I have a 1990 cherokee with the 4.0 and an auto.

I worked on it all week and it always started fine. We drove it on to the trailor starturday evening and hualed it to wellsville about and hour and a half away and got there and i had no spark. Didnt wheel it or anything had to push it off the trailor.

We replaced the cap and rotor, the coil, and the crank position sensor.

The jeep is now back in the garage and i need some advise on where to go from here, Some people said pick up coil, or the ecm got fried idk where to start.

Any help would be greatly apriciated.

Thanks, Joe

 

heres how you test the sync sensor/cam shaft sensor im pretty sure it just tells the injectors when to fire...http://www.lunghd.com/Tech_Articles/...lse_Stator.htm

 

also search neutral saftey switch /nss/

 

Alright thanks ill test the cam sensor then go from there

 

forget this this is for no crank issue

 

when you replace thecoil did you do the hole assembly or just the coil...http://www.jeep4x4center.com/product...umber=33002299

 

theres testing for the cps here to make sure it workinghttp://www.lunghd.com/Tech_Articles/...iagnostics.htm

 

Just the coil

 

jy time

 

The Cherokee lives!!!! It was the ingnition control mod "$18 at pull apart" thanks alot man for all the help seriosly thanks alot.

Took her out for the first time, just got back from the local abanden strip mine and it was a blast! It needs lookers but it still climbed some pretty good hills with enofe skinny petal lol.

thank your very much for your time and help.