Evo 4 AYC oil change

B6lee

B6lee

Community Leader
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Location
Bath
I sorted my abs which I only knew was a problem once I put the bulb in the dash. Then the ayc stayed on but I don't get enough traction. Keep spinning wheels cos the rear diff is runing open when ayc not working :sad:
 
B6lee

B6lee

Community Leader
Messages
13,370
Location
Bath
:( No good. Aint that bad for the diff.?

Not when you spin up a rear wheel in 3rd going round a very slight curve it aint no :shock: No it's fine cos all fluids still where they should be. Will be sending pump off for overhaul end of the month anyway :)
 
M

MillerTechnical

New Member
Messages
1
That wont be cheap
You could just try putting a pressure gauge on the pump to see if its low on pressure, and not operating the rear diff strongly enough, or a faulty solenoid not letting the good internal pressure out into the diff.

I did a search on Google for a "AYC pump Tester" and rented one from an MLR trader for a week for £20.
Pump was actually fine, but it was one of the solenoids was staying jammed in after being operated, not letting out the Juice when asked. Its a sealed system so hard to spot whats going on inside the pumps, as the mut test just showed all was good electrically, but the ayc is a hydraulic pressure system, and grit or corroded pumps dont show up, unless you take the time to check the output end too.

Hope that help, Chris (newbie on here!)
 
B6lee

B6lee

Community Leader
Messages
13,370
Location
Bath
You could just try putting a pressure gauge on the pump to see if its low on pressure, and not operating the rear diff strongly enough, or a faulty solenoid not letting the good internal pressure out into the diff.

I did a search on Google for a "AYC pump Tester" and rented one from an MLR trader for a week for £20.
Pump was actually fine, but it was one of the solenoids was staying jammed in after being operated, not letting out the Juice when asked. Its a sealed system so hard to spot whats going on inside the pumps, as the mut test just showed all was good electrically, but the ayc is a hydraulic pressure system, and grit or corroded pumps dont show up, unless you take the time to check the output end too.

Hope that help, Chris (newbie on here!)

Thanks for your input Chris !! Get a newbie thread up and tell us a bit more about what you do and what you got :)
 
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