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post #3 of (permalink) Old 04-21-2019, 09:29 PM
klhansen
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Quote:
Originally Posted by RT View Post
even in our one week of devastating 40 degree freezing weather.
Wimp!!
Most are louder when cold. Below a certain oil temp, the PCM will crank up the HP oil pressure to compensate for the oil being thicker going thru the injection system. Could also be the old "cackle", which was supposedly an issue with the earlier ('99-'00) trucks till Ford fixed it with the "long lead" injector in #8.
Me, I just install ear plugs and drive on.

First truck -- 1929 Model A Ford pickup, restored from ground up. Wish I still had it!
'99.5 F250 PSD Supercab LB 4x4, ZF-6 w/SB Con OFE, 3.73LS, Boost & pyro gauges, Swamps S175/146 injectors, DP 80 HP Econo PCM (classic version
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), AIS,
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regulated return,
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