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EricFromCT, Auto Technician
Category: Mazda
Satisfied Customers: 3809
Experience:  20 years dealership experienceASE Certified L1-L2
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CX9 hesitating and jerking when accelerating usually under

Customer Question

CX9 hesitating and jerking when accelerating usually under 40 mph. No indicator light but a appears to be getting more frequent
Submitted: 1 year ago.
Category: Mazda
Expert:  EricFromCT replied 1 year ago.

Hi. It is definately easier to diagnose with a check engine light on, but it is not impossible. And there may be a code stored in memory which does not mean the light has to be on. More than likely you have an ignition misfire from a coil. How many miles are on the car? And when was the last time a tune-up was performed?

Customer: replied 1 year ago.
Thank you; bought it used about 10 months ago, about 90k miles. Oil changes every 3k miles but have not had a tune-up.
Expert:  EricFromCT replied 1 year ago.

It may be worth replacing the spark plugs first. But then have the computer checked for any codes and possibly replace the coil or coils.

Expert:  EricFromCT replied 1 year ago.

Thanks for viewing my response.Thanks for allowing me to assist you. Please ask if you have any further questions on this. And also rate my assistance provided please using the 5 star rating method. Thank you.