After almost 6 years i fixed my inconsistent rough idle by accident.

Since I bought this truck in 8/05 its had an inconsistent rough idle, it would idle so smooth you couldn't even tell it was running to shaking an empty seat.

Last week when I changed my fuel filters I poured the oldfilters into a coffee can and the 2nd filter had some brass looking shavings in the fuel so the next day I put a fuel pump on it and its idled so smoothly you can barely tell its running for 3 days now also pulls w/o any vibration at all. After changing all the fuel lines I had decided that it had to be the ECM.

I know that the fuel psi has been checked with a gauge or on the ECM at least a dozen times chasin a bad injector or a flutter with the last time being 6 weeks ago.

Im just so surprised that it was checked so many times w/o showing anything wrong but was the problem all along.

It looks like Aussie Dave hit the nail right on the head when I was complaining about it earlier.

It looks like Aussie Dave hit the nail on the head when

 

Posting from a phone... I hate it when I've posted part of a line then lose it and can't get back to the partial sentence im trying to delete

 

With as many times as a shop had a gauge on it I will never understand why they didn't figure it out.