Les

Ford finally approved a new turbo & concern is fixed. Got to love using used parts. Thanks.

Have a 2007 f350 with a turbo howl around 1800rpm. Noise is most noticeable at turbo air inlet. Smoke tested intake & exh. Chkd. CAC tubes. No leaks anywhere. All sensors read normal. Bolted on another used turbo & noise still there. Eliminated CAC cooler by disconnecting CAC tubes. Truck runs normal otherwise. Anybody run across this? Thnx.

I have replaced the wiring harness between the PCM & FICM. So far all is good. Thanks for info.

I am positive it is the FICM harness between FICM & PCM. Have one ordered. Will let know if fixed.

code u0105, no communication with FICM. P.P.tests lead to FICM replacement which did not fix concern. FICM & PCM relays are new.

When no start FICM sync is no & all voltages 0v. Try new pcm & FICM-same.No chafed wires. All circuits test ok. Int. no communition with FICM. Any ideas?