Re: 4.6L Oil pressure erratic
Just a thought .. Have you recently done an oil change.. you might have a bad filter. I think there is a bypass at the filter (I could be wrong) using too heavy of an oil can jam the bypass when revved cold. I have heard of filters being blown off when cold with 20-50. You might want to pull the pan and check for sludge or anything else that might clog your pump intake.
Last edited by Mojave Explorer; 06-21-2004 at 00:12.
Reason: added information