Turbo whistling? - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 07-11-2013, 07:12 AM Thread Starter
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Turbo whistling?

2001 F250 7.3 auto, bought new, has a western diesel chip & boost tube in vac line going to waste gate. I was pulling a trailer weighing about 10,000 lbs up a grade, trans down shifted, engine rpm up, 1 loud pop & a whistling sound started. no more pop, whistles now on acceleration & pulling loads, is the waste gate stuck, truck still runs real good. went on a 1800 mile trip up hills & down with a 7000 lb trailer @ 75 just a whistling. What should I look for?
Steve
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post #2 of 5 Old 07-13-2013, 01:10 PM
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Maybe one of the intake boots is loose or has a leak? Check all connections.

Chris
1984 F-350 XLT 4x4 4spd. 6.9 (project)
1996 F-250 XLT 4x4 5spd. 7.3
2001 Excursion XLT 4x4 Auto 7.3
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post #3 of 5 Old 07-14-2013, 07:45 AM Thread Starter
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turbo whistling

I have checked all boots and clamps, all this stuff. No loud whistling occurred until a 7000lb trailer was being pulled, downshifted automatically, rpm up high one loud pop & whistling began. Whistles ever since to some degree, no changes in any performance or mpg just whistles. Wife says it sounds like a dodge/cummins on steroids. What else could it be?
Steve
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post #4 of 5 Old 07-14-2013, 08:21 AM
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2006 F250 Lariat FX4 6.0 PSD
Performance: EGR delete, SCT tuned, 5" straight pipe, blue spring, 03' turbo
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post #5 of 5 Old 07-15-2013, 07:39 AM
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What about on the exhaust side? Any gauges to monitor boost? Air filter ok? You mentioned waste gate, maybe take a close look at that. I don't have any experience with them though.

Chris
1984 F-350 XLT 4x4 4spd. 6.9 (project)
1996 F-250 XLT 4x4 5spd. 7.3
2001 Excursion XLT 4x4 Auto 7.3
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