I have a Ford E-350 Econoline 15 passenger van with turbo diesel. A few weeks back, I was going 80 mph and then it started this high whine sound. I think it's coming from the turbo. It only makes it when I go 50-55 mph or more. I can gun the engine in park and I don't hear it. It's only when I'm on the road. It's not really a whistle, more of a higher pitch whine than it usually makes. It's coming from the engine, not the rear end or anything like that. What can be the problem?
Country: United StatesMake: FordModel: E-350 EconolineYear: 2002
I haven't tried anything yet.
Sounds like you are correct about being a turbo issue, you can remove the doghouse and drive the truck and verify it is coming from the turbo. One the the turbine or compressor bearings may be going bad. Most typical causes of turbo failure are incorrect sealing of the air filtration system, so check the air filter minder and filter and replace if needed, also check all inlet tubes going to the turbo as well. Doble check the down runner exhaust pipes coming off the turbo the the exhaust manifold for any signs of soot, indicating an exhaust leak as well.Being a ven you can remove the dog house and inspect the pipes easily. Replace the pipes if leaking as well, this can also cause a lack of power.
20 years Auto experience, Ford ,GM, Chrysler, Asian & European