Mic09dcsm

Ok, I replaced my P/S pump yesterday and also took off the upper intake manifold to get to the PCV valve. The pump went on fine and so did the valve and the valve cover gasket. BUT after I replaced everything and cranked her today she runs rough. I checked and saw that I forgot the engine knock sensor so I plugged the ground back in. So the idle was now smooth but after idle, even a little throttle it becomes extremely rough. I was 1/2 quart low on oil so I filled it back up.

After all this the engine still runs extremely rough. I have to admit on one of the injectors I cracked the plastic clip when I took off the valve cover, I plugged it in and seemed to be fairly secure. The intake plenum gasket also got cracked in one place when I was connecting the hose on the bottom of the plenum. I also like a dumbass forgot the gasket for the EGR valve.

I would like to know if these collectively could contribute to an extremely rough running engine at 1100+ RPMs. And to make sure I have the vacuum hoses correct could someone with a V6 take some pictures of the ones on the passenger side?

toytech76

I think you solved your own problem. Go back and repair all the cracked and broken pieces

Mic09dcsm

I guess I'll see tomorrow when I go at it again

jason191918

check all plug wires as well...sounds like a miss

Mic09dcsm

It never did this before I took it apart, the plugs are less than 2,000 miles old, but the wires are questionable. I'm just hoping its the lack of EGR gasket and cut plenum gasket, I'll update tomorrow when I do it.

jason191918

If it idles smoothly I doubt it is a vacuum leak. Misfire under load is more likely electrical (wires).

Mic09dcsm

It was the damn injector. The little clip that came off was the problem. When I put the injector wire onto the injector the other day it stayed on but the first thing I noticed when I took the upper intake manifold off was the wire was not even near the injector. So a dead cylinder was my problem, or dumbassery. It's now fixed along with a new intake plenum gasket and EGR gasket.