Hey all, my first post on the forum! I have a 1999 XJ I have been working on. I have a weird issue that I cannot troubleshoot.

when I start the jeep and get driving there’s a weird engine lag. Foot on the gas, but no power or RPM increase. Sometimes this is accompanied with a click or pop noise (engine misfire?)



my fuel pressure seems fine. I have changed some parts to try to troubleshoot this: spark plugs and harness, IAC, TPS, Ignition coil pack, removed the cold air intake the last guy put on and changed to stock.

what should I look to? Has anyone experienced a similar issue? My only other thought is that I live at 10k feet and maybe the altitude is making the fuel perform weird.

thanks any advice greatly appreciated!

 

Wrong thread bud. This is the GRAND Cherokee threads.

 

thank you! I misread trying to remove now