wizkid00104
Active Member
- Joined
- Oct 15, 2007
- Messages
- 1,720
- Reaction score
- 13
- Points
- 38
- Location
- West Newton/Penn Hills, PA
- Vehicle Year
- 1994/2002
- Make / Model
- Ford
- Engine Size
- 2.3L/5.4L
- Transmission
- Manual
So this past weekend I replaced my stock injectors with 17# ones. The truck has 223k on it. At the same time, I replaced my spark plugs and wires. I already checked and the wires are correct.
The truck runs good, but my vacuum was down after the replacement. It usually idled at 19 inHg and now it is closer to 15 inHg. It idles really rough and will occasionally stall. I figured it has to be a vacuum leak since it worked fine when i disassembled it.
I replaced all vacuum connectors and tubes that were dry rotted. I replaced the upper manifold gasket and torqued the bolts to 22 ftlb. I replaced the EGR gasket tonight because I thought that was problem.
After driving it, it idles smoothly for ~45 seconds then the vac drops to 15 inHg and starts running really rough again. Its like something in the computer is adjusting the way the engine runs after it sits idle for a bit. There is NO CHECK ENGINE LIGHT on.
It is a 94 2.3L 5 speed, no A/C, Jet Performance Module (installed 5+ years ago), and MSD ignition coil for the exhaust side plugs. It has a Magnaflow repalcement cat and a 2.25" Cherry Bomb exhaust. O2 sensor was replaced last fall.
I am thinking... Reset the computer and remove the Jet module, snug up EGR bolts, and then get a vacuum pump and start checking components for leaks. I am just stumped because it worked before and not after.
Here is the link to the post in my build thread: http://www.therangerstation.com/forums/showpost.php?p=1574659&postcount=505
Please provide thoughts!!!!! I am running out of ideas.....
The truck runs good, but my vacuum was down after the replacement. It usually idled at 19 inHg and now it is closer to 15 inHg. It idles really rough and will occasionally stall. I figured it has to be a vacuum leak since it worked fine when i disassembled it.
I replaced all vacuum connectors and tubes that were dry rotted. I replaced the upper manifold gasket and torqued the bolts to 22 ftlb. I replaced the EGR gasket tonight because I thought that was problem.
After driving it, it idles smoothly for ~45 seconds then the vac drops to 15 inHg and starts running really rough again. Its like something in the computer is adjusting the way the engine runs after it sits idle for a bit. There is NO CHECK ENGINE LIGHT on.
It is a 94 2.3L 5 speed, no A/C, Jet Performance Module (installed 5+ years ago), and MSD ignition coil for the exhaust side plugs. It has a Magnaflow repalcement cat and a 2.25" Cherry Bomb exhaust. O2 sensor was replaced last fall.
I am thinking... Reset the computer and remove the Jet module, snug up EGR bolts, and then get a vacuum pump and start checking components for leaks. I am just stumped because it worked before and not after.
Here is the link to the post in my build thread: http://www.therangerstation.com/forums/showpost.php?p=1574659&postcount=505
Please provide thoughts!!!!! I am running out of ideas.....