Driving on a highway for 120mph for 4-5 minutes then the car losses power and slows down not passing 4000 rpm. My question is that a normal safety feature? Is there anyone who experienced this before or has honda mentioned it as a safety measure or is there a faulty aspect in my car? Iam not talking about the speed limiter, but rather the car slowing down even while on S gear to not letting me pass 4000 rpm so as not to maintain the 110 or 120 mph speed. Then 5-6 minutes after i return to D drive then place it on S gear again it speeds up and then the scenario above repeats itself. Is this normal?? Anything iam not understanding about the turbo charge or nature of this car. Its a model 1.5 cvt accord exl 2022
Power loss at high speed
Omohonda
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Driving on a highway for 120mph for 4-5 minutes then the car losses power and slows down not passing 4000 rpm. My question is that a normal safety feature? Is there anyone who experienced this before or has honda mentioned it as a safety measure or is there a faulty aspect in my car? Iam not talking about the speed limiter, but rather the car slowing down even while on S gear to not letting me pass 4000 rpm so as not to maintain the 110 or 120 mph speed. Then 5-6 minutes after i return to D drive then place it on S gear again it speeds up and then the scenario above repeats itself. Is this normal?? Anything iam not understanding about the turbo charge or nature of this car. Its a model 1.5 cvt accord exl 2022
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Are you trying to blow up the L15? Honda has implemented a digital limiter (governor) on almost all their vehicles. I wouldn’t be surprised that the 1.5T Accord is limited to 120 MPH.
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Not trying to blow up anything…nor am i exceeding the 120 mph as the limiter already prevents it…i just want to understand why this is happening? Noting that i had a 2009 1.6 cvt civic that used to run at high way for max speed of 110mph constantly for over 30 mins without doing the same behaviour..so why does that happen with the much newer advanced accord? Is there something faulty?
It's probably getting too hot. How much boost is needed to maintain 120 in the L15? I bet enough that that the factory intercooler can't keep up. Thus you lose power since the car is trying to not blow the engine from knock.
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Thanks for your comment..I honestly don’t know how much boost is needed..do you know how i can figure that out? I mean is there a reading on the screen info that i can check while driving at this speed that would tell me? The temperature though seems quite fine at this speed no major heating spike indicated
IDK, I don't own one of these cars. There should be a boost gauge option somewhere. I'm just speaking from experience of having a boosted car.
It's not the engine coolant getting too hot, it's the intake air temperature getting too hot. That information would not likely be presented to the driver without a 3rd party interface like Ktuner.
It's not the engine coolant getting too hot, it's the intake air temperature getting too hot. That information would not likely be presented to the driver without a 3rd party interface like Ktuner.
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Thanks appreciate your feedback
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Yeah, a lot of modern turbo engines are only capable of producing their max rated power for a few minutes at a time before they have to reduce boost due to turbocharger or intake temperature. I recall the Subaru Ascent having issues with this, asking for 260 HP out of a 2.4 liter engine in a vehicle that heavy was too much and it could almost never actually provide that much power due to temperature issues.
Hondas aren't German cars, nobody in the design team is testing to make sure they can actually sustain 120 mph.
Hondas aren't German cars, nobody in the design team is testing to make sure they can actually sustain 120 mph.
This is good information, just in case a person needed sustained max speed. Thanks.
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So do you think this normal feature that this drop happens by design? I was looking to see if that speed can be sustained for a 10 min drive on the highway but it seems unlikely
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It's not by design, but the engine is limiting power to avoid damaging itself. Also, assuming your profile is accurate, you are in Egypt, which is quite a bit hotter than the North American market the car was designed in. This may not be an issue at all in a cooler environment. If you get some way to figure out why it's limiting power, you can probably resolve the issue by installing a larger intercooler or something.
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2.0 accord can it at the speed limiter for longer period of time, from what ive seen since working at honda is the 10th gen can sit at high rpm for a long period of time. the hybrids are known for blowing head gaskets due to this reason and the 2.0 accord crack their head too.
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