2007 Toyota Camry power turns off and then quickly turns back on while driving and blows the main 120A(?) fuse

Asked by GuruCL35D Feb 19, 2019 at 06:06 PM about the 2007 Toyota Camry XLE V6

Question type: Maintenance & Repair

While driving my 2007 Camry down the road, the power turns off and then quickly back on a few times. When this happens, the car jerks pretty violently but afterwards the engine is still running, but the following have no power: all of the dash gauges except for the tach, radio, turn signals, (not sure what else). All of the trouble lights on the dash are on and I can drive the car, but as soon as I turn it off, it will not engage the starter when I push the start button again (even though the dash lights turn on).  It seems to blow the main 120A(?) fuse from the fuse block when this happens. They replace this fuse block, but it blows again within a few days after the jerky power on/off cycle happens again.

3 Answers

GuruCL35D answered 5 years ago

Interesting, this could be it. The only thing puzzling is that this has always happened while traveling at 20-25 mph on a smooth road and I don't need to restart the engine. I wonder if the restoration of power to the engine and the fact that the transmission is turning it over will "restart" the engine. Could this be true? The violent jerking sure seems like the engine is turned off and then back on.

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GuruCL35D answered 5 years ago

Wow, I think that was it! It took a while to get a replacement ignition switch, but I have been driving it for a last day or so and it hasn't acted up. Thanks so much!

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10

Jarod answered 5 years ago

Ed92626, I had a very similar problem with my '02 4-cylinder Camry where I would lose electrical power for a few seconds but my engine would still be running. It seemed to happen more often when I was taking sharp turns on my commute. I was going to switch out my alternator on some advice, but then stumbled across this thread when researching why my engine wasn't completely stalling out with the electrical. I bought the $20 switch instead of the $120 alternator and swapped it out (PITA), haven't had a problem in the last two days. Thanks a lot for saving me a headache and some cash!

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