take a picture

sorry this post was almost a year ago, but did u get it fix? and what cuase the problem? cuz my 04 isx have the same problem leak at the soleniod that have wire conect to, it sit right on top of the filter and it have some kind of valve inside that soleniod.

That valve and little filter is basically just an electric air solenoid, (actuator). When they leak it is because the seals inside are bad allowing air to leak out the exhaust, or even a cracked housing. When that series of ISX first came out the actuator had that little filter on it. This was eliminated shortly after to just the actuator. I believe the ones with the filter are no longer available and you would have to update to the newer style. Unfortunately, these actuators are not serviceable. Cummins does not make a repair kits. Replacement is all you can do. Even worse, they are about $1000 new. Even used are well over $500 to buy.

Just be happy with a Cummins you can replace just the actuator, on a Detroit you must replace the entire turbo!

Originally Posted by fireba11

It ended up being the filter needed replaced. The "O" ring on the filter was so dry rotted it was all cracked up. Replaced the filter and all was good.

Just a word about the actuators . There's a small business in Palatine , il. that rebuilds them. $360.00 plus shipping , and a good core gets you $60.00 back.
The O-rings go bad , and its a real pain getting the right O-rings . Odd sizes , and I think they're Metric.

thanks!! guys , that's where the air leak at, so I have to pay $1000 to replace it? is there other cheaper way to fix this?

thanks!! guys ( specaily fireba11).. I remove 2 screw on that sensor , and there a lil valve inside ,i replace the O ring seal on the valve , ($6) and it all fix.