say?

kitt

 

beachcat,

What you describe is quite often due to a bad or dirty sensor ($0 to clean, $60 to replace). The pulsating is the system doing a test activation. The pedal goes hard while the pump is activating to test the system. If the system test fails the ABS light gets set. If the modulator valve and pump assembly system passes its test but the sensor readings fail, the ABS drops out and sets the light. So it could be just a sensor that is reading in error. A lot of Dealers will not go to the expense of buying an ABS tester. They just recommend replacing the controller at $900+. Major money maker for them.

Send me an email and I'll send you extensive tips on testing your 87 ABS system. The easiest and cheapest test is to look at each sensor where it is held in the wheel knuckle by a single 10mm screw. Take it out and make sure it isn't covered with dirt and crud. The sensors are very strong magnets and are subject to attracting lots of metal flakes and dirt. After a while they crud up so much it throws the induced sensor voltage off which causes the ABS controller to see a fault and set the ABS light. You can clean the sensor ends with WD-40. Be sure to use a slight bit of anti-seize on them when you reinstall as the sensors are steel ans the wheel knuckles are aluminum. A lot of times this simple cleaning of all 4 sensors will solve the ABS problem you report.

-Mike

 

Thanks for the tip.
You've got mail. :cheers: