My bro's car, T reg Ghia, has this mysterious ABS fault the local 
garage can't fix, and the Ford dealers want to stick on this test rig 
or sth at great expense.....

He says "Problem is that abs light remains unlit but I can feel abs 
rumbling under the brake pedal when braking. This happens intermitedley 
in journeys and it sometimes is then followed by the abs warning lights 
coming on. Once i stop the  the car and start the engine again the abs 
light will not be on. It has just got it 12 months MOT ticket."

Light comes on correctly with key for system check.

Is this a known fault? Fixable?

Thanks

Steve

>> My bro's car, T reg Ghia, has this mysterious ABS fault the local
>> garage can't fix, and the Ford dealers want to stick on this test rig
>> or sth at great expense.....
>>
>> He says "  Problem is that abs light remains unlit but I can feel abs
>> rumbling under the brake pedal when braking. This happens intermitedley
>> in journeys and it sometimes is then followed by the abs warning lights
>> coming on. Once i stop the  the car and start the engine again the abs
>> light will not be on. It has just got it 12 months MOT ticket."
>>
>> Light comes on correctly with key for system check.
>>
>> Is this a known fault? Fixable?
>
> That sounds like a wheel sensor starting to fail. If you unplug each in
> turn and put a AC Volts digital test meter on, spin the wheel (by hand)
> and get a reading. You should be able to get about 1v, anything much
> less than 0.7v would indicate a weak sensor.



Indeed.  My 820 is doing the same thing and I managed to get the fault code 
indicating front RH wheel sensor (it's usually the front wheels).  During 
normal use it doesn't cause any problems, but when it gets damp or hot under 
that wheel arch it triggers the fault...

Darren

In message <2005071821423350073%stek1961NO@SPAMmaccom>, Steve 
 writes

>My bro's car, T reg Ghia, has this mysterious ABS fault the local 
>garage can't fix, and the Ford dealers want to stick on this test rig 
>or sth at great expense.....
>
>He says "Problem is that abs light remains unlit but I can feel abs 
>rumbling under the brake pedal when braking. This happens intermitedley 
>in journeys and it sometimes is then followed by the abs warning lights 
>coming on. Once i stop the  the car and start the engine again the abs 
>light will not be on. It has just got it 12 months MOT ticket."
>
>Light comes on correctly with key for system check.
>
>Is this a known fault? Fixable?
>

I wouldn't say its a known fault. Has the car had any work done near the 
wheel hubs recently, i.e wheel bearing change or new brake shoes? The 
ABS wheel sensors can get damaged quite easily.

-- 
Paul Giverin

British Jet Engine Website    http://www.britjet.co.uk

On Mon, 18 Jul 2005 21:42:33 +0100, Steve 
wrote:


>My bro's car, T reg Ghia, has this mysterious ABS fault the local 
>garage can't fix, and the Ford dealers want to stick on this test rig 
>or sth at great expense.....
>
>He says "Problem is that abs light remains unlit but I can feel abs 
>rumbling under the brake pedal when braking. This happens intermitedley 
>in journeys and it sometimes is then followed by the abs warning lights 
>coming on. Once i stop the  the car and start the engine again the abs 
>light will not be on. It has just got it 12 months MOT ticket."
>
>Light comes on correctly with key for system check.
>
>Is this a known fault? Fixable?



Yes and yes. Happened to me. Twas a sensor problem associated with a
wheel bearing worn to destruction. 
-- 
R
o
o
n
e
y

"I always knew the entire Green party were nutters" - Ken Livingstone

On Mon, 18 Jul 2005 22:53:05 +0100, Paul Rooney 
wrote:



>Yes and yes. Happened to me. Twas a sensor problem associated with a
>wheel bearing worn to destruction. 


(PS - Focus Diesel estate, V reg, 108000 miles, iirc. That was the
first problem I'd had with it).
-- 
R
o
o
n
e
y

"I always knew the entire Green party were nutters" - Ken Livingstone