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Why Does My Jeep Wrangler Won’t Start But Has Power?

Jeeps are expensive, yet many people’s daily journeys require them. As a result, Jeeps are among the most well-liked automobile brands ever, and the Wrangler is one of the most sought-after versions. But occasionally, after numerous attempts, your Jeep won’t start. So why does Jeep Wrangler won’t start but has power?

This incident has several causes. Among them are damaged starters, faulty crankshaft position sensors, clogged fuel injectors, malfunctioning fuel pumps, and damaged spark plugs. Troubleshooting these problems is not too tricky, though. Simply fixing the broken sections will fix this issue.

These issues are all easily fixed. Therefore, check it out and start your Jeep Wrangler right away! 

Why Does Jeep Wrangler Won’t Start But Has Power?

Being unable to start your car is annoying. But, unfortunately, it always appears to happen whenever you must get somewhere or are traveling far from home. 

Here are a few typical causes of a Jeep that won’t start but still has power.

  • A bad crankshaft position sensor
  • Blocked fuel injectors
  • Damaged starter
  • Faulty spark plugs
  • Faulty fuel pump

5 Solutions For Jeep Wrangler Won’t Start But Has Power:

Your Wrangler might not start even though it has power for various reasons. 

However, there are fewer issues to fix. Here are a few fixes for the most typical problems that prevent a Jeep from starting:

1. Faulty Spark Plugs: Replace

There’s a good chance that the spark plugs cause your car’s inability to start even if the fuel system is operating correctly. This is because the air and fuel combination contained in the engine cylinders must be ignited, and that is what the spark plugs do. 

Once your car has started, the outcome is the combustion, which generates power to propel it. When the amount of carbon accumulates to the point where the spark plugs are harmed, issues occur. 

Additionally, if oil leaks enter the engine and obscure the spark plugs, they may become damaged and cease to perform correctly.

Spark plugs are a particularly delicate Jeep component. They can shatter or become stuck. 

This implies that the Jeep won’t have enough energy to begin if you attempt to ignite it. You can use a magnet to seek or even smoke testing to verify them out.

Spark plugs are cheap components that require replacement when they stop functioning.

A Jeep Wrangler spark plug replacement costs approximately $258 and $305. In addition, between $165 and $208 is the expected range for labor charges, whereas the cost of parts is around $93 and $97.

2. Faulty Fuel Pump: Replace

Most vehicles and trucks have fuel pumps that deliver fuel. It generates the pressure for injectors to pour fuel through the engine. 

The fuel tank often houses the electrically powered pump. Without a functioning pump, your Jeep Wrangler will not run. 

Likewise, your Jeep will have serious efficiency and drivability problems if the fuel pump fails. 

In addition, the engine may struggle to propel the vehicle forward if your fuel-to-air ratio is wrong and the cylinders aren’t receiving sufficient fuel. If this happens, the pistons won’t fire.

A defective fuel pump cannot be capable of transporting fuel from the fuel tank toward the engine. Additionally, the engine won’t even start because it cannot function independently.

Getting a new fuel pump is an ultimate solution to this issue. You can easily find this on several online pages for the 2007-2008 Jeep Wrangler V6 3.8L.

It would take from $220 and $1,062 to replace the fuel pump on your Jeep. The type of Jeep Wrangler you drive and its age will play a role in this. Your labor costs will range from $124 to $260.

3. Faulty Crankshaft Position Sensor: Replace

Your engine needs a spark to ignite fuel for combustion to occur. Therefore, it’s also important to time the ignition of the air/ fuel mixture. 

This will enable the engine to generate the most power while consuming the minimum fuel possible. The spark must be precise because the air and fuel may not combust completely to provide power. 

A crankshaft position sensor that is malfunctioning is the cause of this condition. This sensor must provide data for the engine control unit (ECU) to start a spark.

Crankshaft position sensors frequently malfunction in Jeeps. The engine might not start if the sensor is broken since the ECU won’t be capable of igniting the sparks. 

In addition, since they inform the computer of the crankshaft’s distance from TDC, if they fail, you will struggle to ignite your Jeep when they fail.

Installing and calibrating a new crankshaft position sensor is necessary to ensure that data reaches the ECU in time to ignite a spark.

Crankshaft position sensors can range in price from $120 to $300 for replacement. The part alone will cost between $75 and $120. The labor will cost somewhere between $45 and $180.

4. Blocked Fuel Injectors: Clean Or Replace

Hydrocarbons, silt, and other substances in the fuel cause fuel injectors to clog. Ethanol is present in most fuels. It absorbs moisture from the air and turns it into fuel.

Internal parts rust as a result of water in the gasoline. When the fuel filter is damaged, rust-related residue enters the injectors. As a result, the engine will fail to start.

So,  any injector blockage may prevent fuel from reaching the engine. This happens over time when corrosion and debris jam the injectors. 

A blockage results from the accumulation of debris. It will stop the correct quantity of fuel from entering the engine chambers. The outcome is that the car won’t start.

Cleaning the injector will fix this problem. You can simply use fuel injector cleaners for this. 

However, debris can potentially manage to harm them. It will be necessary to swap out a damaged injector. If your Jeep is for the 1999-2004 Jeep Cherokee Grand Cherokee Wrangler 4.0L, you can purchase it easily.

You’ll pay between $350 and $850 to replace the fuel injectors in your Jeep. The number of cylinders in smaller Jeeps is less than in more giant Jeeps. As a result, the cost of replacing the fuel injectors will decrease.

5. Damaged Starter: Repair Or Replace

There are some components in the starter that will become damaged if any of these components becomes problematic. 

The connectors’ ability to carry alternating energy to the starter will be compromised if they become rusted or unclean. This will result in your Jeep not starting. 

Also, the mounting bolt may come loose, which would cause the starter motor and flywheel to stop working together. 

In addition, a Jeep battery creates hydrogen gas after prolonged use, eventually reaching the battery terminals. 

This corrosive substance finally covers the terminals, obstructing the flow of electricity to the starter motor. The outcome will be your Jeep not starting.

The most frequent issue with all Jeeps is the starter. They may crack and lose sufficient strength to prevent your Jeep engine from turning over.

It is necessary to get a new starter if the old one is damaged. However, repair work is entirely acceptable if your Jeep’s starter is loose. 

You may extend the lifespan of your starter and avoid costly maintenance or replacements if you maintain it properly of the beginning motor.

Costs for new starters range from $50 to $350. In addition, the labor expenses will increase by $150 to $350. The cost of replacing a lousy starting motor often ranges from $200 to $1,450.

Frequently Asked Questions (FAQs)

The preferred vehicle for off-roading excursions is the Jeep Wrangler. But Jeep owners are accustomed to dealing with some typical issues. The most common queries from Jeep owners are listed here.

Why won’t my Jeep start despite clicking?

A poor battery that cannot start the engine could cause the popping sound you notice. When this occurs, the battery will channel the energy it still has toward the starter. 

As a result, it contacts the crankshaft when you press the key to attempt to start the engine.

A Jeep Wrangler wouldn’t start for what reason?

A Jeep may not start for a variety of reasons. However, a dead battery, an alternator issue, or a bad starter are typical causes of a Jeep Wrangler not starting.

Why won’t my Jeep start, but I have power?

The battery is typically to blame when a new engine doesn’t start. However, if the car is still getting electricity, a bad alternator and battery are generally out of the discussion. 

Some batteries could ship from the manufacturer with a lesser power holding capacity.

How long ought a starter run?

Generally, a manufacturer starter with no flaws should last roughly 80,000 starts. Starters generally persist longer in hotter areas. 

But vehicle problems are more likely to occur on the worst day of the year when you necessitate your Jeep the most.


The original symbol of excitement is the Jeep Wrangler. Unfortunately, your Wrangler might not start for a variety of reasons. You can identify the particular problem if you give yourself sufficient patience and time.

However, the incredible thing is that some Jeep Wrangler issues might be relatively simple to identify and resolve. 

So examine each one and take any necessary corrective action. Then, go on the trek and encounter the legend!

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