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    cedric44's Avatar
    cedric44 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Mar 14, 2012, 12:55 PM
    A loss of power at 70mph
    I have a 1999 ford f350 7.3 PSD it loses power. At 70mph
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Mar 14, 2012, 01:27 PM
    . Damaged turbo?

    . Replace air filter, if it hasn't been changed in 15,000 miles.

    . Replace under hood and under frame fuel filters, if they have not been replaced in 15,000 miles.

    . Check fuel pump pressure.
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