Problem w/ my car suddenly jolting and decelerating?

I got a 2002 Honda CR-V 3 weeks ago. As I was driving on the freeway last week, my car suddenly jerked and started decelerating, then after 5-10 seconds, it sped up again, then did the same thing. Luckily I arrived home but then the check engine light came on. What could be the reason for this?

It would be worth your while to have someone read the engine codes. Places like Pep Boys and AutoZone will do that for free.

Without anymore information… I might guess that you had a bit of contaminated fuel that had to work its way through the system. But it could be something more serious.

How about going to an auto parts store and getting the codes read. Then post the actual codes here and we can try to help.

Read the trouble codes with a scan tool. Could be a bad speed sensor.

Top guess is the ignition switch. Honda had serious problems with them in the early 2000s. If the oil pressure and charging system lights do not come on after two or three seconds of power loss (of course it will happen again) you know it is the switch. The jerk, rather than a fraction of a second powering down, make me think ignition rather than fuel.

I agree it is useful to see what the check engine light is about as well. If there's a crank sensor code you have a hot suspect.

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