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Engine mis-fires and stalls

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2016 - 2017 Honda Accord
A member in Texas, United States

I have a 2016 Accord (Touring) 6 cylinder, with 23,000 miles. While at highway speed, the car will intermittently act as the cylinders are mis-firing, shake, appear to be about 1/2 power, and the engine check light flashes on and off. Once I stop and shut the engine off and re-start, it is ok. It also occassionally will stall at stop lights. There seems to be no rhyme or reason why or when this occurs. My local Honda dealer has been unable to diagnose the problem. They reset the sensors so any error codes could be reviewed, but no errors appear. They claim they have never seen nor heard of this problem ever, yet doing a simple Google search, it seems this is not uncommon. Anyone else have this problem? My dealer says the plugs, wires and sensors are functioning ok.

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Response from LectroFuel

11:43 pm February 18, 2018

Almost everyone has been in your situation where the dealer says they can't find a problem but you know there is a problem. When a dealer says they can't diagnose a problem, I go to a different dealer. If they diagnose and successfully fix the problem, I write the first dealer a 1 star yelp review, complain, and never use them again. There is also a possibility that your car qualifies for the Lemon Law after the dealer can't diagnose or fix a problem within a certain amount of visits.

My wife had a similar problem with her Odyssey at around 120k miles and I think it turned out being a bad cylinder head, so it was running on 5 cylinders. The CEL was flashing and the engine was idling harshly, but never stalled. It wasn't intermittent like your problem is and was easily diagnosable at our local repair shop. We replaced the idle control valve after it stalled on her twice. This was at 175k miles.

I'm in the process of this now with our 2005 Prius that we are trying to sell. We can't sell it until this annoying A/C problem is fixed. I've had the A/C repaired 4 times in the past 2 years. The compressor was $600 x2. They replaced it and it wasn't fixed. Then the condenser broke once and it broke again a day later. $3k total cost even though all of these parts have a warranty. And it's still broken. They suggest a new part is the problem every time I bring it in. I'm not paying a dime more or I'm reporting them to the BBB. This is despite the fact that my family bought two cars from them. I knew I should have stuck to the independent local shop.


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Response from wirenet29

8:51 pm November 10, 2018

I found the dealerships are out to make a profit and have maybe one good mechanic and a lot of beginners. I started off in 1962 working in a huge Cadillac dealership in Chicago. On the other hand, the independent repair shops have better mechanics but in some learning at your expense. What I do not like about independent shops is that they use aftermarket parts which have questionable longevity?


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