Three ACD lights
Jun 16, 2013, 04:36 PM
#16
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Look for a used pump. They pop up pretty regularly in the FS section. It's a much cheaper fix, but you run the risk of it happening again. A rebuild kit from ACD tuning is another very reasonable option.
I went with a used pump but in hind site I would have gone with the rebuild kit.
-Mike
I went with a used pump but in hind site I would have gone with the rebuild kit.
-Mike
Jun 16, 2013, 05:57 PM
#18
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Your pump is failing. Your symptoms are identical to what so many of us have experienced when the weather turns from cold to hot. The pump is not able to hold pressure anymore as the ATF fluid it uses thins out more in the warm weather.
Rebuilding the pump is probably your best bet, but if you don't want to go down that road, a used pump can be picked up here on a pretty regular basis.
The actual replacement of the pump is pretty straight forward. Having the appropriately sized flare wrench is a good thing to have because you don't want to strip the nuts holding the lines on the pump.
Bleeding is pretty simple as well. I seem to remember following a how-to from this site for the removal/reinstall and bleeding process.
-Mike
Rebuilding the pump is probably your best bet, but if you don't want to go down that road, a used pump can be picked up here on a pretty regular basis.
The actual replacement of the pump is pretty straight forward. Having the appropriately sized flare wrench is a good thing to have because you don't want to strip the nuts holding the lines on the pump.
Bleeding is pretty simple as well. I seem to remember following a how-to from this site for the removal/reinstall and bleeding process.
-Mike
Jun 16, 2013, 06:17 PM
#19
The ACD wouldnt have anything to do with tires locking up. That would be the ABS.
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.
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.
Jun 17, 2013, 03:32 AM
#20
I must have missed your post. I thought the op thought the wheels would lock up if the ACD lights were on. Sorry about that. But yes to the op your pump is junk and your best bet is to have it rebuilt rather than use another used one. Especially if you drive your evo in the winter as the salt probably slowly shorten the life of the pump. I would also seal off any gaps with silicone if you have it rebuilt and drive your evo in the winter.
Last edited by 19DB794; Jun 17, 2013 at 03:35 AM.
Jun 17, 2013, 03:33 PM
#21
This is just making no sense I get what u guys are saying about the warm weather but I don't get y it wouldn't happen every time? For example I just left work and all 3 were on got to the store and turned the car off left after 15 min and driving the lights were on. At the next light I turned the car off and on and for the remainder of my 10min drive home only the Tarmac light was lit?
Jun 17, 2013, 08:00 PM
#22
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It's going to get progressively worse. Mine popped up out of the blue on the first hot day in the spring last year or the year before. I turned off the car, turned it back on, and the problem was gone for a while. It cooled down for a few weeks, the problem never came back. As soon as the weather was 80+ again, there it was. It would be intermittent but it slowly turned into the lights being on full time. Your just at the early stages of what I and many others have gone through.
-Mike
-Mike
Jun 18, 2013, 12:38 PM
#23
It's going to get progressively worse. Mine popped up out of the blue on the first hot day in the spring last year or the year before. I turned off the car, turned it back on, and the problem was gone for a while. It cooled down for a few weeks, the problem never came back. As soon as the weather was 80+ again, there it was. It would be intermittent but it slowly turned into the lights being on full time. Your just at the early stages of what I and many others have gone through.
-Mike
-Mike
Jun 22, 2013, 02:17 PM
#24
when i had this issue with my IX MR, it was a bad ABS wheel speed sensor on the front right wheel. come to find out it was because the wire was separated. i had a shop silver solder it and wrap it and now my ACD lights stay normal. it might not even be the pump so look it over before dumping money. but if it is a bad abs sensor straight up, then they're ~$200.
Last edited by Werdna06; Jun 22, 2013 at 02:19 PM. Reason: more information
Jun 22, 2013, 10:52 PM
#25
when i had this issue with my IX MR, it was a bad ABS wheel speed sensor on the front right wheel. come to find out it was because the wire was separated. i had a shop silver solder it and wrap it and now my ACD lights stay normal. it might not even be the pump so look it over before dumping money. but if it is a bad abs sensor straight up, then they're ~$200.
Aug 31, 2013, 08:54 AM
#27
Similar experience to mine on the Evo IX on page 3 - all lights on and pump corrosion caused ACD lights!
Aug 31, 2013, 09:12 AM
#28
Evolved Member
you can check the pump yourself... it is very simple..
when you get 3 lights, stop the car, turn off the engine. Preferably you should do this in a quiet space.. like your garage..
Floor the accelerator and keep it there.
Turn on the ignition.
The pump should start after a few seconds.
If the pump is OK then you should be able to clearly hear that the pump is slowing down, and after between 3-6 secs it should stop.
If the pump is corroded and not producing the pressure, the motor will just work at constant RPM and then stop when the ECU figures out that it is still not producing the pressure...
when you get 3 lights, stop the car, turn off the engine. Preferably you should do this in a quiet space.. like your garage..
Floor the accelerator and keep it there.
Turn on the ignition.
The pump should start after a few seconds.
If the pump is OK then you should be able to clearly hear that the pump is slowing down, and after between 3-6 secs it should stop.
If the pump is corroded and not producing the pressure, the motor will just work at constant RPM and then stop when the ECU figures out that it is still not producing the pressure...
Sep 2, 2013, 04:33 AM
#29
It's the pump. Read this thread : https://www.evolutionm.net/forums/ev...-acd-pump.html
Similar experience to mine on the Evo IX on page 3 - all lights on and pump corrosion caused ACD lights!
Similar experience to mine on the Evo IX on page 3 - all lights on and pump corrosion caused ACD lights!
i dont understand one thing, why it works in cold weather and not in hot? what is the reason?
