Anyone ever have an audible squel/modulating shrill sound when accelerating after truck has been running for a while? It is most noticeable on the highway when cruising and accelerating. Somewhere around 1500-2000 rpm. See attached video. I was extra careful while driving and recording.
https://drive.google.com/file/d/1HXXCVp0k10FMz0VyEGP71yDvVb8Cl_fk/view?usp=drivesdk
This sound is driving me nuts. I thought it was a vacuum leak so I replaced the 4x4 check valve and solenoid. This did not fix it. Let me know what you think.
https://drive.google.com/file/d/1HXXCVp0k10FMz0VyEGP71yDvVb8Cl_fk/view?usp=drivesdk
This sound is driving me nuts. I thought it was a vacuum leak so I replaced the 4x4 check valve and solenoid. This did not fix it. Let me know what you think.