89 yj problem

[tnsteelerfan]

i have a 89 yj 4.2 that will start sometimes and than it won't .when it wont start there is no spark from coil [new coil] go out later and it starts got me puzzled?? Any ideas would be great:???:

 

[kingaircj]

How is you grounds? What about your battery cables?

 

[tnsteelerfan]

turns over great cables good ground good would not start today but let it roll down hill and poped the clutch fired right up. Than quit just like i turned the key off :???:

 

[kingaircj]

Maybe someone else who has a 4.2 could help you. My wife has a 88 yj with 2.5. I know on hers it has a CPS crank position sensor. I also know that they are have be known to fail. Which should turn of the spark.

 

[tnsteelerfan]

hey thanks for the help found out that the junction box where hot wires connect was loose .been starting all day. We will see if that works.

 

[azjpiper151]

I have done the fore dist and coil upgrade and it was an amazing diffrence and EASY to do. If you have not I would definitaly recomend it!