Can bad coil cause stalling?
Engine Misfiring or Stalling If your engine misfires or stalls when you are idle or when you stop suddenly or accelerate, there could be a problem with your ignition coil. A faulty ignition coil can also cause the car to stall because of irregular sparks sent by the spark plug due to the faulty coil.
Can transmission problems cause misfire?
And, with the transmission locked to the engine, the converter clutch increases the load on the engine, while eliminating any cushion between the two. So, if a spark plug is worn, the extra load, combined with the leaner mixture can degrade the spark, causing an intermittent misfire.
What does bad coil sound like?
Engine misfiring will be seen in a vehicle whose ignition coils have failed. Trying to start the engine of such a vehicle will result in engine misfiring that sounds like a coughing, sputtering noise. A vehicle with a failed ignition coil will also result in vibration when it is idling at a stop sign or light.
What causes a Volkswagen Jetta to stall out?
Here’s more on Volkswagen Jetta bad fuel injector diagnosis. Not Enough Fuel – The fuel pump may not be able to provide the fuel pressure needed for the engine to run properly. When it asks for a lot of fuel, instead of taking off, it stalls out with the demand. This can be caused by the fuel pump or fuel filter.
How much does it cost to replace a spark plug on a Volkswagen Jetta?
An ignition coil or spark plug may fail unexpectedly resulting in an engine misfire and possible illumination of the Check Engine Light. Vehicles equipped with spark plug wires may also develop a misfire caused by a failed spark plug wire. The average cost for a Volkswagen Jetta Ignition Coil Replacement is between $129 -$143.
Why does my Audi A4 stall when I push the gas?
VVT Problem – Many modern engines are equipped with Variable Valve Timing. This allows for the engine to be in the “sweet spot” of power or economy depending on how hard you are pushing the gas pedal.
What causes a spark plug wire to fail?
Problem Description. An ignition coil or spark plug may fail unexpectedly resulting in an engine misfire and possible illumination of the Check Engine Light. Vehicles equipped with spark plug wires may also develop a misfire caused by a failed spark plug wire.