97 Q45 very slow when taking off from a light

[grip1968]

My Q is taking off very slow, the SES light came on and I check the code. Its P0325 1&2 Knock sensor, I also notice my fuel burn alot faster too. is this due to the knock sensor going out on me. I fill up on Monday and by thursday morning I'm on 1/4 or Empty. I not replacing the knock sensor what will it effect on my car. just curious, I love this car but it just hesitate when taking. Also I notice its making a humming noise when I have it up to 2 1/2 or 3 RPM's can the Knock sensor cause that too..
I apperciate any feedback

[Infinitiexpert]

I also notice my fuel burn alot faster too. is this due to the knock sensor going out on me.

It is possible, but more tests needs to be done to determine the cause.

I not replacing the knock sensor what will it effect on my car.

Nothing, other than the no power at take off.

Also I notice its making a humming noise when I have it up to 2 1/2 or 3 RPM's can the Knock sensor cause that too.

No. Where the humming noise coming from? what are of your car?

[grip1968]

do the knock sensor cause your gas mileage to decrease, I notice that when I fill up for the week, Thrusday morning my fuel gauge be on empty or near empty. Before my Knock sensor was going bad my fuel gauge on a Thrusday morning would be a lil below half.

[Infinitiexpert]

It shouldn't

It is possible that, due to the hesitation, you may changed you driving habits, e.g. harder acceleration and that is causing the increase on gas consumption.