Multiple miss fires and hisatateing 2006 jeep liberty sport 3.7 50367 milage

[pluto316]

I have a 2006 jeep liberty sport 3.7 I have multiple miss files and it hisatate around 2000 rpm please help

 

[RenKJ]

Did you pull codes? these days you can get a cheap Bluetooth elm327 device that plugs into the engine computer and feeds data to your phone

 

[pluto316]

Bo code just check engine light flashing

 

[mase]

I have had 5 Jeep Liberty's and this happened on two of them when the Spark Plugs needed to be replaced. I Would try that first.

Important to use NGK and the correct plug.

When installing the new plugs if you use a rubber hose 3/8" that fits over the top of the spark plug it makes in real easy to get in started in the spark plug hole. Then you use the spark plug socket to tighten it in.

 

[cas123]

Plugs. May need coilpacks too. Could be fuel injectors are clogging. I would start with plugs and some Seafoam. Check to make sure everything is tight. Check to make sure not leaking coolant on anything. I had a long saga of problems from a coolant leak into my coilpacks and spark plugs.