'00 4.0 running bad update
After another can of seafoam, replacing the PCV (was shot, real shot) and yet another garage visit, we may an answer to the rough running & poor fuel economy (11 mpg at yesterday's fill up.) They said the fuel pressure regulator is f**ked up. its running about 10 psi over normal, which could cause the rough idle & bad mileage. They won't know more until they fix that, which will cost about $385. Any thoughts?
Last edited by sams dad; 09-18-2007 at 01:40 PM.