Vehicle: 1997 TJ 2.5L
Engine mods: cone filter intake on 4.0 tube, electric fan. Everything else is stock.
The basic problem is this:
After the engine has warmed up a bit, there is a definite lack of power and rough acceleration/stumble specifically at 3000 rpms. ESPECIALLY obvious when I've got the hammer down, then let off it a little, then step back on the gas. When I get BACK ON the gas, the motor has the hesitation and roughness associated w/ LEAN fuel mixture. The Check Engine Light error code that displays is 51...the one that says, "Lean condition detected".
Right now, (before I start spending money on parts that may or maynot be broken) I'm running some injector cleaner thru it in hopes that maybe the injectors were just in need of some cleaning. Maybe I should switch to 89 Octane? (instead of 87).
I'm looking for input regarding possible problems w/ the fuel system... ie, injectors, fuel rail, pressure regulator, etc. Has anyone experienced similar problems?
Engine mods: cone filter intake on 4.0 tube, electric fan. Everything else is stock.
The basic problem is this:
After the engine has warmed up a bit, there is a definite lack of power and rough acceleration/stumble specifically at 3000 rpms. ESPECIALLY obvious when I've got the hammer down, then let off it a little, then step back on the gas. When I get BACK ON the gas, the motor has the hesitation and roughness associated w/ LEAN fuel mixture. The Check Engine Light error code that displays is 51...the one that says, "Lean condition detected".
Right now, (before I start spending money on parts that may or maynot be broken) I'm running some injector cleaner thru it in hopes that maybe the injectors were just in need of some cleaning. Maybe I should switch to 89 Octane? (instead of 87).
I'm looking for input regarding possible problems w/ the fuel system... ie, injectors, fuel rail, pressure regulator, etc. Has anyone experienced similar problems?