i have a 2wd so i have no ds in the way and stuff. me and my buddy took it out the first time with extensions took 10 mins.

 

No spark can be a number of things including crank sensor, ASD circuit, ignition switch.

TEST things before replacing things. Otherwise, unless you are lucky, this gets expensive and you get frustrated in a hurry.

Link to an article on testing the crank sensor.

http://www.jeepforum.com/forum/f11/c...ailing-639123/

 

I don't know if it matters but I also noticed that when I key the jeep on their is no check engine light at all.

 

Mine sme as you. whenyou turn the key, no engine check light on. when no engine check light, engine crank but dont start up. I changed my ECUfor a rebuilt one and it works perfectly fine. but you better try the CPS 1st as it is much cheaper. I confirm mine is the ECU prob as i listen to my mechanic n he borrowedme aused ECU for try out. u can borrow someone else CPS or ECU for try out. keep posted for results ok. Good luck!

 

So yours turned out to be the computer? Uh oh

 

Has anyone ever had this problem where the cps went out and there was no check engine light at all the engine would just crank and crank and it happens when the truck has sat for a day or 2. But usually when it sits I could get it to start now I can't. I was leaning towards the ecu but didnt want to believe it.

 

Did you check for Spark and Fuel yet?

 

I have fuel present at the rail. Pretty sure I have no spark.

 

Test for spark or test your crank sensor.

But test.

All the discussion in the world doesn't help you much. You need test data that confirms where you need to look.

 

I did test the cps and it was OL. Which means its testing good correct? It also has magnetism

 

Borrow a ECU n try on your car. Its like less than 10mins for switching it. I did it on my office parking lot..LOL..its easy as long u got a tools ready. I'm in indonesia. I would love to try our for you for free if I'm there..I like finding n fixing problems in cars..in here we can service ecu for like usd100. mostly more than 3years still runs well. I saw at ebay its like 100. But make sure the if its really the problem b4 purchasing e parts.

 

ok so somethings definitely going on with my jeep. i just came home after three days of not messing with the jeep and it started right up without any tinkering. now what i have noticed was that when the jeep wouldnt start it was moist outside. it was drizzling and snow was melting. when i came home the weather was 30 degrees and dry and it started. im at a loss

 

Bump

 

Changed the spark plug wiresd today and its running worse than before. Going to replace the sensor today