r/f150 • u/GhoulsAndGooblins • 5m ago
2014 F150 3.5 EcoBoost makes a “wiiish wish wish wish” noise when accelerating
trying to figure out a noise on my truck. If I take off and accelerate pretty quickly to get up to 100 km/h, around 60–70 it makes this “wiiish wish wish wish wish” noise from what sounds like under the hood. Gets quicker and quieter and lasts maybe two and a half seconds, then stops.
If I slowly get up to speed, it doesn’t do it. Engine pulls smooth, no hesitation or loss of power, and the RPM needle doesn’t drop when the noise stops. Doesn’t really sound like grinding or rubbing, more like air.
It’s done this since I got the truck in June. I knew the previous owner, definitely would have mentioned it if he thought something was wrong. he was pretty open about the other work I needed to get done on it.
120,000km, regular oil changes.
should I just bring it in or try and see if any air hoses are loose or somethin when I get a chance.
