ct97cherokee
NAXJA Forum User
- Location
- Connecticut
97XJ, 4.6 stroker w/20k miles, 215k overall, AW4, daily driver,
I pulled the carpet out of my 97 XJ on Saturday. The engine had been generally running fine to that point. I say generally because i get an downstream O2 code occasionally, I think its the cat (rattles around alot, been that way for like 2 yrs). Put the seat back in on Sunday, started it up, and now its got immediate rough idle with occasional miss. Seems to accelerate normal, maybe a little off. At cruise I can feel it missing. All this continues after engine warms up. No CEL code for misfire though. Reset the computer to be sure.
So now I'm trying to figure out why my old beat up carpet plays such an integral part of the engine's performance. Or its coincidence.
While I was pulling the carpet, I had to have the key in "on" position to unlock the shifter lever, to move it back and forth to get the console moved out of the way for the carpet. Probablyt left the key in the on position for like 1 hour w/o starting it. Maybe I burned something out?
To me, it seems like its electrical. So far:
Vacuum is 16-17 whatevers
replaced the ignition coil
pulled injectors one by one, no apparent difference between each injector pull (that I could tell)
Other thoughts before I get into checking compression/pulling valve cover? next thought was O2, but I don't think that wouldn't cause the immediate rough idle (closed loop at startup), plus no CEL code. Or the cat converter? But it has power, just missing/misfiring occasionally. Maybe unplugged something by accident behind the dash/console?
A lot of stuff was replaced 20k ago when I did the stroker, inc. plugs, wires distributor, rotor, etc. Hoping its not the ol' aftermarket cam/lifter fail.
Thanks
I pulled the carpet out of my 97 XJ on Saturday. The engine had been generally running fine to that point. I say generally because i get an downstream O2 code occasionally, I think its the cat (rattles around alot, been that way for like 2 yrs). Put the seat back in on Sunday, started it up, and now its got immediate rough idle with occasional miss. Seems to accelerate normal, maybe a little off. At cruise I can feel it missing. All this continues after engine warms up. No CEL code for misfire though. Reset the computer to be sure.
So now I'm trying to figure out why my old beat up carpet plays such an integral part of the engine's performance. Or its coincidence.
While I was pulling the carpet, I had to have the key in "on" position to unlock the shifter lever, to move it back and forth to get the console moved out of the way for the carpet. Probablyt left the key in the on position for like 1 hour w/o starting it. Maybe I burned something out?
To me, it seems like its electrical. So far:
Vacuum is 16-17 whatevers
replaced the ignition coil
pulled injectors one by one, no apparent difference between each injector pull (that I could tell)
Other thoughts before I get into checking compression/pulling valve cover? next thought was O2, but I don't think that wouldn't cause the immediate rough idle (closed loop at startup), plus no CEL code. Or the cat converter? But it has power, just missing/misfiring occasionally. Maybe unplugged something by accident behind the dash/console?
A lot of stuff was replaced 20k ago when I did the stroker, inc. plugs, wires distributor, rotor, etc. Hoping its not the ol' aftermarket cam/lifter fail.
Thanks