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  #1 (permalink)  
Old May 22nd, 2014, 06:14 PM
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This might be an old subject for many of you, but as I've only had the car a week, it's all relatively new to me - more used to my old and my son's current Austin/Rover Mini's.

When I got the car, the above mentioned lights were on. This didn't really phase me as I have plans to buy an ABS/Airbag/EML diagnosis device. I've currently got an EML one from Machine Mart (Clarke branded) and it showed no stored or pending fault codes.

Have inflated tyres to 30 all round (fronts were 21 and 25psi and rears 15 and 19psi) and reset system via button under handbrake lever.

Now I have noticed that when I start the car, both lights are on. After about 3 seconds the tyre pressure light goes off. I drive away and after about 5-10 meters, the ABS light goes off as well. My road is about 100 meters long where I turn right and then another 40 meters where I hit a T-junction and slow to stop. I nearly always turn right due to horrible speed bumps if I go left.

When I slow down there is a brief 'hissing' noise which seems to come from the rear. I generally start to turn the steering wheel to the right as I approach the junction itself and then the ABS light illuminates closely followed by the tyre pressure light. They will stay on until I get to my destination and switch off the engine.

When I get back in, the same happens when the lights go out, but usually they don't come back on again, although I hit a pot hole and that made them come on again once.

My thoughts are poor connection on abs sensors to wiring loom, possible rear wheel bearing affecting sensor's ability to read the rotation of the wheel, lowering springs on rear, fitted by one of car's previous owners, making the rear wheels lean inwards and wearing inside edges of tyres.

Also have noticed steering wheel is about 10-15 degrees out to the left when driving in a straight line. Maybe not helping and I mean to get it looked at when funds allow.
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Old May 22nd, 2014, 06:42 PM
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Hi ya

What size wheel and tires are you running are they standard

It does sound like a bad connection or bad wire, I would check all of the sensor connections and wiring you may find a damaged wire.
If someone has been abit man handed when fitting the lowering springs they may have damaged the sensor wiring.

I would advice you to get a four wheel alignment carried out. If your steering wheel is not centred it will effect you steering angle sensor to.
All they need to do to correct this is centre the wheel and then adjust both track rod ends till the wheels are correct.

Depending on how it's been lowered you may need adjustable rear camber arm to bring the camber correct on the rear and adjustable top mounts.
If the suspension geometry is not set up right it you will end up with poor handling and bad tire wear.
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Old May 22nd, 2014, 07:05 PM
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I do not know if the alloys are standard for a 2002 Mini One.
The car has been 'Coopered' with white bonnet stripes. (removed as wife didn't like them)
The wheels are 7 spoke alloys wearing 195/55/16 tyres
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Old May 22nd, 2014, 08:25 PM
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Quote: Originally Posted by brigbeale (original)
I do not know if the alloys are standard for a 2002 Mini One.
The car has been 'Coopered' with white bonnet stripes. (removed as wife didn't like them)
The wheels are 7 spoke alloys wearing 195/55/16 tyres

Hi ya

Looks like a nice car :-) look like standard wheels
as a rough guide if you measure from the floor to the bottom of the plastic wheel arch trim going throw the center of the wheel if it around 630mm front and rear it's been lowered 20 to 30mm roughly
650mm ish is about standard

But I would get your camber and alignment sorted out

Hope this helps
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Old May 22nd, 2014, 08:35 PM
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in the few bits of paper in the service history, it would appear that somebody bought it off a used car dealer and must have had a problem with a front spring as it was replaced under the dealer's warranty. The other front spring, however, was replaced at the car owner's expense

But at least I've got two new front springs on it!!
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Old Jun 11th, 2014, 10:24 PM
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hi just joined this forum and been looking around and it seems the place to be if you own a mini right i got a cooper 2004 plate and my ABS and Tyre Pressure Lights have just started coming on randomly had a look around no wires damaged as i can see
but have noticed my rear bush on my bottom suspension arm has play in it dont notice it when driving but wheel moves back a good 10mm when rocked
ordered a new bush will be here shortly to correct the play
could this be why my ABS and Tyre Pressure Lights have just started to come on or just coincedence
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Old Jun 11th, 2014, 11:25 PM
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Quote: Originally Posted by darren953 (original)
hi just joined this forum and been looking around and it seems the place to be if you own a mini right i got a cooper 2004 plate and my ABS and Tyre Pressure Lights have just started coming on randomly had a look around no wires damaged as i can see
but have noticed my rear bush on my bottom suspension arm has play in it dont notice it when driving but wheel moves back a good 10mm when rocked
ordered a new bush will be here shortly to correct the play
could this be why my ABS and Tyre Pressure Lights have just started to come on or just coincedence


Hi ya

Basic no you have two problems one being a worn bush and two a sensor or wiring fault.
But I know what you mean but the way the sensors work it will not happen like that.
You need to run a diag on it , but I would say check the normal places first
You have checked the wires :-) so good :-) check the connections to all 4 corners for water and corrosion.
Then check the wiring around the abs pump for damage. it they normally get damaged as the loom comes out the abs plug and snakes down under the abs pump module it cut in on the corner causing a short.

If you run a diag on it you my get a fault code or you can check each wheel sensor independently see where the fault is may This may guide you to wire the problem is

Hope this helps
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Old Jun 11th, 2014, 11:36 PM
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thought that might be the case
i have used my friends snap on ultra tool
and it shows both rear sensors and the front nearside so erased codes
next time we read fault codes it shows front nearside only
so will look around abs pump as you advised it does look tight down there
its probably something down by the pump if it was sensors surely it would throw same fault all the time but being a short might not just guessing this end but will look tomorrow and report back

thank you for your advise
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Old Jun 11th, 2014, 11:49 PM
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Quote: Originally Posted by darren953 (original)
thought that might be the case
i have used my friends snap on ultra tool
and it shows both rear sensors and the front nearside so erased codes
next time we read fault codes it shows front nearside only
so will look around abs pump as you advised it does look tight down there
its probably something down by the pump if it was sensors surely it would throw same fault all the time but being a short might not just guessing this end but will look tomorrow and report back

thank you for your advise

Hi ya

Computers crap in crap out :-( you only need high resistance and you have a fault :-(

Clean all you plugs up on your abs/wheel speed sensors, have a good look round the wiring on you abs pump and clean the plug and also clean you ECM control plugs (engine control module)

Just remember these minis are very temperamental on there electrics.
Disconnect the battery neg the poss to disconnect then poss then neg to reconnect, these systems will get cranky if you mess with them. So any In depth work isolate the battery.
And it is not a bad idea to do a ECM reset every once in a while to clear the ECM's bad habits

Hope thus helps
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Old Jun 12th, 2014, 02:55 PM
dazza
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marque
checked by the abs pump and like you said very tight indeed
pulled out plug didnt see any obvious fault but taped it up with gaffer tape
plugged it back in went to work and back and no lights have come on yet
will see how it goes and report back over the weekend
thank you for your expert advice
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Old Jun 18th, 2014, 04:02 PM
dazza
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hi all
did think all was going well till earlier today and 2 lights back on
narrowed it down a little
if i reverse than drive forward straight away 2 lights come on
but if i reverse then wait a couple of seconds extra b4 i drive forward they dont
so could that be speed sensors not picking up the change of wheel rotation
quick enough for ecu
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