I am hoping someone out there could help me out. when i would be braking,
just before stopping my brakes would grab and the abs would kick in. it
was quite a hard stop. after a few days of this the abs light came on and
is on steady. the problem went away but the abs light is still on. i am
assuming that with the abs light on, the unit is disabled. if anyone has
an idea what would cause the brakes to grab like that, it would be
appreciated.

 

There should be a fault code stored in the system. Bad or misaligned wheel
sensor maybe? Bad connection to the ABS computer.

oil
"bpb" <bpbeggan@nauticom.net> wrote in message
news:f99825b0f6b53447d8de99d9e4db4141@localhost.ta lkaboutautos.com...
>I am hoping someone out there could help me out. when i would be braking,
> just before stopping my brakes would grab and the abs would kick in. it
> was quite a hard stop. after a few days of this the abs light came on and
> is on steady. the problem went away but the abs light is still on. i am
> assuming that with the abs light on, the unit is disabled. if anyone has
> an idea what would cause the brakes to grab like that, it would be
> appreciated.
>

 

There should be a fault code stored in the system. Bad or misaligned wheel
sensor maybe? Bad connection to the ABS computer.

oil
"bpb" <bpbeggan@nauticom.net> wrote in message
news:f99825b0f6b53447d8de99d9e4db4141@localhost.ta lkaboutautos.com...
>I am hoping someone out there could help me out. when i would be braking,
> just before stopping my brakes would grab and the abs would kick in. it
> was quite a hard stop. after a few days of this the abs light came on and
> is on steady. the problem went away but the abs light is still on. i am
> assuming that with the abs light on, the unit is disabled. if anyone has
> an idea what would cause the brakes to grab like that, it would be
> appreciated.
>

 

There should be a fault code stored in the system. Bad or misaligned wheel
sensor maybe? Bad connection to the ABS computer.

oil
"bpb" <bpbeggan@nauticom.net> wrote in message
news:f99825b0f6b53447d8de99d9e4db4141@localhost.ta lkaboutautos.com...
>I am hoping someone out there could help me out. when i would be braking,
> just before stopping my brakes would grab and the abs would kick in. it
> was quite a hard stop. after a few days of this the abs light came on and
> is on steady. the problem went away but the abs light is still on. i am
> assuming that with the abs light on, the unit is disabled. if anyone has
> an idea what would cause the brakes to grab like that, it would be
> appreciated.
>

 

There should be a fault code stored in the system. Bad or misaligned wheel
sensor maybe? Bad connection to the ABS computer.

oil
"bpb" <bpbeggan@nauticom.net> wrote in message
news:f99825b0f6b53447d8de99d9e4db4141@localhost.ta lkaboutautos.com...
>I am hoping someone out there could help me out. when i would be braking,
> just before stopping my brakes would grab and the abs would kick in. it
> was quite a hard stop. after a few days of this the abs light came on and
> is on steady. the problem went away but the abs light is still on. i am
> assuming that with the abs light on, the unit is disabled. if anyone has
> an idea what would cause the brakes to grab like that, it would be
> appreciated.
>

 

bpb wrote:
> I am hoping someone out there could help me out. when i would be
> braking, just before stopping my brakes would grab and the abs would
> kick in. it was quite a hard stop. after a few days of this the abs
> light came on and is on steady. the problem went away but the abs
> light is still on. i am assuming that with the abs light on, the
> unit is disabled. if anyone has an idea what would cause the brakes
> to grab like that, it would be appreciated.

The ABS just before stop is due to one of two things.
1) failing ABS sensor (doesn't have to be failed, just marginal)
2) dirty ABS computer connector

2 usually shows as a failure as you go over a bump with or without
the brakes on.

First thing to do is to clean that connector.

---
Clean the connector on your ABS computer.
http://revbeergoggles.com/Fixes/computer-abs.jpg

Get a plastic bag, paper towel, a q-tip or ten, a zip tie
and some contact cleaner that's safe for plastic and a
bit of dilectric grease (sparkplug boot grease)

Disconnect the battery
Lift the latch and disconnect the harness
Take the airbox top and filter off. (this is your work sink)

Put the plastic bag in the airbox bottom, and some paper towels
now move the connector over the sink and open the shield, tap out
all the dirt and spray with cleaner (make sure it doesn't get on
the paint and if it does wipe it up pronto, it's like paint remover)

Clean the contacts on the ABS computer.

Put the shell back on and use the ziptie if the one on there broke.

Pack the dilectric grease into the connector and put it back on the
computer.

This fixes about 80% of all ABS light problems
---

If you still get the problem after this you have a couple of options.

First remove, clean, and put dilectric grease on the front sensor connections.
And if that fails your going to have to pay for an ABS diagnositcs to locate
the bad sensor (usually a front wheel unit) or replace them both at once.
There isn't a good way to check these things without the proper scantool.

--
-- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

 

bpb wrote:
> I am hoping someone out there could help me out. when i would be
> braking, just before stopping my brakes would grab and the abs would
> kick in. it was quite a hard stop. after a few days of this the abs
> light came on and is on steady. the problem went away but the abs
> light is still on. i am assuming that with the abs light on, the
> unit is disabled. if anyone has an idea what would cause the brakes
> to grab like that, it would be appreciated.

The ABS just before stop is due to one of two things.
1) failing ABS sensor (doesn't have to be failed, just marginal)
2) dirty ABS computer connector

2 usually shows as a failure as you go over a bump with or without
the brakes on.

First thing to do is to clean that connector.

---
Clean the connector on your ABS computer.
http://revbeergoggles.com/Fixes/computer-abs.jpg

Get a plastic bag, paper towel, a q-tip or ten, a zip tie
and some contact cleaner that's safe for plastic and a
bit of dilectric grease (sparkplug boot grease)

Disconnect the battery
Lift the latch and disconnect the harness
Take the airbox top and filter off. (this is your work sink)

Put the plastic bag in the airbox bottom, and some paper towels
now move the connector over the sink and open the shield, tap out
all the dirt and spray with cleaner (make sure it doesn't get on
the paint and if it does wipe it up pronto, it's like paint remover)

Clean the contacts on the ABS computer.

Put the shell back on and use the ziptie if the one on there broke.

Pack the dilectric grease into the connector and put it back on the
computer.

This fixes about 80% of all ABS light problems
---

If you still get the problem after this you have a couple of options.

First remove, clean, and put dilectric grease on the front sensor connections.
And if that fails your going to have to pay for an ABS diagnositcs to locate
the bad sensor (usually a front wheel unit) or replace them both at once.
There isn't a good way to check these things without the proper scantool.

--
-- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

 

bpb wrote:
> I am hoping someone out there could help me out. when i would be
> braking, just before stopping my brakes would grab and the abs would
> kick in. it was quite a hard stop. after a few days of this the abs
> light came on and is on steady. the problem went away but the abs
> light is still on. i am assuming that with the abs light on, the
> unit is disabled. if anyone has an idea what would cause the brakes
> to grab like that, it would be appreciated.

The ABS just before stop is due to one of two things.
1) failing ABS sensor (doesn't have to be failed, just marginal)
2) dirty ABS computer connector

2 usually shows as a failure as you go over a bump with or without
the brakes on.

First thing to do is to clean that connector.

---
Clean the connector on your ABS computer.
http://revbeergoggles.com/Fixes/computer-abs.jpg

Get a plastic bag, paper towel, a q-tip or ten, a zip tie
and some contact cleaner that's safe for plastic and a
bit of dilectric grease (sparkplug boot grease)

Disconnect the battery
Lift the latch and disconnect the harness
Take the airbox top and filter off. (this is your work sink)

Put the plastic bag in the airbox bottom, and some paper towels
now move the connector over the sink and open the shield, tap out
all the dirt and spray with cleaner (make sure it doesn't get on
the paint and if it does wipe it up pronto, it's like paint remover)

Clean the contacts on the ABS computer.

Put the shell back on and use the ziptie if the one on there broke.

Pack the dilectric grease into the connector and put it back on the
computer.

This fixes about 80% of all ABS light problems
---

If you still get the problem after this you have a couple of options.

First remove, clean, and put dilectric grease on the front sensor connections.
And if that fails your going to have to pay for an ABS diagnositcs to locate
the bad sensor (usually a front wheel unit) or replace them both at once.
There isn't a good way to check these things without the proper scantool.

--
-- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

 

bpb wrote:
> I am hoping someone out there could help me out. when i would be
> braking, just before stopping my brakes would grab and the abs would
> kick in. it was quite a hard stop. after a few days of this the abs
> light came on and is on steady. the problem went away but the abs
> light is still on. i am assuming that with the abs light on, the
> unit is disabled. if anyone has an idea what would cause the brakes
> to grab like that, it would be appreciated.

The ABS just before stop is due to one of two things.
1) failing ABS sensor (doesn't have to be failed, just marginal)
2) dirty ABS computer connector

2 usually shows as a failure as you go over a bump with or without
the brakes on.

First thing to do is to clean that connector.

---
Clean the connector on your ABS computer.
http://revbeergoggles.com/Fixes/computer-abs.jpg

Get a plastic bag, paper towel, a q-tip or ten, a zip tie
and some contact cleaner that's safe for plastic and a
bit of dilectric grease (sparkplug boot grease)

Disconnect the battery
Lift the latch and disconnect the harness
Take the airbox top and filter off. (this is your work sink)

Put the plastic bag in the airbox bottom, and some paper towels
now move the connector over the sink and open the shield, tap out
all the dirt and spray with cleaner (make sure it doesn't get on
the paint and if it does wipe it up pronto, it's like paint remover)

Clean the contacts on the ABS computer.

Put the shell back on and use the ziptie if the one on there broke.

Pack the dilectric grease into the connector and put it back on the
computer.

This fixes about 80% of all ABS light problems
---

If you still get the problem after this you have a couple of options.

First remove, clean, and put dilectric grease on the front sensor connections.
And if that fails your going to have to pay for an ABS diagnositcs to locate
the bad sensor (usually a front wheel unit) or replace them both at once.
There isn't a good way to check these things without the proper scantool.

--
-- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!