Pump Noise While Braking at Low Speeds
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Lexus Champion
Joined: Oct 2001
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From: Alabama
Pump Noise While Braking at Low Speeds
I've been doing my fair share of searching and can only find information on the 'ticking' noise caused by direct injection. This noise that I am experiencing is the sound of a 'pump' for about 1-2 seconds. It only happens when I am below 5mph and coming to a complete stop -- most notably when I first start my car and back out of the driveway, press the brakes, and change gear. It's coming from the engine bay and not sure if this was normal or not. Only can get it to reproduce a few minutes within starting the car.
I also hear the same noise when I turn off the car, close the door and wait a minute or two.
Any help would be greatly appreciated
I also hear the same noise when I turn off the car, close the door and wait a minute or two.
Any help would be greatly appreciated
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From: TN
i have the same issue. It usually happens in the morning when I am driving out of the garage. I can't tell if it's coming out of the steering column or the brakes. The sound does sound like a pump and goes off for about 3 seconds. Because I am driving at a slow speed, I can't tell if there is any brake fade. I do warm up my car in the morning by waiting about a minute...then I have to drive slowly out of my neighborhood for ~2 miles at 20mph. I haven't had the time to take my car to the dealer, but if you guys find out what exactly it is, let me know. I'd be very interested in what this sound is and if there is a fix to it.
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Thread Starter
Lexus Champion
Joined: Oct 2001
Posts: 3,277
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From: Alabama
i have the same issue. It usually happens in the morning when I am driving out of the garage. I can't tell if it's coming out of the steering column or the brakes. The sound does sound like a pump and goes off for about 3 seconds. Because I am driving at a slow speed, I can't tell if there is any brake fade. I do warm up my car in the morning by waiting about a minute...then I have to drive slowly out of my neighborhood for ~2 miles at 20mph. I haven't had the time to take my car to the dealer, but if you guys find out what exactly it is, let me know. I'd be very interested in what this sound is and if there is a fix to it.
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Driver
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He said he will be..
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From: CA
saw you mention you can only "reproduce (the sound) a few minutes within starting the car"
guess it's just a bunch of ABS circuits engaged/activated when the car starts to roll off where it was parked. it only happens once per start. is that it?
guess it's just a bunch of ABS circuits engaged/activated when the car starts to roll off where it was parked. it only happens once per start. is that it?
Thread Starter
Lexus Champion
Joined: Oct 2001
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From: Alabama
Happens more than once per start. Almost 90% of the time within a minute or two of the car turning off (Scared me the first time when I was cleaning the car after a drive) -- and within a few minutes of driving slow and stepping on the brake pedal.
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Lexus Champion
Joined: Oct 2001
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From: Alabama
Dropped my car off yesterday for the 15k service, replacing left driver's side mirror, and to check out this issue. Nuum's been working on my car (I trust anything Nuum does -- he's VVT-i ) and apparently the sound is normal and everything's working just fine (According to the service manager).
) and apparently the sound is normal and everything's working just fine (According to the service manager).
Thread Starter
Lexus Champion
Joined: Oct 2001
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From: Alabama
Well, apparently they didn't notice how frequent the pump noise was happening until today and they ended up ordering a new actuator for me. Problem is that it won't be another week or so until it arrives, so I'll have to take my car back later to get that fixed.