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Attesa not working

fmlycar

By fmlycar,
in Four Door Family & Wagoneers

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fmlycar Proficient

fmlycar

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Posted (edited)

Attesa not working

I have a S1 C34 that is manual converted, with power fc. I have the secret squirrel mod done. It previously had an extreme TSC that I removed thinking that may be the cause, but no change. My AWD has never worked since I bought the car 2 years ago. When I purchased the car the owner said the Attesa needed to be bled since the gearbox had been out. I bled the Attesa and it still doesn't work. I can hear the pump prime when I turn ign on and it runs occasionally while sitting at idle. I have had the awd and abs lights come on and stay on after sitting idle for long periods. I don't seem to have any fault codes to try and work out why it doesn't work. I have checked that the Attesa ECU is receiving a TPS signal and that is all ok. I'd really like to get it working, as it is hard getting the power down just through the rear wheels. I've been reading and am thinking either pressure switch or accumulator. Is there any way to check these for sure?

Edited by fmlycar
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Count Grantleyish Grand Master

Count Grantleyish

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Posted

Crawl underneath the car and have a look at sensor and ABS rings on each axle. 

Mine had an axle popped out of rear LSD housing causing ATTESA and ABS not working properly by sensor not reading it properly, sometimes it's both, sometimes it's either one. 

The width of sensor should be in-line of the ABS ring as in =o= if you get my drift. 

fmlycar Proficient

fmlycar

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One of the rear abs rings (passenger side) has a crack through it. Would that make a difference? I put it in gear while it was off the ground and it has drive to the front left, but I can stop it with my hand

 

 

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