1992 Lincoln Town Car ABS Pulsing

Tiny
LUXURYSPORT
  • MEMBER
  • 1992 LINCOLN TOWN CAR
  • V8
  • 2WD
  • AUTOMATIC
  • 121,000 MILES
Under normal driving conditions, the anti-lock pulses the brake pedal. At speeds of 20mph or below the front brakes pulse like crazy, as if I was sliding in snow.

Codes were ran several years ago just when the ANTI-LOCK light just turned on but there was no pulsing. The codes were 10, 33, 63

Please recommend what I should do next, because the braking is somewhat hard to control now, as the pulsing is erratic at slow speeds.

Thanks,
David


http://www.2carpros.com/forum/automotive_pictures/267565_S5002060_1.jpg

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Sunday, April 26th, 2009 AT 7:50 PM

1 Reply

Tiny
MERLIN2021
  • EXPERT
First you need to re read the codes as ABS has no code 10! Starts with 11 but 33 is right rear speed sensor, test that first and let me know what you find.
Codes 33, 37, 43, 57, 73, Or 77 Turn ignition off. Unplug 55-pin connector from ECU. Connect breakout box and adapter. Measure resistance between breakout box pins No. 27 and No. 45. If resistance is 800-1400 ohms, go to step 17). If resistance is not 800-1400 ohms, go to next step. 15. Unplug right rear wheel sensor connector. Measure resistance between sensor terminals. If resistance is 800-1400 ohms, repair circuit No. 523 (Red/Pink wire) or No. 524 (Pink/Black wire). If resistance is not 800-1400 ohms, replace wheel sensor. 16. Turn ignition off. Turn off air suspension switch (if equipped). Raise and support vehicle. Spin right rear wheel at approximately one revolution per second. Measure voltage between breakout box pins No. 27 and No. 45. If voltage is.10-1.40 volts AC, go to step 18). If voltage is not.10- 1.40 volts AC, check sensor mounting, sensor air gap, or toothed ring for damage, wear, or misalignment. Repair as necessary. 17. Check for continuity between breakout box pins No. 27 and No. 60. If no continuity exists, go to step 20). If continuity exists, go to next step. 18. Unplug right rear wheel sensor connector. Check for continuity between each wheel sensor connector terminal and ground. If continuity exists at either terminal, replace wheel sensor. If no continuity exists at either terminal, repair circuit No. 523 (Red/Pink wire) or No. 524 (Pink/Black wire). 19. Check for continuity between breakout box pin No. 60 and ground. If continuity exists, go to step 21). If continuity does not exist, repair circuit No. 57 (Black wire). 20. Check differential housing and rear wheel bearings for excessive play. Inspect for damaged teeth on sensor ring. Service as necessary. If no problems exist, verify codes. 21.
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Sunday, May 3rd, 2009 AT 8:38 AM

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