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VP44, LP or ?

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Old May 23, 2007 | 12:39 PM
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mitchellalso
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VP44, LP or ?
my engine surges 100-200 RPM at 1500 RPM, 60-65 MPH when it shifts into the last gear. runs smooth before and after the above RPM and MPH.
any ideas as to why?
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Old May 23, 2007 | 01:35 PM
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What does the FP guage say when it surges?

Have u tried reading the codes?
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Old May 23, 2007 | 05:03 PM
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FP is steady at 12-14 lbs. no codes. only does it when the truck has warmed up.
changed the filter, same results.
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Old May 23, 2007 | 11:30 PM
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Interesting.....keep driving it to see if anything changes.
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Old May 25, 2007 | 11:50 PM
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Originally Posted by mitchellalso
my engine surges 100-200 RPM at 1500 RPM, 60-65 MPH when it shifts into the last gear. runs smooth before and after the above RPM and MPH.
any ideas as to why?
Mine did that before the VP-44 started throwing codes.. Hope this isn't the case for you.

Joe
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