try running some fuel cleaner through and some premium gas. maybe you got some bad gas. also clean the throttle body and/or maf sensor?

 

Thank for the suggestion. I'll give it a try.

 

Never heard this happening on a car in this forum. Never mind two cars.
Are you buying quality gas?
Suggest you try a couple of cans of dry gas in each in case you have water in your tank.

 

Thanks for your reply. Yes, gasoline is from reputable stations. My current believe is that Toyota has some sort of a software problem in the engine and transmission controls because the drive trains are similar. but I have no way to prove it. The very recent fuel pump recall on the 2019 did not fix the problem.

 

The odd part of this is it's happening on two vehicles, 7 years apart and 2 re-designs. It makes me think it could be something you are doing as the driver. One question is are you a "two foot" driver?

The fact that the "Check Engine" light comes on but doesn't register a code is odd. And this is not a "gas" issue.

Once the car gets going, do you have any other drivability issues like hard shifting, hesitations, etc? Is it more of a problem when the cars are cold? How many miles do you have on each car? Are they up to date on maintenance?

I agree it could be an issue with software. I would do a few basic items like change the air filter, clean the MAF, and put a bottle of Techron in the fuel tank. I would try an independent mechanic to see their opinion. If he/she has experience with Camrys even better. Also consider a code reader that can give you real time information. Since it's happening to both Camrys, it might be worth it.

Good luck.

 

The odd part of this is it's happening on two vehicles, 7 years apart and 2 re-designs. It makes me think it could be something you are doing as the driver. One question is are you a "two foot" driver?

The fact that the "Check Engine" light comes on but doesn't register a code is odd. And this is not a "gas" issue.

Once the car gets going, do you have any other drivability issues like hard shifting, hesitations, etc? Is it more of a problem when the cars are cold? How many miles do you have on each car? Are they up to date on maintenance?

I agree it could be an issue with software. I would do a few basic items like change the air filter, clean the MAF, and put a bottle of Techron in the fuel tank. I would try an independent mechanic to see their opinion. If he/she has experience with Camrys even better. Also consider a code reader that can give you real time information. Since it's happening to both Camrys, it might be worth it.

Good luck.

Thank you, I appreciate your replay and suggestions. as for being a "two foot" driver, the answer is yes and no. In traffic, I tend to position my left foot above, but not on the brake peddle. I do not ride the break. When the problem occurs, my foot has no been on the brake. I can see where that could confuse the software. On the open road, my left foot is on the floor. My wife suggests that I'm the problem..... and she is smarter that I am!

Once the car gets going, it runs well. It matters not whether the car is hot or cold. There are not additional problems until the next occurrence. Both cars have been dealer maintained except for brake shoes and tires. Both cars are up to date on maintenance.
. .
As for a real time code reader, is one better than the others?
Thanks again

 

Post a video of it happening on both vehicles

 

Back in the day, they called that problem "hesitation".
Freakin' dangerous when you're making a left turn, with oncoming traffic, and the car tries to stall out on you.

 

Stalling isn't common on any modern vehicle let alone a Toyota. To have it happen to two cars you own from different generations with different power trains is highly unusual.

Not criticizing you but the only thing the cars have in common is the owner. My guess would be the gas you're buying is contaminated. Do the stations you go to have a lot of traffic?

 

That's weird. When there is check engine light is on, there should be a code. I never had a car without the code when CEL is lit up.

 

I own two Camry XLE's, a 2012 and a 2019. Both exhibit this problem. It is an intermittent problem but it has happened dozens of times. Occasionally, when I press on the accelerator from a stop, the car begins to move and then the engine almost stalls (almost stops). The check engine light comes on. The car slowly coasts without power. Recovery scenario 1: If I take my foot off the accelerator the, the engine goes back to idle. If I the press the accelerator gently, the engine begins to speed up and the car begins to accelerate. The whole episode take between 7 and 15 second. Recovery scenario 2: If I fully press the accelerator, engine continues to hesitate for 7 to 10 second and then then begins to speed up and the car begins to slowly accelerate. No service code is recorded or displayed, so the Toyota dealership is not interested.

Yes, just ask Toyota techs, it is built in to their computer control of the accelerator, it is definitely dangerous but they ignore it. Does anyone know how to fix it with a work around?

 

I wonder if this could be an issue with the parts or fluids you are using to maintain the vehicles? Two camrys with two different engines doing the same thing.. I'm sure there are similar safety protocols built into the computers.. it's important to make sure you're using high quality filters, spark plugs, oil and fuel also I like running the techron treatment every so often.. even better if you run 2 treatments back to back.. also over time the PCV gets clogged and doesn't properly ventilate the engine..

 

This statement makes a lot of sense. It is unlikely the same problem is occuring in 2 different cars owned by the same person due to a defective component.