Hi everyone,
Bought a used low mileage mazda cx 7 2011 with the 2.5L automatic 2wd (non-turbo).
Everything is fine but acceleration is extremely sensitive and I'm pretty sure this is not normal.
What I mean by extremely sensitive is that when you press the accelerator pedal about 5% of the way, it's like the throttle has opened more than 50%.
If I press the pedal delicately I can get a smoother acceleration without the jump forward but then it's really hard to control to get a faster acceleration going.
So I can't really get a steady "middle" acceleration so to speak. Either slow or fast.
The vehicle otherwise drives and shifts smoothly in all gears without any issues.
I did some research online and it seems to come down to three things:
1) throttle position sensor
2) accelerator pedal
3) MAF sensor
Apparently there is also a case (I have not tried it yet) where if the battery is disconnected and the computer is reset, the problem goes away for a day and then returns.
The design is a drive-by-wire.
I was thinking of doing basic maintenance first, changing the spark plugs and cleaning the MAF sensor. Unrelated but may as well change the PCV valve as well.
Does anyone know where the likely culprit would be here?
Also would a basic scanner give like signal voltage for the throttle sensor or do I have to measure that manually?
Thanks
Bought a used low mileage mazda cx 7 2011 with the 2.5L automatic 2wd (non-turbo).
Everything is fine but acceleration is extremely sensitive and I'm pretty sure this is not normal.
What I mean by extremely sensitive is that when you press the accelerator pedal about 5% of the way, it's like the throttle has opened more than 50%.
If I press the pedal delicately I can get a smoother acceleration without the jump forward but then it's really hard to control to get a faster acceleration going.
So I can't really get a steady "middle" acceleration so to speak. Either slow or fast.
The vehicle otherwise drives and shifts smoothly in all gears without any issues.
I did some research online and it seems to come down to three things:
1) throttle position sensor
2) accelerator pedal
3) MAF sensor
Apparently there is also a case (I have not tried it yet) where if the battery is disconnected and the computer is reset, the problem goes away for a day and then returns.
The design is a drive-by-wire.
I was thinking of doing basic maintenance first, changing the spark plugs and cleaning the MAF sensor. Unrelated but may as well change the PCV valve as well.
Does anyone know where the likely culprit would be here?
Also would a basic scanner give like signal voltage for the throttle sensor or do I have to measure that manually?
Thanks