Loud Whining Noise, Bad Turbo? - 6.0 PSD, 2004
Ford E-450 chasis equiped with the 6.0 PSD, this is a 2004 build when problems with this engine were at their height: I took my RV in for it's 30k service today. I also told them when I dropped it off to checkout a loud whine that starts to pick up as I get in the throttle. I told them I thought it was the turbo kicking in but I did not feel any boost accompanying the whine. This whine is really loud, and the trouble is it is intermittant, in fact today when I drove it to the dealer it wasn't making any noise at all, and the truck ran real strong, sure as can be when they hooked it up to their computer and drove it everything tested good. When I drove it from New York to Dallas last week the first 700 miles were fine, then I noticed this whine around Cincinanti while climbing a hill, it came on sort of as a low hum but got louder and louder until it sounded really out of place, too loud to be a properly functioning turbo, uncomfortably loud, in fact it scared me to the point of thinking something was about to come apart. Well it made this noise on and off the rest of the trip to Dallas but has stopped as of yesterday. I am afraid the Variable Guides of the turbo may be sticking intermittantly but haven't failed completely....or is it something completely different, is there a large cooling fan that comes on sometimes, a scary loud one?
UPDATE: Drove the RV today for a 80 mile day trip. The loud noise started again about 10 miles into the trip. After it starts to wind up if I let up on the gas it mitigates but might come right back if i get into the gas again. Sometimes letting up on the gas completely for 5 seconds or so makes it go away for a good while, but it always happens again eventually. This must be a bad turbo no?? When this noise is at it's peak I always let up on the gas cause it sounds like something is about to come apart? HELP
Last edited by SJPotter; 06-11-2011 at 06:28 PM.
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