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Q: Issues with acceleration, no gradual change of speed

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Recently, my car has been very slow to accelerate. This happens when I drive uphill esspecially. The other day while I was driving, the car would stop moving right away, each time I let go off the gas pedal. It would make jerking movements when I gave it gas again, instead of slowly accelerating. After that day, it's been running fine with no issues. I was told the problem is caused by a worn solenoid purge valve. What do you think? Could that be the cause? Thank you in advance.

A: The engine may be having an issue with the ...

The engine may be having an issue with the variable intake runner control is sticking or binding or the variable valve timing is sticking. Both can be tested and diagnosed by a mechanic with the proper scan tool that can actuate the systems to test their operations. The intake control valve or VVT solenoid may need to be replaced. If you want to get this fixed, have your vehicle inspected by a certified mechanic who will be able diagnose your acceleration issue and make the necessary repairs to get your car running normally again.

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