engine idles rough in gear
Thread Starter
Junior Member
Joined: Dec 2012
Posts: 3
Likes: 0
engine idles rough in gear
I just started having problems with my 2000 5.4 v8 running rough. It ran fine and than the next time I took it out it ran really rough and shock bad when in gear. It smooths out around 2000 rpm. When I take my foot of the gas pedal in smooths out so it only does it under a load. I replaced the intake manifold gasket about 6000 miles ago. I dont think it is a ignition issue since it only does it in gear and only below 2000 rpm. Any advice would be helpfull. Is it possible the intake gasket blew again? Thanks for any advice. Raymond
Thread Starter
Junior Member
Joined: Dec 2012
Posts: 3
Likes: 0
I replaced the tps and the iac motor at the same time I replaced the intake gasket. Also I replaced all the spark plugs and fuel filter. and also changed out the air box sensor(I cant think of the name). Could it be a vacuum issue? and if so any ideas of where to start looking?