Question about 2004 Mazda 3

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Car hesitates at different rpms in all gears on my 2004 mazda 6

2004 mazda 6 3.0, have acceleration problem. car hesitates at different rpms in all gears. Have changed throttle body,pcv valve and mass air flow sensor. I have an AEM Mazdaspeed intake installed and never had a issue with this mod in 4 years. The check engine light never came on, but I have a code for the VAD sensor the shows up when I get the car scanned. This is due to the fact that I disconnected the sensor as per the instruction when I installed the intake. Do you think I might have a bad coil or poor plugs. I have 80,000 mile on it now, and I know the plugs should be changed around 74,000. please help.

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Hi, it might very well be the electronic engine control system that is malfunctioning, among other probable causes. I'm not there in person, but I can help you go through the most probable causes of this accleration-hesitation problem that you have. In fact, here's a very good, handy diagnostic article exactly on your issue, detailing the six most probable causes:
http://yourhandymanzone.com/Your_Handyman_Zone_How_To_Pages_Vehicle_Car_Zone_Cars_Trucks_Vans_Engine_System_Engine_Hesitates_When_Accelerating.htm
Go through these to definitely solve your problem.
Brad

Posted on Jun 01, 2009

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Posted on Jan 02, 2017

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These details will help.

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