NEED YOUR HELP S2KI
Joined: May 2005
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From: 茨城県
I have the same sound on mine. I think it's the ABS getting "pumped". But yeah it sounds like a clamp and happens just once after a cold start when you get moving. I think it's vacuum driven which makes sense for the ABS.
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From: Virgnia
Originally Posted by Boofster,Dec 12 2006, 12:05 PM
I have the same sound on mine. I think it's the ABS getting "pumped". But yeah it sounds like a clamp and happens just once after a cold start when you get moving. I think it's vacuum driven which makes sense for the ABS.
Joined: Jan 2006
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From: 17 ft below sea level.
Boofster Posted on Dec 12 2006, 09:05 PM
The Brake Booster needs / uses vacuum to create more force (pressure) in the brake lines, the ABS pump doesn't, it uses an electrical pump.
In my service manual they mention the the ABS pump is checked the first time the engine is started after the ignition switch is turned on (II) and that you may hear the pump operating and its normal. They don't specify how long the test takes and they don't mention the car has to move first.
It is also mentioned that the ABS pump operates when ABS is functioning.
IMO that means that if you are not braking the pump doesn't run, it only runs when needed IOW when the reduced brake fluid pressure has to be build-up again.
I think it's vacuum driven which makes sense for the ABS.
In my service manual they mention the the ABS pump is checked the first time the engine is started after the ignition switch is turned on (II) and that you may hear the pump operating and its normal. They don't specify how long the test takes and they don't mention the car has to move first.
It is also mentioned that the ABS pump operates when ABS is functioning.
IMO that means that if you are not braking the pump doesn't run, it only runs when needed IOW when the reduced brake fluid pressure has to be build-up again.
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From: Anaheim, CA
Originally Posted by zyr,Dec 11 2006, 09:44 PM
lol.. I had a clicking sound too on MY06.. turns out it was a sticker on the side of the engine that has the pulleys that partially peeled off. It was fluttering nxt to the pulleys. After I peeled the sticker off, no more clicking . I'm guessing the dealer forgot to peel off the sticker as part of the delivery procedure when I purchased my car.
. I'm guessing the dealer forgot to peel off the sticker as part of the delivery procedure when I purchased my car.
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