2012 VNL with D11H405 engine.
So here is how I ended up replacing the turbo.
I have been having a very loud screaching/squealing sound coming from the turbo area (no codes/check engine light). I have recently replaced the charge air cooler, hoses, tested with soapy water and I am confident its not a boost leak. Since my original turbo had 28k hours on it, I thought it was possibly going out. So I just got done installing a reman unit from HDTurbo and it came with an actuator and they said it was already calibrated.
Took the truck for a drive and it never gets above about 15 -18lbs of boost. I was making 30 or 32 ish with my old turbo. And my intermittent squeal is still there. these readings are with the dash gauge and not a mechanical reading.
Any luck that I might just need to have Volvo do a recalibration to get my boost back to normal?
And then I’ll worry about the squeal a little later now that I know my turbo isnt about to blow up on me. lol
Also I have code SPN 1127 FMI 18 now.
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