I was driving my jeep down I85 and my temp was runnig normal on my gauge but my jeep started ticking really loud like someone was hitting the valve cover with a hammer. I pulled over and checked my raditor and it exploded then my temp shot to 260. I let it cool down and it idles like sh**. I mean like its running on 3 cyl. After I give it any gas at all it will run fine like it should it just wont idle. I replavced the head gasket, radiator, water pump, thermostat, map, air idle, throttle position and o2 sensor. Im runing 14 codes, random multiple missfires, al injectors, and cyl 1,2,,4,5,6. I took it to a shop and they said they can't do anything bc it was acting fine for them and it idled perfect for me when I got it. Any idea? Please help

 

Warped head?

 

Bad PCM maybe. That many codes is somethin.. When you say radiator exploded, did you open it up, or it did it on it's own?

 

Misfires can also be caused by the CPS.

 

I popped my cap bc I have a pressure release and it exploded. So I opened it up lol. I made it sound a lot worse than it was and idk what the different abbreviations are so can you guys tell me what they stand for

 

Is there any way to test for any of the problems? Im just so annoyed bc my jeep from stop light to stop light will change, it will idle fine, the like crap, then a little rough and so on. Im completely out of ideas, also I changed the plugs and wires and all the stuff your suppose to change when your engine starts running weird

 

What year?

 

98 with the 4.0

 

You try resetting the computer. Definitely sounds like a sensor.

 

When its cold and in closed loop its at preset parameters. Try resetting.

 

How do i reset?

 

Search it there's lots of threads. Don't want to give you the wrong way. I would unhook the battery and touch the two cables together. Turn on the lights then turn em off... search the correct procedure