[Solved] Jeep Wrangler Will Not Start

 
[Solved] Jeep Wrangler Will Not Start
 

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This early 2000’s Jeep Wrangler came into the shop with a complaint of a “no start” issue. No matter how many times the key is turned, it will not start. Even though the battery has been changed and the starter was changed a few weeks ago, it will still not start.

What would make a Jeep not start?

In a Jeep, there can be a multitude of possibilities that keep it from starting. From a failed starter, bad battery or security issue, diagnosing a starting issue can be extremely complexed. In this case study, we will look at some possibilities of why this Jeep Wrangler does not start and find the solution.


Even with a new battery and new starter, this Jeep Wrangler will not start. But taking a closer look, we will see that the issue is actually simple.


Frequently Asked Question:

Where do I find wiring diagrams and step-by-step repair procedures for Jeeps?

The best online resource I use is Alldatadiy.com.

I used it for this case study to find the correct procedure for this Jeep Wrangler.

ALLDATAdiy.com - Leading source of online automotive diagnostic & repair information! Shop now

Why won’t the Jeep start but has power?

When checking out this Jeep Wrangler, I noticed that all of the other components would turn on. The radio, blower motor, and lights worked fine when I turned them on. At this point, I do not think that the reason why this Jeep won’t start is because of bad battery.

If there is power to other components in the vehicle, it is possible that the battery is good and the starting issue lies elsewhere.

A quick test of the battery with a battery checker quickly confirmed that the battery was in good condition and fully charged.

No Click.

In some cases of a vehicle not starting, a noticeable “click” can be heard.

Generally, a “click” noise, when turning the key, can signify a bad connection. A bad connection can be at the battery terminals or at the starter itself. A build-up of corrosion or loose cable can cause a “click” noise.

This Jeep did not have any noise when trying to start. It was completely silent.

Even though I did not suspect a bad connection at the time, I still decided to check for a bad connection at both the battery and the starter.

I found the problem.

When checking the Jeep for bad connections, I found the reason why it would not start.

 
[Solved] Jeep Wrangler Will Not Start

The start wire has came loose and fell on the exhaust

 

When the new starter was installed, it looks like the start wire was not connected properly. It fell off and caused the Jeep to not start.

The start wire is the main signal wire from the starter relay to “tell” the starter to engage. Without it, the starter will not engage.

After repairing the wire and connector for the start wire, it started normally. This Jeep is fixed!

 
[Solved] Jeep Wrangler Will Not Start

Repaired start wire.

 

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