![]() Fortunately, it is easy for you to replace a fuel filter. If the fuel filter is clogged, the fuel entering the system will be insufficient, and the engine will shut down. Another reason could be that your fuel filter got clogged, so the fuel pump can’t pump fuel through it.Ī fuel filter is a small component whose only job is to clean the fuel that goes into the engine. The bad news is there is no bypass for a faulty fuel pump you have to fix it or buy a new one. If the fuel pump does not provide the right fuel to the engine, the motor will shut off, and you will be left stranded. Faulty Fuel Pump or Fuel Supply SystemĪ fuel pump supplies the engine with the correct amount of fuel. However, if your car is equipped with a crankshaft position sensor but not a camshaft sensor and you get a trouble code on it, you need to replace it. A faulty crankshaft position sensor may not cause the vehicle to stop entirely, though. You also have a camshaft position sensor on some car models, which the car uses if the camshaft sensor is faulty. The crankshaft sensor is necessary for your car engine to run on most car models. The most common reason a car dies while driving is a defective crankshaft position sensor. Here is a more detailed list of the six most common causes of why your car shuts off while driving: 1. While this list gives you a hint of the most common signs, it is far from all of them. It can also happen due to a bad alternator, ignition switch, empty fuel tank, or car engine sensor issues. The most common cause of why a car shuts off while driving is a bad crankshaft position sensor or issues with the fuel system. I appreciate greatly your reply and look forward to your thoughts/advice.Conclusion: Car Shuts Off While Driving What Causes A Car To Shut Off While Driving? However, we are not in a good position to get a second opinion - I guess we would have to pay for a tow to another garage.įinally, with the age of the car, we wonder whether it is better to sell/scrap the car and start anew than to invest $2500 or more in the 'new' engine, especially if the engine has a lot of miles or wear and tear. Unkind if this analysis is truly correct, which I hope the AAA status ensures. The skeptic in me thought that that may well be true and he might just have one in the shop right now - in my car. He also mentioned that it is difficult to find clean low mileage engines to put back into a car like this. However, he mentioned the low miles again and said he would look at it again with one of the other mechanics to get a better feeling for exactly what was wrong - I got the impression that there might be an answer better than the engine replacement (but perhaps that was just me being hopeful). ![]() He mentioned several scenarios whereby this could happen, and all sounded very bad. He also said something about engine pressure being released through the oil dipstick. The check oil light only came on when this problem occurred on the highway. He said nothing about there being no oil so I assume there was. We have not been changing oil every 2K miles or so, probably more like every 5K miles (last change done at Midas about 3 months ago). He said something about the lifters (?) Which have a small channel (?) Leading to them which can plug with sludgy oil. He (Stone's Premier Automotive, 11116 Shady Trail, Dallas, TX 75229 - this was the closest shop that AAA Texas found for the tow one online review which is very glowing) said something about Mazda's not being very good for standing for extended periods (this car has low miles but is used almost daily primarily for short trips moving the kids around it is parked in our driveway so does see the Texas weather - mostly the summer heat). They stated that something like this happening to a Mazda engine with so few miles is odd.
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