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1994 Buick Park Avenue ABS

Tiny
LANKYLIN
  • MEMBER
  • 1994 BUICK PARK AVENUE
  • FWD
  • AUTOMATIC
  • 135,000 MILES
Brakes locked up all wheels. Disconnected the ABS Controller and the fuse for it. Drove it across Colorado w/no problems *drove cautiously." Replaced the ABS controller and it locked up again almost immediately. Disconnected it, let car cool and drove home. Did it again with controller disconnected. Had new brakes installed. Drove it again and locked up in hot weather. Mechanic released the brakes for me and drove home. What could be causing this? I have to transport vehicle across Colorado again and I don't have the money to buy a Pressure Modulator Motor. How do I keep it from locking up just to get it moved across the state so I can wait until I have enough money to have it fixed.
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Monday, July 21st, 2014 AT 7:07 PM

12 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
This cold be the hoses going to calipers in front and or the abs unit. If it's ok unplugged drive it like that. But it should be scanned to see what the problem is. Abs unit s should be replaced as a whole not only motor
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Tuesday, July 22nd, 2014 AT 5:35 AM
Tiny
LANKYLIN
  • MEMBER
  • 7 POSTS
I know the Pressure modulator is a complete unit with the motor, etc. I also know that on some vehicles the ABS controller is part of that unit. This one is separate. That's why I know it's not the controller. I don't know how to disconnect the pressure modulator.
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Friday, July 25th, 2014 AT 12:04 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Reove lines andmark them then electrical and then remove bracket to disassemble see pics.
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Friday, July 25th, 2014 AT 12:18 PM
Tiny
LANKYLIN
  • MEMBER
  • 7 POSTS
Thanks for your help. Do I need to plug the brake lines? Will I lose my brake fluid when unplug them? Could I just unplug everything for now and leave it in place?
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Friday, July 25th, 2014 AT 12:24 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Read theinstructions I sent and yes you'll need to plug the lines and rebled the system
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Friday, July 25th, 2014 AT 12:25 PM
Tiny
LANKYLIN
  • MEMBER
  • 7 POSTS
What would happen if I just nplug the electrical lines to the modulator and drive it like that (temporarily)
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Friday, July 25th, 2014 AT 12:30 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
You won't have abs that's all your brakes will still work just no anti lock
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Friday, July 25th, 2014 AT 12:31 PM
Tiny
LANKYLIN
  • MEMBER
  • 7 POSTS
You have been a tremendous help. Do you think the wheels will still want to lock up if that is disconnected?
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Friday, July 25th, 2014 AT 12:33 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
I really can't say but you said that when you unplug it it doesn't so I'm only goin gby that I can't see it.
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Friday, July 25th, 2014 AT 12:35 PM
Tiny
LANKYLIN
  • MEMBER
  • 7 POSTS
No, I only unplugged the controller. It did lock up when the engine block got hotter (warm day) with the controller unplugged.
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Friday, July 25th, 2014 AT 12:36 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
I suggest you have a pro look at this I have no further comments
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Friday, July 25th, 2014 AT 12:38 PM
Tiny
LANKYLIN
  • MEMBER
  • 7 POSTS
Thank you for your help
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Friday, July 25th, 2014 AT 12:39 PM

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