1998 Volvo S40 ABS light, Noise while breaking and sometime

1998 VOLVO S40
99,400 MILES • 4 CYL • FWD • AUTOMATIC
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MATKELLIE1
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Hullo experts,
My name is Mathias, Got my driving shafts replaced with used ones but after then had my ABS warning light sometimes on right after self diagnostics and at times off but comes up a few minutes later. When I attept to break, the ABS kicks out so much that the pedal hardens, feels shaky and makes a sharply-groaning noise and the car stop unless you exert alot of pressure or release the pedal abit and press it again. It is so funny that this happens at loww speeds.
May 11, 2010 at 3:00 PM
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RASMATAZ
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Check the wheel sensors and the ABS unit
May 11, 2010 at 4:05 PM
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MATKELLIE1
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[quote:f85c28375e="rasmataz"]Check the wheel sensors and the ABS unit[/quote:f85c28375e]

Thanks rasmataz for the quick reply,
Please offer some details. What should I be checking out for on the stated components?

It is so unfortunate that cant find computer error diagnostic where I live (Uganda - East Africa) and so have to rely on experienced people like you for guidance.
Thanks in advance.
May 11, 2010 at 4:49 PM
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RASMATAZ
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You replaced the driveshafts -check the wheel speed sensor, signal wire and sensor ring on each side.
May 11, 2010 at 6:07 PM