Mechanics

NOISE WHEN SHIFTING

2008 Scion xD

Noises problem
2008 Scion xD 4 cyl Front Wheel Drive Manual 7000 miles

Hello:

I have a 2008 Scion XD. The car has been great. Although I knew how to drive stick before, I have perfected such technique with this car.

Recently I noticed a strange sound when shifting gears.

Here is what happens:

WHen I press the clutch to shift from 1st to 2nd I hear a 'revving' sound coming from the car. It does not sound like the engine though. It sounds like something spinning. A soon as I let go of the clutch, it goes away. It also happens when shifting from 2nd to 3rd, but it's more faint.

The sound can be heard, but it's not too loud. Usually I hear when my windows are rolled up.

Now here is what I found: The sound only happens when I am not using the A/C compressor. If the A/C is on, it never makes this sound. Which leads me to believe that it has to do with this. Maybe since the A/c compressor is not being engaged, it spins like crazy when the car revs up and I then shift?

Is this normal? Am I doing something wrong? Shifting too soon, too late? Should it even make this noise under any circumstance?

PLEASE HELP! I don't want to take it to the dealer and sound dumb about this if it's normal from a manual car. At the same time, I want to get this corrected if it's not supposed to do this.

Honestly, I am somewhat of a freak about car noises. And since this car is practically brand new. It's bugging me. A lot.

THANKS, for your help!

I have made a small donation, since you guys have answered my questions before.

Best regards,
Ernie
Avatar
Esanabriajr
November 13, 2008.



When I read the first part of your post I was thinking bad throwout bearing in the clutch, but eith only 7K on the car, that is highly unlikely. Then you threw in the a/c compressor and I started thinking clutch bearing on the compressor. The trans clutch and the a/c bearing have nothing to do with each other except that they both spin. When you are cruiseing down the road try lightly depressing the clutch pedal, not enough to disengage the clutch, just put a little tension on it and see if the noise appears or changes pitch if you vary the pressure. Also, I wouldn't be afraid to have the dealer check it out. They would much rather check it out than have to repair something major down the road. Hope this helps. One more thing, if more people listened to their cars as you do, we wouldn't be getting 6'000 postings a month. I commend you.

Tiny
James W.
Nov 14, 2008.