Help....6.4 has no upper end power?? - Ford Powerstroke Diesel Forum
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Old 05-06-2012, 02:00 PM
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Help....6.4 has no upper end power??

Help, just got bak from a 350 mile round trip. Everything fine until truk made a bad hesitation and cruise control clicked off. After that truk sounded ok but had no power at higher speeds, all guages were normal and turbo psi was normal but no power for passing and going uphill. Cruise control would not function either

Any ideas what went wrong ???

idles and starts fine no different engine noise either?
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Old 05-06-2012, 04:05 PM
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bueller....bueller....bueller
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Old 05-06-2012, 05:27 PM
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update drove truk out the highway. chenck engine light came on loss of power and cruise control shut down
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Old 05-06-2012, 05:29 PM
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Scan it. Or else we can guess all day.
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Old 05-07-2012, 10:05 AM
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Smart A$$
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Old 05-07-2012, 02:39 PM
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Well you'll get answers all day long, but they'll be guesses.
The CEL is on, meaning there are codes.
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Old 05-07-2012, 03:44 PM
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according to my dealer it is the high pressure fuel pump?
with this be covered under 100k dsl engine warranty?

service manager said it would but I dont trust him
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Old 05-07-2012, 04:55 PM
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I've heard of a lot of warranties being denied because of 'poor fuel system maintenance' and 'bad fuel'
Better get receipts together
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