Three ACD lights
#1
Three ACD lights
My car was recently in the shop. I just got it back after about a month and now every few times I drive my car the ACD lights will be lit up. If I turn the car off and back on they go out. This never happened before my car was in the shop is there any way this is causing any damage? Or affecting my tune in any way? Any help is greatly appreciated!
#4
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ACD is pretty much worthless for daily driving. It wont affect the cars safety or driveablity.
Contrary to popular belief, the ACD modes in the Evo DO NOT change the torque distribution to the wheels.
The only thing the ACD modes alter is how long the ACD will delay in freeing the center differential after a steering input is made. It'll also determine how much locking force the ACD exhibits on the clutch pack and center differential.
If you are really worried, you can get the ACD rebuilt and cleaned out for about $600.
http://www.acd-tuning.com/
Contrary to popular belief, the ACD modes in the Evo DO NOT change the torque distribution to the wheels.
The only thing the ACD modes alter is how long the ACD will delay in freeing the center differential after a steering input is made. It'll also determine how much locking force the ACD exhibits on the clutch pack and center differential.
If you are really worried, you can get the ACD rebuilt and cleaned out for about $600.
http://www.acd-tuning.com/
#6
I was rear ended so it was in the shop for that. And I had some welding done on my driver quarter panel. Why would the pump go bad? Not like I even use it. And does it truly matter or can I just drive around with the lights on. I was told also it might just need to be bled?
#7
Actually im at the exactly same situation as you, but mine started occurring after someone worked on my car for the wheel alignments under the car.
So going to take my car in to get checked. I think its electrical and not the pump
So going to take my car in to get checked. I think its electrical and not the pump
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#8
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iTrader: (4)
I was rear ended so it was in the shop for that. And I had some welding done on my driver quarter panel. Why would the pump go bad? Not like I even use it. And does it truly matter or can I just drive around with the lights on. I was told also it might just need to be bled?
I had a different problem during autox when I would brake so hard the front end squatted forward, having the tire literally rip the ABS connection off due to no wheel well liner. All three ACD lights lit up. Try doing some hard braking when all ACD lights are on, and see if the wheels lock up. If so, ABS has been disconnected. Welding could have easily burned through the ABS wires, maybe causing the circuit to close and open at certain times. I had to reconnect and raise ride height. Hope that helps.
#11
Evolved Member
iTrader: (25)
It may just be a coincidence, but inspect the pump. View it from under the hood on the driver side to see if anything is broken. You can also get the ecu read, but the code will most likely say faulty pump.
You can drive around with all 3 lights are on. When all 3 lights are illuminated the pump is inactive. Basically, it is like driving a 2003-2004 evo which do not have the ACD system.
You have a couple options...
-Buy a new pump (about $2,000)
-Contact acd-tuning.com and get a rebuilt pump...I have dealt with them before and Matthew is awesome
-Ignore it and just disconnect the ACD ECU. The harness is behind the glovebox and once disconnected will remove all the ACD lights.
You can drive around with all 3 lights are on. When all 3 lights are illuminated the pump is inactive. Basically, it is like driving a 2003-2004 evo which do not have the ACD system.
You have a couple options...
-Buy a new pump (about $2,000)
-Contact acd-tuning.com and get a rebuilt pump...I have dealt with them before and Matthew is awesome
-Ignore it and just disconnect the ACD ECU. The harness is behind the glovebox and once disconnected will remove all the ACD lights.
#14
Evolved Member
iTrader: (33)
If i were you I would check out what the other members posted. You can drive it around with the 3 lights on but luckily when that happened to me mine was replaced under warranty and I couldnt stand knowing my ACD pump was junk. If you decide to run it the way it is, once the cooler weather comes and if the 3 lights go away and it operates as it normally should thats a tell tale sign that the pump is going bad and can no longer hold pressure when the fluid is hotter and thinner. If I remember correctly, when I had my pump replaced it cost ~1800 for a new pump and labor at the Mitsubishi dealership. As posted before you can have the pump rebuilt for $600 but you will have to do the labor and bleed the system yourself but its definitely a great alternative to buying a new pump.
Last edited by 19DB794; Jun 16, 2013 at 10:53 AM.