Vw 2012 Jetta 20 Stalls Randomly and Wont Start Up Again

If your Volkswagen Jetta is shutting downwards while driving, it's a real safety hazard.  Vehicles are a lot harder to control without power brakes or steering.

Volkswagen Jetta Shuts Down When Driving: Top Causes

Direct below is a listing of the most common reasons why your Jetta would randomly dice while driving.  It may aid yous in your diagnosis.  But, before taking a await at anything, is the check engine light on?  If it is, you'll want to start with whatsoever problem lawmaking you get from an OBD2 scanner.

Parts stores can scan it for y'all if you don't have access to a scanner.  But we don't recommend driving anywhere until your Jetta is fixed, since dying at the incorrect fourth dimension can crusade a collision.

one. Out of Fuel

Your engine needs three things to run properly; air, fuel, and spark.  If your engine is running fine and then it merely all of a sudden dies, i of these three things was abruptly taken away.  It's usually fuel.

The nearly mutual reason that a vehicle shuts off when driving is a lack of fuel.  The most likely cause is an empty fuel tank aided by a fuel judge that's not as accurate as it looks.  Fifty-fifty if it says there is fuel in at that place, bang on the tank.  If information technology makes a hollow sound, it's probably empty.

2. Fuel Pump or Filter

Another common reason that your Jetta may be starving for fuel is a bad fuel pump.  The fuel pump is responsible for sending highly pressurized fuel to the fuel rails.  The engine can die if the fuel pressure level is non high enough to properly disintegrate the gasoline properly.

The fuel pump is often not monitored by the engine'south reckoner, which means information technology doesn't actuate the cheque engine lite when you are trying to figure out why the vehicle it is randomly dying.  This is the best place to showtime.

If the engine isn't starting, plough the key to the on position and listen really advisedly.  You lot should hear a whining noise.  That'southward the fuel pump priming the fuel system.  If yous hear nothing, that is a strong indication that the fuel pump is bad.  Since the fuel pump is in the tank, you lot may want to become a 2d set of ears so yous can be absolutely certain you don't hear it.

If you don't hear information technology at all, yous should manually cheque the fuel pressure at the fuel rails.  If it is non as high as information technology should be you lot either have a bad fuel pump or fuel filter.

The fuel pump may be going out sporadically.  This would mean that it'll die on the road, and and then fire back up again fifty-fifty a few seconds after.

iii. Battery Cables

Check the bombardment cables to ensure that they are complimentary of droppings and are bolted to the battery posts properly.  Follow the blackness ground cable to whatever it is continued to.  Make sure that it is secure and at that place's no corrosion or rust that could exist keeping it from making a solid ground connection.

iv. Engine to Chassis Ground

The engine needs a strong footing to the chassis in society for your Jetta's diverse electrical systems to work.  If that cable is corroded, in that location could be issues such as misfiring, deadening/no starts, or even the engine dying while driving.  This is a common cause of many "gremlins".

5. Bad Alternator

The alternator is responsible for charging the battery, and keeping your Jetta running.  If the alternator goes bad, the vehicle will run off of the power supply in the battery (which is there more often than not for starting the vehicle and as a backup reserve).

Once the bombardment has been depleted, the ignition arrangement will no longer be able to burn down properly. You should see either a bombardment calorie-free or alternator light long before the engine dies.  If you didn't encounter information technology, it's highly unlikely that the alternator or battery is at fault.  If yous did come across the alarm low-cal, have the alternator and bombardment tested at the parts store.  Replace them as needed.

6. Effect With Sensors

The crankshaft and camshaft sensors are responsible for telling the engine where the creepo and cam are located in their 360° revolutions.  If they terminate reporting this data, even momentarily, the vehicle will non know when to fire the spark plugs and it'll stop running.

The mass air flow sensor can also go bad.  These sensors should trigger a trouble code if they have a problem through.

Decision:  Volkswagen Jetta Dying While Driving

In the absence of a cheque engine calorie-free, have a good hard look at the fuel pump.  If that'due south not the upshot, we recommend having an experienced mechanic accept a look at the problem.  They'll need to record the telemetry from the OBD2 arrangement when the motorcar does it again.  Then, they'll be able to decide which part of the vehicle has the problem.  This is a DIY site, we hardly e'er throw out the mechanic recommendation.  This can exist tough to track

If there's annihilation that you would similar to add that could help the next person with their Jetta, please exit a comment below.

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Source: https://www.700r4transmissionhq.com/volkswagen-jetta-shuts-off-when-driving/