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Toyota mass air flow sensor problems4/8/2023 It's also suspicious to me that my vehicle started doing this about 2 weeks prior to a huge safety recall coming out in regards to fuel pumps. This is because the ECU will detect an out of range value coming from the MAF sensor and the check engine light is its way of letting you know that. A bad mass air flow sensor will usually trigger a check engine light. Check Engine Light appearing on the dashboard. Here are some of the most common bad mass air flow symptoms that you will typically come across. Before denying me anything, they should be willing to at least investigate and look at my vehicle. Therefore the most common signs of a bad mass air flow sensor usually appear in the form of an engine that is performing badly. My vehicles symptoms are the same as what the recall has stated happens. My Toyota dealership, should not just be assuming that this couldn't be correlated with faulty fuel pump. This seems similar to the issue Subaru was having with their air bags. I called Toyota, but they are claiming that only the newer Toyotas are affected, but on the recall list it goes back to 2013 in different models. Your Car Hesitates or Suddenly Jerks Forward While. 3 Symptoms of a Bad Mass Air Flow Sensor. They tested fuel pump and it's only putting out 20psi instead of 40. When they dont there can be some serious drivability issues. ![]() Had to have my vehicle towed to different shop (to trusted mechanic) they have found after replacing the battery and a mass air flow sensor, that it is truly in fact the fuel pump. I fixed that, and then the same issue starting occurring again. ![]() Upon looking under the hood, found that the air intake filter was left off. Once I received my vehicle, it continued to do the same thing after 2 days. ![]() They found mice nest in intake manifold, knock sensor was found to be chewed, and replaced. Thought it was fuel pump due to recent recall - specifically asked if it could be that and was told no. Truck was in Toyota shop in vermont for stalling of vehicle.
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