Whining on deceleration...

Fathead_03 · 01-10-2009, 05:10 AM

I've noticed this lately. When I decelerate from about 60mph down to about 20mph, I get a slight whirring/whining sound. It sounds like the car slowing down after a dyno pull. Now I have tried it in gear, out of gear, clutch in, clutch out, etc, and it doesn't make a difference. Its directly related to wheel speed. Now my rear tires are VERY bald, almost to the cords, my new tires are getting put on tomorrow, and I am pretty sure this will take care of it, but I was just checking in-case it doesn't.

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Charles R. Hill · 01-10-2009, 05:12 AM

Check your diff fluid level, too.

After that, perhaps rear bearings or rear CVs.

DeViLbOi · 01-10-2009, 07:09 AM

How many miles since you did tranny and diff fluids?

04RX8man · 01-10-2009, 07:51 AM

I have that sound also... I believe changing the tires will make a great difference....also many other have complained about this and have found that mazda says it's normal...get the tires changed and then report back and see if it has changed any and we all can try and narrow it down from there!

EDZRIDE · 01-10-2009, 12:12 PM

Quote:

Originally Posted by Charles R. Hill

Check your diff fluid level, too.

After that, perhaps rear bearings or rear CVs.

^ +1

Fathead_03 · 01-10-2009, 01:56 PM

The car has 58k on it. I'm pretty sure its tires. I'm going to change them out here in a few hours. Ill let you know if that fixes it. If not, fluids here I come!(planned on doings fluids at 60k anyway)

DeViLbOi · 01-10-2009, 02:40 PM

If I remember correctly you are supposed to do fluids at every 30 - 50K

Fathead_03 · 01-10-2009, 08:52 PM

Well I got the new tires on. Whine is still there. Its quite faint, yet there. I may pick up diff fluid and do that tomorrow. I have a feeling this might be because I drift...

Razz1 · 01-12-2009, 12:19 PM

Rear end

Socket7 · 01-12-2009, 01:10 PM

I get a noise kind of like that that i can hear coming from the gearshift.

I just had fluids done recently. So it's normal, especially if you have a short shifter and have removed the sound dampening insulation around the shifter boot.

staticlag · 01-12-2009, 01:50 PM

Quote:

Originally Posted by Razz1

Rear end

I agree, sounds like it might be your LSD taking it. Or your gear mesh could be out of alignment. Have u hit any curbs with your rear wheels lately?

staticlag · 01-12-2009, 01:52 PM

If you drift a lot I would try a heavier diff oil, 75w140. Or redline shockproof

05rx8mazda · 01-12-2009, 01:56 PM

MINE HAS MADE THIS NOISE since i had the car.. i actually like it. it sounds jet like whine haha well at least to me.

but really you need to change that diff fluid

czar · 01-12-2009, 02:00 PM

Quote:

Originally Posted by 05rx8mazda

MINE HAS MADE THIS NOISE since i had the car.. i actually like it. it sounds jet like whine haha well at least to me.

but really you need to change that diff fluid

...the only whine i remember coming off yours if from your engine, which was the same as mine when i had my midpipe on

kersh4w · 01-12-2009, 03:24 PM

redline 75w140NS is what sipe (teamrx8) recommends.

i run redline mt90 (75w90) because im not as hard on trannys as he is. if you drift, you might want to check into the redline 75w140NS.

04RX8man · 01-12-2009, 05:47 PM

yeah if it's still there but faint change the diff fluid and tranny fluid and sould take care of it

zoom44 · 01-12-2009, 05:54 PM

ok ive waited 2 days to post this....

tell her to shut her mouth or you'll get the duct tape?

zoom44 · 01-12-2009, 05:55 PM

or....

let her out of the trunk?

Fathead_03 · 01-13-2009, 01:29 AM

She does fit in my trunk!

Update - Put Redline MTL in my trans, and Redline 75/90 in the rear end today, as well as changed the oil. The whine is more faint, but its slightly still there. I think its probably normal. I may switch to a different heavier fluid next summer, but right now, I have hankook icebears on it, which are spendy, so no drifting for me. Does shift nice though!