Lexus GX 2004-09 :: Pulsating When Warm Up And Braking
Oct 17, 2013
05 GX 470...no KDDS...100k miles. When I've been driving a few miles, I feel a pulsating when braking. Feels like it's coming from the front (front left if I had to guess). I put in new rotors and brakes in the front, turned the back rotors and problem still persists, no improvement.
I'm now considering the hub-bearing. However, when I do the standard-check (lift wheel and apply stress from top/bottom) there's no indication of a bad hub bearing.
The problem worsens as I drive faster. When on the highway, if I start to turn the wheel right 'then' brake...the steering wheel pulsates bad. When I turn the wheel left 'then' brake, it's not as bad...but still noticeable. When I start pressing the brake pedal 'then' start to turn the wheel right it's still there but not as bad compared to applying the brake after turning.
There's no pulsation in the break pedal, only the steering wheel and body/chassis.
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After my 2006 Ford F150 Lariet started shaking and pulsating when braking (38,000 miles) I took the truck to the Ford dealer and asked to have my brake pads checked. They came back and siad they looked fine and I had alot of wear left. Then I mentioned that is was shaking and asked them to check it again, they drove it and then said my rotors are warped and I need to replace the rotors and pads. I don't haul, tow or do anything crazy with it.
Now, here's my questions:
1. Can the rotors go bad and the brake pads be fine?
2. Should I go with a ceramic pad or stick with the OEM?
I'm just a female and don't want to be taken advantage of at the dealers. Cost is not an issue when purchasing a good product.
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I just had new rear drums put on, my front brake pads are new, my rotors are good...but there is still a pulsating when I brake. When I am just about slowed down you can definitely feel a surging coming from somewhere. The steering wheel does not shake, and I don't feel more than a vibration from the brake pedal. I have taken it to 3 mechanics and replacing the drums was given as a solution. But since I have already done that, the problem is obviously not resolved. I know I need new tires as 2 of them are really cupped and loud...could that be it?
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Got new brakes 4 months ago - except this time put in redstuff ceramic pads.
I've had really bad vibration and grinding lately so I just had the rotors machined and cleaned up.
Some of the vibration is gone but when I apply the brakes more than very lightly I get shaking shuddering including the steering wheel. If I apply the brakes harder it goes away.
I would estimate the pulsating/shuddering/shaking happens when I apply the brakes more than 10 percent up to say 40-50 percent. Very light pressure no problems and hard braking no issues.
This has gotten worse since the servicing. What could be causing this? I've already replaced the propshaft and am replacing the tires.
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When braking i would feel the pedal pulsating...figured the pads were finished. Checked them out and they were not in that great a shape so I changed them all around. I'm still getting a pulsating feeling in the brake pedal.... I just need to bleed them or are the discs warn or warped or something?
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I have a 2007 Acura TSX with 117k miles. We had the rotors and pads replaced in July of 2014 at Midas (won't go back there again!). Anyway, we are getting a pulsating in the steering wheel (shaking) when braking at times. Sometimes it is much more noticeable than others. This started shortly after having the pads/rotors installed. I took it back to Midas, and of course they couldn't duplicate the issue.
So, here's my question, can we continue to drive the car until it needs new pads (then I'll change the pads and rotors)? I know that the steering vibration can be annoying at times (it's not AWFUL, but you can tell that they're warped). I really hate to have to replace both right now as money is pretty tight with buying a house.
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I have a slight shimmy at around 68-70 and that disappears when its cold out, (20 c today) . Was thinking the power steering fluid thickens?
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I was in the RX450h with my son, everything's fine, its running smooth like a purring cat. I get to the bottom of the hill at a traffic light and stop with my foot on the brake.
Then it just started pulsating, engine comes on, goes off, comes on again, goes off - almost like a pressure washer with an internal leak
It went away after 30 s or so and hasn't come back. No engine lights or hybrid system warnings.
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What could cause this? Its coming from the rear end. It seems to happen if I am going over 45mph and apply the brakes. It feels like a warped rotor, but if braking from 40mph and below, it is smooth. Both rear wheel bearings have been replaced. Tires are new. There was a vibration while cruising between 40&50mph, which was "cured" by the new tires... While replacing the wheel bearing, I noticed some play in the right rear axle at the joint closest to the wheel.
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My 07 LS460L has a pulsating idle. Approximately 2-300 rpm from 1200 rpm. It has, while in Drive dropped to 4-500 rpm then will recover. Also it has dropped so low that I thought it was going to stall but then it jumped to 1500 rpm fluctuated then recovered. I had it in at Sewell 2 weeks ago and they couldn't find the reason until a week later they said the throttle body was dirty. The tech cleaned it and I still have the same issue. No performance issues just idle? I have two LS430' 01&06 and neither one of them have this issue. The fuel rails were replaced under recall.
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When I brake very hard my right front wheel will skid, it releases quickly if I modulate the brakes. I removed the calipers to check for any frozen pistons. They are free. Pads are even and the rotors are good. I did bleed the system and no difference. what would cause this? Since I have looked at the mechanical aspect I wonder if there is sensor issue, is that a potential? I am not even sure if there is a sensor.
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What is the best way to go about tackling these problems, need tires but don't want to smoke them with present problems.
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When I brake hard. My truck wants to veer right. It drives straight otherwise.
I recently had my front shock replaced and prior tp that my truck did the same thing, although it was much worse since my left front shock was leaking. Originally I thought it was pulling because of the bad shock but now that thet've been replaced I am not to sure.
Alignment issue or something else entirely? Coud bad rear shocks cause the issue?
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My 2007 GX470 is making a clunk/thud noise when braking (more often when braking hard or on a downhill slope) and then again when I let off the brakes and start to accelerate. It is significant enough that I can feel the car jerk some when it happens, almost as if someone has tapped the back with their car. What it could be?
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The rear roof vents on my wife's GX470 only blows (non-cold) air, even though the rear controls are set for the coldest setting and the front is blowing ice cold. There are no error messages.
It's clear the rear is not working properly, yet there are no error messages.
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Recently bought a 2006 RX400h - my first Lexus. Occasionally when braking it feels like the electric motors "won't release" for a second or two and the car lurches. Eventually they do and then braking feels normal. But while this is happening it feels like I have to really step on the brakes to get it to stop.
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Having ABS issue with my 2004 Ford Escape XLT.
A bit of background information: every now and then (usually when decelerating from around 35-40mph), I will get a pulsating/knocking feeling from my brake pedal. At first, I thought it was the ABS, as I was told about a year ago that the ABS tone ring was broken. The more the problem manifested itself, the more I got to study it a bit. The pulsating/knocking in the pedal is usually accompanied by a very dry rubbing sound, and both the sound and the pulsating seem to be in direct relation to the motion of the wheels. I took it to the local garage this weekend and they recommended changing out the rear brakes - this made sense to me, as they haven't been changed out for as long as I have had the car.
Got the car back about an hour ago - on my way home, the pulsating came back when I was coasting into a stop light. The pulsating seems to have no affect whatsoever on the stopping distance of the car - a few times when it has happened, I have mashed the pedal, and the car comes to a quick stop just as you would want it to. After coming out of a complete stop, the brakes will work completely fine for a while - there seems to be no real rhyme or reason to what makes it happen.
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Lately my 2007 GX470's steering wheel has a shaking/vibrating problem whenever I apply the brake at speed above 50 mph or so. Without braking or with braking at slower speed, there is no problem at all -- everything is glass smooth.
1. I assume the front brake rotor is warped?
2. Will I need to change the rotor or is there a way to fix the warp (it that's the problem) without changing the rotor?
3. Approximate part & labor cost?
I plan to bring to dealer for a check up but would like to know ahead of time what to expect.
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I own an 08 Rx350 at 70k miles now. This is my first car ever; my parents bought it brand new and gave to me as gift after I graduated from college. I try to take good care of it; whatever the dealership tells me to replace, I replace it. I follow the maintenance schedule and owners guide to a T. I never really paid attention when my parents drove this car...but I don't know why my car vibrates when I get maybe above 60 mph and try to apply the brake. I do not brake hard and now I pretty much avoid applying brake and just let it glide. Is this normal? Whenever I visit the dealership they do a complete check up. All the check up results are normal;nothing wrong with tire trims, brake pads, suspension etc.
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Ok, I changed my front brake pads and rotors last week and since then everytime I get in the truck and drive for about the first 2 or 3 miles when I push the brake pedal it feels like my ABS sytem is activating. Then it stops and the ABS light comes on but the brake pedal stops pulsating when depressed. Is my ABS going bad or did I possibly do something wrong? I have changed the rotors and pads before without problems....
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What is the service manual spec for the idle rpm on a 2012 LS (after warm up)? From my scan tool the idle in neutral is 720-730 rpm and in drive it's 780-800. Yes, lower in neutral. I find the car wants to creep forward against the brakes when stopped. The dealer says nothing wrong but has not given me what the idle specs are. Additionally, is the idle adjustable, if so how?
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