Recent content by Drews01xj

Got a chance to take the valve cover off and run the engine. None of the intake valves are spinning and are heavily scored. Also looks like a few bad lifters or a worn cam since the push rods were spinning extremely fast.

Yes the cam synchronization was set to 0 degrees

I have seen that bulletin I’m just confused on when it misfires and then I shut it off and restart it goes away until taken above 2800 rpm. Does the computer have a misfire counter that it needs to reach a certain number before it throws a code? I’m ready to put a rebuilt 4.0 in it but don’t...

I will put a vacuum gauge on it and post my readings I have removed the entire engine harness removed the wrap and checked the entire harness everything looked good no broken wires or bare wire exposed.

Today i checked battery alt and charging system all checked out ok. Not to sure where to go from here maybe faulty ecu off the shelf?

Hello I'm new to NAXJA my name is Drew. I've been having a misfire issue on my jeep that i am trying to diagnose with no luck. 2001 Jeep cherokee Xj 4.0 Auto 4x4 Codes are p0302 p0305 On first start up the engine runs fine with no misfires. Once you rev the engine or drive it above...

How is the cowl panel where the windshield wipers are?

Hello my name is Andrew and i am new to the NAXJA forum. I have searched through many post on this forum and google with no luck. (3 months of dealing with this) 2001 Jeep cherokee 4.0 with the auto trans 4x4 I keep getting a misfire code for cylinder 2&5 mostly happens above 3,000rpm...