Aluminum Block V8s 4.1, 4.5, 4.6, and 4.9 liter engines.

4.6L northstar oil filter bypass valve

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Old 01-18-2009, 09:17 PM
rockfangd's Avatar
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Default 4.6L northstar oil filter bypass valve

Does anyone know where this is located. I am trying to rule things out for the oil pressure situation.
So far i have changed the oil and filter Mobil 5000 and ac-delco PF-61 filter
Replaced oil pressure sending unit. The old one was leaking.
The oil pressure light will flicker around 210* degrees. and any idle at or below 625 rpms.
I have seen so many with this situation but noone seems to have ever found a solution.
The engine purrs like a kitten at idle and has absolutely no odd noises. It is just an annoyance especially when it is saying shut off engine when you sit at lights.
Thanks to all in advance
 
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