I had to post to comment on my most recent fix that has finally resolved an issue present since the purchase of the truck a year ago but had gotten worse and worse until the point of becoming a safety concern.
Truck had little power below 2000 rpms, but once beyond there was much better. Recently it got to the point it was tough to pull out into traffic. I was manually shifting the automatic to try and squeeze everything I could out of it.
I own a auto performance shop dealing with turbo'd cars, so I was comfortable working on whatever, but I was at a loss as to what to fix.
I thought my fuel pressure was low, so I installed a pressure gauge. 40 psi all the time.
New spark plugs, new fuel filter, new fuel pressure regulator, adjusted the valves, cleaned throttle body and piping, made a new intake pipe with new silicone couplers and clamps, checked the compression, checked the timing....
Ran better but still little power below 2000 rpms, and a slight hesitation.
Decided to ditch the EGR valve. Checked it with air and it seemed to leak badly. So I cut a piece of steel to cover the hole and used some copper RTV, capped the vacuum lines, then cut the flex pipe and used one cap welded shut to close off the exhaust manifold hole.
The results are the best the truck has ever run. No hesitation, more power, seemingly a bit better fuel economy.
Significant change to the truck. I felt I had to share.
I'm done with emissions with the truck, so I'm OK with ditching these parts. I think they do more harm than good.
Cory
Truck had little power below 2000 rpms, but once beyond there was much better. Recently it got to the point it was tough to pull out into traffic. I was manually shifting the automatic to try and squeeze everything I could out of it.
I own a auto performance shop dealing with turbo'd cars, so I was comfortable working on whatever, but I was at a loss as to what to fix.
I thought my fuel pressure was low, so I installed a pressure gauge. 40 psi all the time.
New spark plugs, new fuel filter, new fuel pressure regulator, adjusted the valves, cleaned throttle body and piping, made a new intake pipe with new silicone couplers and clamps, checked the compression, checked the timing....
Ran better but still little power below 2000 rpms, and a slight hesitation.
Decided to ditch the EGR valve. Checked it with air and it seemed to leak badly. So I cut a piece of steel to cover the hole and used some copper RTV, capped the vacuum lines, then cut the flex pipe and used one cap welded shut to close off the exhaust manifold hole.
The results are the best the truck has ever run. No hesitation, more power, seemingly a bit better fuel economy.
Significant change to the truck. I felt I had to share.
I'm done with emissions with the truck, so I'm OK with ditching these parts. I think they do more harm than good.
Cory
