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C15 ACERT Intake Valve Actuator??
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tlorr
Posted 10/3/2018 13:39 (#7023471)
Subject: C15 ACERT Intake Valve Actuator??


SC.OHIO		Hey all. Hope everyone is having a safe and productive harvest so far. I have a question in regards to intake valve actuators on a C15 ACERT in a KW T800.
The actuators keep giving us trouble. Last night on the last semi load of the night the check engine light came on. Turns out after flashing the code it was something to do with IVA pressure. Last year we had a similar incident and after removing the valve cover we discovered many jam nuts loose on the valve bridges. Has anyone on here ever deleted them? And if so is it hard to do?? Thanks for any insight.
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combinejockey
Posted 10/3/2018 13:57 (#7023492 - in reply to #7023471)
Subject: RE: C15 ACERT Intake Valve Actuator??


I know of several that have been "deactivated" and a tune to the motor and it makes a huge huge difference. Actually works good to leave both turbos on and not single turbo it.
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tlorr
Posted 10/3/2018 14:22 (#7023531 - in reply to #7023492)
Subject: RE: C15 ACERT Intake Valve Actuator??


SC.OHIO		Thanks for the insight. I have read where guys convert it back to one turbo. I was wondering if it would make any difference. We have two T800s. One with a C15 single turbo (Non- ACERT) and of course the other. Ironically the one with single turbo has less HP but it is much more responsive. The IVAs on the other truck I think are limiting it extremely. Do you know how involved removing the IVA system would be?
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RPTI
Posted 10/3/2018 16:24 (#7023641 - in reply to #7023471)
Subject: RE: C15 ACERT Intake Valve Actuator??


Nebraska		May be wiring harness. I kept getting codes on mine once it run for awhile and warm up and would derate the power as soon as check engine light would come on. Guy before me had changed different sensors and such but the harness fixed it
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Luckyfarmer
Posted 10/3/2018 18:31 (#7023810 - in reply to #7023471)
Subject: RE: C15 ACERT Intake Valve Actuator??


Central South Dakota		Was the pins in the harness to the actuators on ours. 06 C-15
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1973
Posted 10/3/2018 20:40 (#7024121 - in reply to #7023471)
Subject: RE: C15 ACERT Intake Valve Actuator??


SW. IOWA		It's easier to delete a bsx than an mxs.
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combinejockey
Posted 10/3/2018 22:00 (#7024336 - in reply to #7023531)
Subject: RE: C15 ACERT Intake Valve Actuator??


I am under the thought that nothing was removed physically, just put in a neutral setting and ignored, then tuned I will verify cost tomorrow and let you know.
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mcinnisfarms
Posted 10/4/2018 07:45 (#7024845 - in reply to #7023471)
Subject: RE: C15 ACERT Intake Valve Actuator??


East Texas		We deleted IVA’s on our MXS’s. Simple delete tune and back off the actuators and adjust valves while there. Leave the twin turbos, they aren’t the problem with the acert’s. The lousy tuning is the issue.
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tlorr
Posted 10/5/2018 08:48 (#7026973 - in reply to #7024845)
Subject: RE: C15 ACERT Intake Valve Actuator??


SC.OHIO		Thanks a bunch! I was hoping all we would have to do is back the IVAs off and re-tune it. Sounds like that is the simplest thing to do.
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