VPOD on an ISX 870

Are we talking an 07 or earlier Cummins ? I believe it's called the turbo actuator valve . Little red box , on the lower front left side of the engine ? It's electo/ air combo. How many miles since its been changed ? Read on here they can go bad at 300,000 mi. Or , last 800,000. Lot depends on the air supply to it .
You can take them apart , and rebuild them. Read where you'll play heck trying to find parts , though. Cummins doesn't make a rebuild kit for them , new is over $800.00 .
Place near Chicago rebuilds them . Costs $400.00 for one of theirs .
when are you hearing air out the exhaust port ? All the time , at idle , when ?

 

Hi. Yea,I hear you ! Fleetpride is wrong,if we are all talking the same part. It's a snap to change out , takes maybe a half hour , if you're careful. Do you have an air dryer ,and do you change the filters regularly ? That alone can kill this part ! It needs clean, dry air. PM me , I'll look up the place in Illinois I got mine from. Send pics , also . I wouldn't want you to buy the wrong part !
It shouldn't leak air , at idle, unless your air pressure is Way above normal. Mine is just under 130 lbs.
My advise : check it yourself. See if you can hear anything. What I've learned ,on these forums , it's not so much a leak at idle , though that's bad enough , it's a leak when you're going down the road , that's the real problem. That said , if its leaking at idle , it may need to be replaced.
Want to be Sure we're talking the same part.
Takes a 10 mm an 11/16 , maybe a 9/16ths,too. Be careful with the air lines , in and out . Any dirt , can ruin a new one real quick. Not to mention a turbo.

 

Ok . Price for that part , at KW dealer ,is $859 . Don't know Fleetpride , but sounds like they're Proud of themselves.
Place in Palatine, Il. , that rebuilds these things , is AVI Electronics Corp. ph. Is 312-450-7788 . They have a web page , but you have to dig for it , on Google. Get the web page , you'll see it. I think all 2002-2006 used the same part. Cost is $360.00 , plus shipping. He says he'll give you back $60.00 , if you send your old one back , And its rebuildable . One year warranty.
Remember , anyone with a little skill can fix these things . Not much to em , if the switch works . I think just a strange o-ring or two , and a gasket. If you can find the o-ring. Someone has , that's for sure! Maybe $5.00 in parts , a little work , shazzam , you've rebuilt it !
I ordered one , and its working OK, it wasn't the problem , but I didn't know that until I installed a new one.
BTW , a good guy on this forum , in answer on a post I put up , put up a link to AVI's web page. You can find it , if you look . He gets the credit , or blame , not me. I can't link , sorry , my iPad wont copy it correctly , or I don't know how . Whatever.
Hope this helps .

 

Look on page 3 , of my post , ISX Boost , you'll find Ramblin' mans link to AVI.