If you own a Jeep Wrangler and are enduring intermittent beginning or no crank at every then this write-up is absolutely for you. Us will identify what the possible cause is of power loss, no crank, and why your Jeep won’t rotate over. It’s not always simply a negative battery. Feasible issues might be a negative starter or solenoid. Space you acquiring fuel supplied? possibly a loosened earth connection or electric corrosion on the battery terminals? we will comment on all this and an ext in this article, and explain in detail how to troubleshoot each.

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Why won’t your Jeep Wrangler start? your Jeep Wrangler won’t start if you have any type of of the below faults:

Dead or short Voltage batteryA poor StarterLoose earth CableFaulty Ignition SwitchBattery Terminal CorrosionA faulty SolenoidBad Starter RelayFaulty Park Neutral safety and security SwitchFuel

So we’ve determined a couple of potential culprits that could reason your trusty Wrangler not to start. However how perform we isolation which ingredient it actually is? The last point you desire to execute is operation out and also spend a load of money on a replacement battery, just to uncover out the was simply a loose earth strap link in the end. No cool!

So, let united state see what tests us can bring out to determine which component is faulty and also what requirements replacement. Let’s acquire into it.

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Table that Contents

My Jeep Wrangler Won’t revolve Over

My Jeep Wrangler Won’t rotate Over


The very first thing we desire to determine is the age of her battery. Many civilization seem come forget the a vehicle battery just lasts around 2-3 years nowadays, after which you have the right to expect that to die at any kind of time. Usually, there is some kind of inscription or date stamp on the battery which shows its period or acquisition date. If your batter is well over 3 year you’re most likely due for a replacement quickly anyway. So checking battery age is critical.

Next, you want to determine if the battery is completely charged and also if it can still manage the forced cranking load. Just how do we carry out that?

Bad/Low Battery

Well, the most efficient is come hook increase a voltmeter and take a reading under the load setting. The first starting point when diagnosing a dead battery is to verify your battery has actually the exactly voltage. Untrue or low strength to the starter will certainly not start your Jeep.

Batteries use CCA (Cold Cranking Amps) to measure starting power. Be conscious that her battery could have power, however, when under load, the cranking amps space not an effective enough to get thestarterto crank the engine. A good completely charged battery need to read over12.6 volts. If the battery reads12.45 voltsor less, the is low. If her battery is reading less than a 75 percent charge it needs to it is in recharged or replaced if it has expired. Battery voltage readings drop through ambient temperatures. A rough guide is 0.01 volts for every 10 levels F. (-12.2 Celsius)

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Bad Starter

So if you’ve figured out that your battery is healthy and fully charged, just how do us go about testing the starter? Remember, the starter only has one function, and also that is to turn/crank the engine. It is it! If the engine is turning over yet not beginning your problem lays elsewhere. Starters commonly last countless years and also can endure countless starts, however, if your Jeep has actually been regularly exposed to rivers or beach water, mud, and other moist or dusty conditions, it can drastically alleviate the expectation of your electric components.

Typical symptoms of a negative starter is, it has no cranking functionality and also just a clicking sound. The click sound girlfriend hear is the solenoid make the efforts to interact the starter. The starter gears and spindle could be jammed up inside or worse case, the wire cores could be burned out completely. The starter will draw heavy current to shot and start/turn the engine, however, if the battery voltage is short it can burn out the pen or even the entire wiring inside, completely destroying it.

Typical symptoms of a bad starter are:

Lights on however no crankClicking sounds

Loose planet Cable

Jeeps have been well-known for somewhat inadequate grounding, so nothing overlook this part. Make sure you have sufficient ground contact and the earth strap is still in an excellent condition. You could even need to install a second earth floor cable if require be. In many cases, the electrical faults on Jeeps aren’t usually electric as they are much more ground-related. Electrical contents don’t only need the correct strength but also a heavy ground connection to duty correctly.

Have a look at this quick video clip where Matt shows us how to fix a damaged or corroded ground cable on a 2007 Jeep Wrangler.

A great way come test your ground is by means of your voltmeter. You perform this by place the positive allude on the positive battery post, and also the an adverse lead on a clean metal surface ~ above the starter body, or the solenoid mounted on it. Make certain the steel surface is clean and free of any type of grease or oil top top the starter will suffice. For sure the voltage analysis you gain at rest is the very same as the battery analysis at rest.

Ignition switch

Many Wrangler owners have actually reported faulty ignition switches. The key is stuck in the ignition start position, unbeknown to the driver. This results in the starter constantly engaging and also eventually burn out. If you are unaware that the weird sound that makes, it have the right to go undetected and the starter will ultimately fail. Inspect the ignition move actuator pin. It’s a poor design and also a little of an inner design. Jeep has had actually many concerns with these parts as far as recalls go.

The below video demonstrates just how to download an ignition move on a Jeep Wrangler.

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My Jeep Won’t Start however It transforms Over

To diagnose, you first need to determine if the difficulty is electric or fuel-related. If friend have identified that fuel is being offered all the method to the injectors climate your following option is to check for electrical spark. Make sure you are obtaining a good strong spark come all her plugs.

If her starter spins however it does no start/crank the engine climate you have a starter problem. The spindle or journey inside the starter is perhaps damaged. If the starter is repairable, you can have the journey spindle replaced, otherwise you’ll need to replace the starter.It is also feasible (but i can not qualify under normal circumstances) that your driveshaft is snapped, or the planetary monitor in the starter is worn, in which situation a new starter is in order. Don’t forget to check for damaged this on the flywheel.

Jeep Won’t Start but Has strength 2018+

Many reports of 2018 jeep Wranglers suddenly not starting at arbitrarily intervals. Owner would avoid to to fill up at a gas station just to be stranded with a non-starting Jeep. All of the lights revolve on and theradio works. However no engine sound. No former warnings authorize either. Many reports indicate the battery and also starters room all-new or have been freshly replaced, ruling those choices out.

The auto would randomly simply start again, sometimes after about an hour. What might possibly be the cause?

In this instance, it can be the transmission temperature switch. This means your infection is running over the temperature limit. Hence, after sitting for around an hour it cools down and enables you to restart again as if nothing was wrong.

In this instance, you desire to make sure your transmission liquid is full, so check the fluid levels very first and top-up if necessary. If the fluids room full, inspect your cooling temperature sensor.

If every else fails, an additional thing you have the right to do is, try starting your Jeep native the (N) neutral position. Rotate the vital enough to move from park to neutral. Hold your foot top top the brake while turning the vital to begin the ignition.

Jeep Wrangler JK Won’t start One Click

If your Jeep won’t start and you simply hear one click, climate you can have a faulty starter motor. Again, utilizing a voltmeter through a fill function, make certain all your voltages space correct. The solenoid could have enough power come engage and also feed existing to the starter, yet a lose of current in the ground cable or faulty battery can be resulting in the starter to no crank properly.

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Jeep Haynes repair Manual

New Jeep Starter

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Wrangler Ignition Switch

Omix-ADA Ignition switch (Plastic) – 17251.07

Omix-ADA Ignition Coil – 17247.15


Always diagnose your starting with the straightforward components an initial like your planet cable, corrosion approximately the battery terminals, and unsecured battery connections. Next relocate to transmission liquid levels and sensors. If every one of those space fine check the ignition switch and battery health and also then lastly move come the an ext expensive materials like the starter and also battery instead of if necessary.