Power loss - JeepForum.com

 
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post #1 of 4 Old 09-04-2003, 11:55 AM Thread Starter
SpikeSpeigel
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Power loss

Ok.... After about 3000rpm I have about 50% power(if that). I just changed air filter. I need to change PCV valve. I was told sludge in the valve cover could cause this also. I took the valve cover off and it looked ok. Could I add some marvel mystery oil to my oil? Will that help it clean up? Are either the sludge or the PCV valve causing my problem? Could it be that peices from my catalytic converter are clogging my exhaust? Please list some things I could check. Thanks


'99 XJ 4x4
RE 5.5" front coils, TNT Customs Y-link radius arm kit, S-10 rear leaves, RE .75" shackles, ORO u-turn steering, SYE/CV driveshaft, YJ brake lines, 33" BFG MT's, K&N drop-in, Flowmaster 40 series, Tow hooks, Trimmed fenders, M.O.R.E. motor mounts, TNT Customs frame stiffeners, RE HD trackbar/mount, Autometer Trans temp gauge w/ pillar pod

"Sticking feathers up your butt does not make you a chicken!!"
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post #2 of 4 Old 09-04-2003, 02:54 PM
awachwhiteboy
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I wouldnt add marvel to your oil, only to do a comp checkwith it, which it sounds like it would be a good idea for you to do. How many miles are on it? what engine? The PCV could have sludge in them and that does cause engines to run wierd. Pieces from the cat clogging your exhaust? not very likely. When is the last time you did a tune up? Plugs. plug wires? cap and rotor?

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post #3 of 4 Old 09-04-2003, 04:01 PM Thread Starter
SpikeSpeigel
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I did the check engine light trick and it said O2 sensor was reading lean fuel mixture. I bought a new o2 so we'll see if that helps.

'99 XJ 4x4
RE 5.5" front coils, TNT Customs Y-link radius arm kit, S-10 rear leaves, RE .75" shackles, ORO u-turn steering, SYE/CV driveshaft, YJ brake lines, 33" BFG MT's, K&N drop-in, Flowmaster 40 series, Tow hooks, Trimmed fenders, M.O.R.E. motor mounts, TNT Customs frame stiffeners, RE HD trackbar/mount, Autometer Trans temp gauge w/ pillar pod

"Sticking feathers up your butt does not make you a chicken!!"
-Tyler Durden
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post #4 of 4 Old 09-06-2003, 11:16 AM Thread Starter
SpikeSpeigel
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Well I took the O2 sensor back after getting a new flowmaster exhaust form my friends shop. Turns out the cat had broken and turned sideways blocking the airflow. The new exhaust cost $53... 60cents more than the O2 sensor

'99 XJ 4x4
RE 5.5" front coils, TNT Customs Y-link radius arm kit, S-10 rear leaves, RE .75" shackles, ORO u-turn steering, SYE/CV driveshaft, YJ brake lines, 33" BFG MT's, K&N drop-in, Flowmaster 40 series, Tow hooks, Trimmed fenders, M.O.R.E. motor mounts, TNT Customs frame stiffeners, RE HD trackbar/mount, Autometer Trans temp gauge w/ pillar pod

"Sticking feathers up your butt does not make you a chicken!!"
-Tyler Durden
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