Prolong Highway speeds - Ranger-Forums - The Ultimate Ford Ranger Resource


2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 01-26-2012
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Location: Spanaway, Wa.
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Prolong Highway speeds

I have a 90 XLT xcab 2.9 5sp 4x4 150+++ miles, truck runs great except for 1 problem. After driving at prolong highway speeds it starts a high pitched knock that continues until I get back to city driving/speeds then gradually goes away. Any suggestions on causing the knock ? Thinking maybe oil pump and/or clogged oil passages.
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Old 01-30-2012
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Location: st. aug, fl.
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Hard to say. I've never heard of a description like that. Highway speeds does seem to be oil related though.
You could change the oil run the route again and see what happens.
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