A Jeep Wrangler shuts down while driving is detrimental to your safety. If you happen to be on a busy highway, such an eventuality could gamble your life. You could stall the traffic and be the brunt of everyone’s bad day. Or another vehicle could ram into your unexpected halt. It is not possible to control a vehicle that has shut down without getting out and pushing it yourself. Because the brakes and the steering wouldn’t be operational! You would be left in the weak hands of luck.
It is important that you repair this problem in your Jeep before heading out again. While there are some common reasons that are usually behind the Jeeps that shut down, there could be deeper problems that can only be diagnosed by a professional mechanic.
Know the reason why your Jeep shuts down while driving
Some culprits are quite common behind every Jeep that shuts down. These common culprits may or may not be the reason your Jeep poses you such danger in the middle of the way. It is not wise to drive your Jeep again until this issue has been taken care of. Understand that such a vehicle could easily be a part of an accident. Look for the following signs to understand why this problem appears.
Check whether your vehicle is out of fuel
Your engine requires some essential things to keep running properly. The whole operation of your Jeep’s engine is a result of the reaction between air, fuel, and spark. If your Jeep’s engine abruptly dies while smoothly running and without any previous warning, it is possible that there is an issue with the fuel.
Insufficient fuel is the most common reason behind this sudden shut down. You should always remember to check your fuel tank before you head out. Another reason could be an inefficient fuel gauge. An inaccurate fuel gauge could show a full engine when the engine is actually empty. Note that if your Jeep’s engine emits a hollow sound when started, it is probably empty and will halt at the earliest occasion.
Check the adequacy of your fuel pump or filter
Your Jeep Wrangler may be running at a shortage of fuel because of an inefficient fuel pump. A fuel pump’s duty is to send fuel at high pressure into the fuel rails. If the pressure is insufficient, the lower fuel pressure would be unable to properly atomize the gasoline. Worst of all, a fuel pump is not directly monitored by the Jeep engine’s computer. So your check engine light will not be activated even when your vehicle has started shutting down.
The best way to examine this problem is by turning on the engine key and listening carefully to the engine sound. The whining noise emerges from the fuel pump that primes your Jeep’s fuel system. In case you don’t hear any noise, it is probably because your fuel pump has deteriorated. But you need to be quite sure that you don’t hear any noise before arriving at any conclusions.
If you are sure that you don’t hear any noise, check the fuel pressure at the fuel rails. Insufficient pressure at the fuel rails will ascertain the insufficiency of your fuel filter. Such a problem in your fuel pump could cause your Jeep’s engine to randomly die on the road.
Examine your Jeep’s battery cables
Check the status of your Jeep’s battery cables to make sure that they are free of debris. Also ensure that these cables are properly bolted to the battery posts. Follow the course of the black ground cable to find out where it is connected at. This cable should be aptly secure and there should be no signs of rust or corrosion. It is important that a solid and dependable ground connection is maintained at all times.
Make sure that your engine’s chassis ground is safe
Your Jeep’s engine requires a strong ground to the chassis so that the various electrical systems can function without errors. In case these cables get corroded, you’ll encounter serious problems like misfiring and slow starts. Your engine could also suddenly die while driving. This area is the common source of many electrical complications.
Check if your alternator is good
Your vehicle’s alternator is responsible for charging your battery. A properly charged battery keeps your vehicle running. An incapable alternator would cause problems in the power supply of the battery. Your Jeep’s battery could frequently run out of power. This is also amongst the common reasons behind a Jeep that shuts down.
Examine your Wrangler’s sensors
The sensors in the camshaft and the crankshaft serve to guide the engine regarding the location of the cam and the crank. In their 360 degree revolutions, they constantly collect and supply this data. Even a momentarily delay in the reporting of this data could create deep trouble for your vehicle.
This delay could cause delay in the firing of spark plugs so your vehicle would stop running abruptly. It is also possible for the mass air flow sensor to become inefficient. Although, any problem in these sensors is usually signalled by a trouble code.
See whether there is an issue with clutch release
This is a common occurrence in Jeep Wranglers with manual transmission. If you take your foot off the clutch while changing gears and while not supplying it any gas, a momentary shut down is bound to happen. This problem also appears when you try to shift a gear too high without any necessary RPMs to offer it support. When this happens, take your clutch in a neutral position and start the engine again. This is not a serious problem.
Make sure that your fuel mixture is adequate
It is possible that your fuel mixture may be inadequate. This usually happens when you employ low-quality fuels to run your Wrangler. It is essential for the fuel mixture to be sufficiently rich so that your vehicle can run smoothly.
There could be a problem in your coolant sensor
Some Jeep Wranglers have a coolant sensor. Any overheating of your vehicle could trigger this sensor and cause your vehicle to abruptly stop. This is a precautionary measure taken by your engine to prevent any engine damage. However, this sensor could at times be faulty. Your engine may be receiving wrong signals and shutting down without any real problem.
Check if your distributor cap is corroded
A distributor cap covers the distributor and serves to send voltage to the spark plugs. In case your distributor cap is corroded, your vehicle could get disturbed during acceleration and even shut down.
See whether you car shuts down while braking
There could be some other reason behind a car that shuts down when you press the brakes. The most common cause is a vacuum hose blockage in the brake booster. Another reason could be a leaking master cylinder. It is also possible that there is a leak in the ABS system. Whichever may be the case, it would be quite difficult to assess without proper professional diagnosis.
Take the following steps when your Jeep shuts down while driving
Your first and foremost step should be to ascertain that this problem hasn’t arisen out of a simple manageable issue. Check whether your fuel tank is full and whether you apply your clutch correctly in your manual transmission vehicle. Once you have assessed these simple reasons, head to the more complicated problems backstage.
If you know that your battery is older than three years and there are no signs of an alternator failure, the issue could be rooted in your Jeep’s battery. In this case, you’ll need to recharge your battery with the help of a similar engine.
In some cases, the Wrangler shuts down only on inclines. In such a situation, add an injector cleaner to your engine. You could also replace the air filter in your engine if it turns out dirty on assessment. If none of these tricks are able to restart your engine, you are bound to seek professional help.
In any case, you shouldn’t drive out a Jeep Wrangler that shuts down until this issue has been properly corrected. An unprecedented shut down of your Jeep in dangerous situations could have unforeseen consequences. Once your Wrangler starts again after shutting down, drive it to the mechanic’s shop.
Conclusion – Jeep Wrangler Shuts Down While Driving
A Jeep Wrangler that abruptly shuts down without a prior warning could put the driver at immense risk. This is because you’ll have no time to move sideways or away from the fast hounding traffic. It is best to get this issue resolved as soon as possible. It is also suggested that you maintain your vehicle properly so that such an issue never arises. See that you are using quality fuel and get your vehicle’s batteries checked regularly. Such an issue should not arise in a vehicle that has been properly cared for and looked after.