Question about 1999 Lexus RX 300

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Sound like driving over a rumble strip

Happens when I throttle back at 1100 rpm

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What does it mean when I come to a comelete stop and my car rumbles.


it rumbles as you are about to stop, well that depends.

if there is a vibration AS you are applying the brakes, and about to reach a stop, it could be that your brake rotors need machining, or "turned"; however, in this case, you would also hear a grinding, as well as feel the grinding through your foot.

there is also a "rumbling" associated with a strut mount gone bad; however, this is more of an audible clanking, and is also audible when driving slow on a bumpy road, and not really specifically in the process of stopping.

for either of these, please stop using your radio, and possibly open the windows, to better describe the sound.

IF the car shakes when sitting at a stoplight, or such, please watch your rpm gauge (tachometer), and see if the idle speed is exceptionally low or erratic.

if this is the case, it may be that your throttle positioning sensor, mass airflow sensor, or the like, is malfunctioning, and is giving a warm engine a fuel/air mix appropriate for a cold engine.

Dec 28, 2014 | 2006 GMC Envoy

2 Answers

Vibration when trans shifts to 4th


it might be transmission problem,check the oil level or add some trans oil treatment.do a scan test & read the number.

Jan 27, 2014 | 2010 Scion xB

1 Answer

Rearend rumbling


Since it only does it when ya let off the throttle,with car stopped and raised enough you can reach the drive shaft with emergency brake on and shift in neutral,grab the drive shaft and twist it back and forth to check if too much backlash in rear pinion and ring gear.If too much backlash,pull the drive shaft off the rear and tighten the nut JUST enough to take the backlash out near completely.Riger says,don't let the car roll while doing this.Block all wheels.

Aug 28, 2012 | Ford Cars & Trucks

1 Answer

Intermittent rumbling sound in transmission at ~30 mph when going uphill and easing up a little on the gas. very much like driving over a rumble strip on the highway like they put in front of toll booths....


Do you have the problem when you turn on the car as well? I had this same problem, turns out the alternator was going bad. A few months later the alternator went. After the alternator was replaced, the problem went away.

Jan 05, 2011 | 1998 Ford Explorer

1 Answer

Rumble strip problem. acceleration makes it go away???


look at your coolant. if it looks like coffee or its thick or beige in color, than you need a transmission and radiator replaced. your radiator failed. the build in cooler to be specific, which caused your trans fluid to mix with cooant and trans got contaminated,. your trans is junk.need to replace it with new radiator. make sure to flush out your trans cooler lines also. some of the contaminated fluid gets trapped inside of them. you want to have the system clean as much as possible.

Jul 07, 2017 | 2005 Nissan Xterra

1 Answer

Engine rpm's increase without increaseing throttle,on start up. Not consistent. Goes back to normal quickly before driving. Happens ocasionally during driving. Fuel economy not affected.


if its petrol the throttle body may be in need of a clean and resetting or it may have a small air leak if its a diesel its worth checking the fuel filter they can get contaminated with oil if you find this the injector seals will also need replacing and the fuel tank and pipes cleaned out

May 02, 2010 | 2002 Volkswagen Jetta TDI

5 Answers

Vibration or rumble noise Honda Pilot


you have a bad torque converter. well documented on the Honda Pilot forum and Honda is ripping everyone off including me on the problem.

Aug 07, 2009 | 2006 Honda Pilot

2 Answers

96' Intrepid with Eratic RPM


Sensor could be broken or wiring.

Nov 03, 2008 | 1999 Dodge Intrepid

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