Your 2020 Jeep Cherokee cranks, but won’t start. That’s a frustrating situation, especially when you need to get going.
You turn the key, hear the engine whirring, but nothing happens. What could be the problem? Don’t worry, you’re not alone, and understanding the common culprits can help you diagnose and potentially fix the issue. This guide will walk you through the most likely reasons your Jeep Cherokee is making that frustrating cranking sound without actually firing up.
Read on to discover what might be stopping your adventure before it even begins.
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The Dreaded Crank No Start
The dreaded crank no start. It’s a frustrating moment. Your Jeep Cherokee turns over. The engine spins. But it won’t catch. No ignition. This is a common problem. It can happen to any vehicle. Your 2020 Jeep Cherokee is no exception.
The Core Issue: What Does Crank No Start Mean?
Your engine is trying. It spins the crankshaft. This is the cranking sound. But the engine does not fire up. Fuel and spark are missing. Or air flow is blocked. Something is preventing combustion.
Common Culprits For Your Jeep Cherokee
Several parts fail. This causes the issue. Fuel pump problems are frequent. Spark plugs can wear out. Ignition coils may fail. The starter motor might be bad. Air filters get clogged. Sensors can malfunction. A security system issue can occur.
Fuel System Woes: No Gas Reaching The Engine
Your Jeep needs fuel. The fuel pump sends it. If it fails, no fuel flows. You might hear a click. But no pump hum. This stops the engine. Check the fuel pump fuse. Also check the fuel pump relay.
Ignition System Glitches: No Spark To Ignite
Spark is essential. Spark plugs create it. They ignite the fuel. Worn plugs cause misfires. Ignition coils boost voltage. They send spark to the plugs. A bad coil means no spark. This stops combustion. Check your spark plugs. Inspect your ignition coils too.
Airflow Obstructions: The Engine Can’t Breathe
Engines need air. Clean air is best. A dirty air filter blocks air. This starves the engine. It cannot run properly. Check your air filter often. Replace it when it is dirty. Ensure the air intake is clear.
Sensor Surprises: The Brains Of Your Jeep
Sensors monitor everything. The crankshaft position sensor is key. It tells the computer when to spark. A faulty sensor stops the spark. The camshaft position sensor is also vital. It helps time the fuel injection. Check these sensors for damage. Look for loose connections.
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Common Culprits: Fuel System Woes
Your 2020 Jeep Cherokee cranks but won’t start. This often points to the fuel system. This system delivers gas to the engine. Problems here stop your Jeep dead. Let’s explore common fuel system issues.
Fuel Pump Failure
The fuel pump sends gasoline from the tank. It pushes fuel to the engine. A failing pump stops fuel flow. Your Jeep needs fuel to run. A bad pump means no fuel. This prevents your Jeep from starting.
Clogged Fuel Filter
A fuel filter cleans gasoline. It removes dirt and debris. Over time, the filter gets dirty. A clogged filter restricts fuel flow. Less fuel reaches the engine. This can cause starting problems. Your Jeep might struggle to begin.
Bad Fuel Injectors
Fuel injectors spray gas into cylinders. They atomize the fuel. This creates a fine mist. Bad injectors leak or clog. They might not spray fuel correctly. This starves the engine of gas. Your Jeep won’t start without proper fuel.
Ignition System Issues
Your Jeep Cherokee might crank. It just won’t start. This often points to ignition system problems. The ignition system creates the spark. That spark ignites the fuel. A faulty part stops this process.
Spark Plugs And Coils
Spark plugs start the fire. They need a strong spark. Ignition coils make that spark. They send power to the plugs. Worn plugs fail to ignite fuel. Bad coils cannot create spark.
Crankshaft Position Sensor
This sensor tells the computer. It tells when the engine turns. The computer needs this signal. It needs it to time the spark. A bad sensor gives wrong data. The computer then sparks at wrong times. The engine won’t start.
Camshaft Position Sensor
This sensor also monitors engine timing. It tracks the camshaft’s movement. The computer uses this data. It works with the crankshaft sensor. This ensures precise fuel injection. It also times the spark correctly. A faulty sensor stops the start.
Air Intake Problems
Air intake issues can stop your 2020 Jeep Cherokee. It cranks but won’t start. This system feeds your engine air. Problems here starve the engine. This prevents it from firing up.
Dirty Mass Airflow Sensor
Your Jeep has a MAF sensor. It measures air entering the engine. Dirt can coat this sensor. This gives false readings. The engine computer gets bad data. It cannot mix fuel correctly. This causes starting troubles. A dirty MAF sensor is common.
Clogged Air Filter
The air filter stops debris. It keeps dirt out of the engine. Over time, it gets dirty. A clogged filter restricts airflow. Your engine needs air to run. Too little air means no start. Check your air filter often. A clean filter is vital. It allows proper air intake.
Electrical Gremlins
Sometimes, your 2020 Jeep Cherokee cranks but won’t start. This can feel frustrating. Strange issues often hide in the electrical system. We call these “electrical gremlins.” They cause unexpected problems. These gremlins can leave you stranded. Let’s find them.
Battery And Alternator Checks
Your battery powers everything. A weak battery causes trouble. It might not have enough power. Check battery terminals for corrosion. Clean them if they look dirty. A bad alternator also stops the car. The alternator charges the battery. Test your battery’s voltage. Have your alternator tested too. These are common starting points.
Wiring Harness Defects
Wires connect all car parts. A damaged wiring harness causes issues. Wires can fray or get chewed. This breaks the electrical flow. Look for visible damage. Check for burnt smells. A faulty harness can be tricky. It needs careful inspection. Proper repair is important.
Fuse And Relay Problems
Fuses protect circuits. Relays act like switches. A blown fuse stops power. A bad relay does too. Find your Jeep’s fuse box. Consult your owner’s manual. Identify the correct fuses. Check them for breaks. Replace any blown fuses. Test the relevant relays. These are often overlooked.
Beyond The Basics: Less Common Causes
Sometimes, your 2020 Jeep Cherokee cranks but won’t start for reasons beyond the usual suspects. These less common issues can be tricky. They often require a deeper look. Let’s explore these less obvious culprits.
Timing Belt/chain Issues
Your engine needs precise timing. The timing belt or chain synchronizes parts. A broken belt or chain stops the engine. It will crank but not ignite. This is a serious problem. It needs immediate attention. Mechanics must inspect this system.
Vacuum Leaks
Air gets into the engine. Vacuum hoses manage this air. A leak lets in extra air. This disrupts the fuel mixture. The engine needs a specific air amount. Too much air prevents starting. Check all vacuum lines. Look for cracks or loose fittings. A small leak causes big trouble.
Ecu/pcm Malfunctions
The ECU is the car’s brain. It controls engine functions. The PCM is similar. It manages power and systems. A faulty ECU/PCM cannot signal. It won’t tell the engine to start. This is a complex issue. Diagnosis requires specialized tools. A bad computer stops everything.
Troubleshooting Steps
Your Jeep Cherokee cranks but won’t start. This is frustrating. Let’s find the problem. These troubleshooting steps help. We will investigate common causes. Follow these checks carefully. You can identify the issue.
Listen For The Fuel Pump
Turn the ignition key. Do not start the engine. Listen carefully. You should hear a hum. This sound comes from the fuel pump. It primes the fuel system. The hum lasts a few seconds. No hum means a fuel pump problem. The pump might be failing. Or, it may not be getting power.
Check For Spark
Spark ignites the fuel. Without spark, the engine won’t run. You need to check spark plugs. Remove a spark plug wire. Insert a spare spark plug. Ground the plug against the engine. Have someone crank the engine. Look for a strong blue spark. No spark indicates an ignition issue. This could be the coil pack or crank sensor.
Scan For Diagnostic Trouble Codes (dtcs)
Modern vehicles store fault codes. An OBD-II scanner reads these codes. Plug the scanner into the port. The port is usually under the dash. Turn the ignition on. The scanner displays DTCs. These codes point to specific problems. A mechanic can interpret these codes. They help pinpoint the exact failure.
When To Call A Professional
Sometimes, your Jeep Cherokee needs expert help. Don’t guess. Call a pro. They have the right tools. They know the complex systems. This saves you time and money. It prevents further damage.
The Limits Of Diy
You checked the battery. It is good. You tried starting fluid. Still no luck. Some problems are beyond basic fixes. Fuel pump issues are tricky. Ignition system faults are complex. Engine sensors can fail. These need specialized knowledge. A professional mechanic can diagnose them. They have diagnostic equipment. This equipment reads error codes. These codes point to the problem. Don’t risk making it worse. Trust the experts.
When Safety Is A Concern
Fuel system work is dangerous. Ignition systems carry high voltage. Working with these parts can be risky. You could get hurt. You could damage your Jeep. A professional has safety training. They use proper safety gear. They understand the risks. Let them handle dangerous repairs. Your safety is important. Your Jeep’s safety too.
Complex Electrical Systems
Modern Jeeps have complicated electronics. Wiring harnesses can be a mess. Computer modules control many functions. Troubleshooting these takes skill. A technician can trace wires. They can test modules. They understand the electrical diagrams. This helps find the root cause. Don’t get lost in the wires. Call a Jeep specialist.
Persistent Starting Issues
Your Jeep cranks but won’t start. You tried several things. The problem remains. This suggests a deeper issue. It could be internal engine damage. It might be a timing problem. These are serious repairs. A professional can perform these. They have the experience. They have the right parts. Get your Jeep running again. Call a qualified mechanic.
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Frequently Asked Questions
Why Won’t My Jeep Cherokee Start?
This issue often points to a few common culprits. It could be a problem with the fuel system, like a clogged fuel filter or a weak fuel pump. Alternatively, it might be an ignition system issue, such as faulty spark plugs or a bad ignition coil.
What If My Jeep Cranks But Won’t Fire Up?
If your 2020 Jeep Cherokee cranks but won’t start, check your battery connections first. Ensure they are clean and tight. Then, consider if you’re out of gas. A faulty fuel pump or a clogged fuel filter are also frequent causes.
Could A Dead Battery Cause This Problem?
While a completely dead battery prevents cranking, a weak one can cause this. A weak battery might have enough power to turn the engine over but not enough to ignite the fuel. Check your battery’s voltage and connections.
Is The Fuel Pump A Common Culprit?
Yes, a failing fuel pump is a very common reason for a Jeep Cherokee to crank but not start. The pump delivers fuel to the engine. If it’s not working, the engine won’t get the fuel it needs to run.
Conclusion
Your Jeep Cherokee cranks but won’t start? Don’t panic. You have options now. Check the battery first. Then inspect the fuel pump. Spark plugs are another common culprit. Sometimes, it’s just a simple fix. A mechanic can help too. Get your Jeep running again.
Enjoy your rides soon.
