Understanding the No-Start Condition
These no-start issues can be quite annoying for any owner of a vehicle, particularly because they can be completely unpredictable in their assault.
Here, we’re looking specifically into a problem that many Jeep Wrangler JL owners, especially 2018 and newer models, have encountered.
In this post, we describe the methods used to fix the no-start problem, outlining the sequence of events as they evolved in one of the most recent cases regarding this.
Initial Assessment
The subject of interest is a 2018 Jeep Wrangler Sahara, which has experienced no prior major problems only to be parked for a short period and is attempting to start once again.
The car owner simply put the ignition key into the starter switch without any peculiarities in the previous processes and incidentally, the Jeep will not start hence the surprise.
Anything else that may be attempted to restart this car and everything simply ends up with a bang in the sense that all the TB should be able to hear is the thump of TB trying to crank this particular vehicle.
Which in modern times is in many ways gone suggests that there might be a problem associated with fuel, particularly when other elements seem to work fine.
Symptoms Observed
At the commencement, the vehicle would spin the starter but would not start at all. It must be emphasized from the get-go the starter was active but the engine did not turn on.
This is an important point as it helps focus on the basic reasons behind the problem.
Checking the Battery
Nonetheless, even without going so far as to look for the problem, it is advisable to consider the battery first.
A defect-free battery is very important for the running of a vehicle and can be responsible for several starting problems.
The ideal battery volt reading when the ignition is off is around 12.5 volts.
In this instance, the battery, which was subjected to testing, displayed a healthy reading of 12.76 volts therefore eliminating this component as a potential problem.
Identifying the Fuel Issue
Fuel delivery was the next possible line of inquiry since the battery’s condition proved to be good. Fuel tank problems in most instances are the absence of a fuel pump or its relay.
Considering that the vehicle had only 52000 miles on it, it was more likely that there would be a relay malfunction than a fuel pump.
Examining the Relay Box
The usage of batteries has been thrown out meaning that the relays situated under the hood will now be the next focus. As to get to the relay box, the next action was to reach it.
One of the benefits of the current Jeep Wrangler, along with other vehicles, usually provides a chart that carries descriptions of the fuse.
Even the relay makes repair work simpler as compared to without such a manual.
Locating the Fuel Pump Relay
Fuel Pump Relay was labeled in the diagram as K2 while performing the examination. This relay was positioned in the second position in the column of relays.
To determine whether the relay was intact, it was quickly exchanged with another relay that was not performing vital functions. This time, an HD to accessory relay was used for the evaluation.
Swapping the Relay
Fuel Pump Relay was labeled in the diagram as K2 while performing the examination. This relay was positioned in the second position in the column of relays.
To determine whether the relay was intact, it was quickly exchanged with another relay that was not performing vital functions. This time, an HD to accessory relay was used for the evaluation.
Final Steps and Recommendations
The next project was to find a new relay to prevent the owner from touching the batteries again.
The client provided a new relay for installation into wires that had been interchangeable owing to faulting in the previous one.
Spare relays should be kept handy; one or two will usually do to reduce such instances, especially during emergency critical situations.
Conclusion
In conclusion, answering the no-start problem can be an uncomplicated affair provided you adhere to a logical sequence.
In this instance, proper wiring harness connections in conjunction with a thorough battery assessment assisted in identifying the cause.
Examination and forwarding of the signal relay made it possible to quickly resolve the concern.
Timing this specific procedure to the owners of Jeep Wrangler JL locks can save them precious time and possibly expensive repairs.
It is good advice to always go for the simplest explanation first and to seek a professional opinion if the problem still exists.
Additional Tips for Jeep Owners
- In the winter seasons, always take care to monitor the condition of your battery.
- Know where your fuses and relays are located.
- Place one or two spare relays within easy reach, just in case you need to make a quick repair.
- Record all complications and such phenomena to identify trends with time.
- Seek the driver’s manual of your particular model of vehicle for more precise fault-finding procedures.
Stay Tuned for More Insights
Don’t forget to come back to read more and more useful information about Jeep Wrangler and other vehicles including tips and troubleshooting ideas.
There is always something new to discover in this field. Be it a professional mechanic or a hobbyist, both will find something new every day.
FAQs
How do I know if my starter is bad on my Jeep Wrangler?
For your Jeep Wrangler, it is necessary to first check for one or more failure signs in your starter to find out whether your starter is bad.
One of the reasons can be a bad starter connected to it in case you hear some clicking noise after turning the key but the engine doesn’t start.
Secondly, if the engine starts but cranks very slowly or doesn’t crank at all, you may have a defective starter.
From the battery to the connection points, everything needs to be checked first as a hotspot weak battery can create starter problems.
Check for damage or corrosion on the starter. If you give the starter, a light blow with a hammer, and it works, then this may be an indication of wear.
In any case, the final decision as to whether the starter is healthy can be established by multimeter testing or by visiting the mechanic.
Why does my car have full power but won’t start?
If your car lights and radios all come on normally but the engine will not start, there are also several potential causes.
First, look at the battery terminals; they may be loose or poorly connected. Then the starter motor comes into play.
It can be defective or it may not be able to engage properly. The ignition system may also have a problem. A defective ignition coil or spark plugs; anti-starting base.
Fuel delivery systems may also be in this category; broken fuel filters or fuel pumps may stop the fuel from being delivered.
The last place to check is the vehicle’s computer or sensors as they might cause the vehicle to not start.
Finding the cause of the problem can be complicated; in general, it can be said that it can cause many similar failures, causing these elements to be turned in succession.
Why is my 2018 Jeep Wrangler not starting?
You could also be considering a few reasons why a 2018 wrangler will be hard to start. The first place to investigate and look for potential problems is the battery.
There might be a dead battery or the battery is too weak. Check the terminals as they may have a build-up of corrosion.
The next step is to inspect the starter motor. Failure of the starter motor is also a reason for engine cranking failure.
Look at fuses, carefully because a blown fuse can interrupt electrical systems. Make sure the key fob is working properly.
When a battery in the fob is flat, the vehicle does not accept it. Key turning, try to hear any sort of clicking sound. If there are, it might indicate a starter issue.
If these steps don’t resolve the problem, consider consulting a mechanic for further diagnosis.
Can you jump a Jeep with a bad starter?
Jumping a Jeep with a bad starter may not work as expected. A jump start typically provides a boost to the battery, but if the starter is faulty, it won’t engage.
The starter needs to be in good condition to turn the engine over, even with a charged battery.
If the battery is fine but the starter is the issue, the engine won’t start, regardless of how well the jump is done. It’s essential to diagnose the starter problem first.
If you suspect the starter is bad, consider replacing it or getting it checked by a professional. A functioning starter is crucial for proper engine operation.
What sensor causes a car not to start?
Several sensors can prevent a car from starting. The crankshaft position sensor is crucial. It monitors the position and speed of the crankshaft.
If it fails, the engine may not receive the necessary signals to start. The camshaft position sensor is another important component.
It tracks the camshaft’s position and ensures proper timing. A malfunction here can lead to starting issues.
Additionally, the mass airflow sensor measures air entering the engine. If it’s faulty, the engine control unit may restrict fuel delivery, hindering ignition.
Lastly, the throttle position sensor affects the air-fuel mixture. A defective sensor can disrupt starting as well. Regular maintenance helps prevent these issues.
Why is my engine cranking but not starting?
There are several potential issues if your engine is cranking but not starting. First, check the fuel supply. Ensure there’s enough fuel in the tank and that the fuel pump is functioning.
Next, examine the ignition system. A faulty spark plug or ignition coil can prevent starting. Additionally, consider the battery condition.
If it’s weak or dead, it may crank but lack the power to start. A malfunctioning sensor, like the crankshaft or camshaft position sensor, can also be a culprit.
Lastly, inspect the fuses and relays for any blown components. Addressing these areas can help diagnose the problem effectively.