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Ron, ASE Certified Technician
Category: Jeep
Satisfied Customers: 35876
Experience:  34 year working in the automotive field as a Tech.
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It has no spark. replaced coil and still no spark. Starter

Customer Question

It has no spark. replaced coil and still no spark.
JA: Has the starter or ignition module been replaced?
Customer: Starter was replaced a few days before the coil was. It ran fine for about 2 days. Shut it down and would not restart.
JA: What is the model/year of your Jeep?
Customer: 1990 jeep wrangler yj
JA: Are you fixing your Wrangler yourself? What have you tried so far?
Customer: yes. just changed the coil. cannot locate ign. mod. starter was changed by another person.
JA: Anything else you want the mechanic to know before I connect you?
Customer: how to test ign. mod. would be helpful.
Submitted: 11 months ago.
Category: Jeep
Expert:  Ron replied 11 months ago.

Hello. My name is ***** ***** I am happy to assist you today. Give me just a moment to review your post, and I'll be right back with the help you need.

Expert:  Ron replied 11 months ago.

What size engine are you working on , the 2.5 or the 4.2?

Customer: replied 11 months ago.
Expert:  Ron replied 11 months ago.

Thank you for that, the lack of spark can be caused by a failure of any of the following,

  • Ignition Coil
  • Ignition Module
  • Pick-Up Coil

    Are you able to do some testing?
Customer: replied 11 months ago.
Customer: replied 11 months ago.
coil was replaced
Expert:  Ron replied 11 months ago.

Okay since the coil is new I would start with checking the ignition module and the Pick up. See the steps to do this in the link below. Run these steps and see if this will help you narrow it down.