Rough Idle or engine vibration 2007 RAV4 4cyn

nlinecomputers · Oct 16, 2011

This is about a 2007 RAV4 base trim with a 4 cyn engine. about 69,000 miles on it. Lost a battery on it about 2 weeks ago and had a new fuel pump installed last year other then that it has been a good little SUV.

For the past couple of weeks I have been hearing a vibration noise/rough idle that would come and go . After paying more attention I discovered that it only happens when I am in drive and stopped with the brake pedal applied. I had my wife sit in the car (with the parking brake on) and put the car in drive and keep the foot on the brake. With the brake applied the entire air filter assembly shakes, violently. If you put the car in any other gear it stops. It also stops if you let off the break. For obvious reasons I can't really test it driving that way but the sound stops when the car is in motion.

My Mileage has been dropping in the past few months and I figure both are related. What can I do on my own to further test this or repair it.

It almost seems like exhaust is being pushed back into the intake but I can't figure why that would be tied to brakes. But I'm a computer tech not a mechanic so maybe I'm missing something obvious.

Thanks in advance
nlinecomputers

nevermind65 · Oct 16, 2011

Here's an idea to start: Buy 2 cans of carb cleaner. Remove the air filter assembly from the car and clean the inside of the throttle body. I also removed the throttle body. It was easier to clean the small air passages.

My car had the same problem, actually, mine would stall. After cleaning the throttle body and removing all the carbon build-up, it runs like new again.

pmorrone · Mar 26, 2012

Did you ever get this resolved? I have the same issue.

goose351 · Aug 21, 2020

ensure you have the correct size battery. I had the same problem and discovered the battery which was in the car was a 350ccl when it should have been 500ccl. Good luck.

Toho · Apr 20, 2014

Try cleaning the MAF sensor, CRC makes a cleaner. It may run rough for a few minutes after but mine cleared up.

krane · May 9, 2014

Toho, do you have any tips for doing that MAF sensor clean up? I have a can of the CRC thought I'd do some prevent maintenance. So far, no issues at all with the RAV after 5 years and almost 70k miles, but I'm new to a MAF sensor.

xtro · May 22, 2015

rav4 2009 idle drops in drive mode

Hi i have a very irritating issue my 2009 rav4 ACA36, 2AZ-FE is having strange idle problem. when it come to default temperature while i am driving when i come to traffic light or a stop in drive mode holding breaks my idle drops to 500 to 550 and vehicle start little bit shaking. then again in few seconds it kicks of to 800 RPM.

the strange thing is if ON my parking lights or defroster rpm never drops its very much stable. i have a voltage stabilizer as well (pivot mega razing) it shows 12+ voltage always never go below 12V.

cleaned throttle body several times and all the sensors except o2 sensor.

i fixed 55w HID lights to my fogs i thought that causing the issue and i disconnected them. tried removing battery and fuse of ecu and done all the things like changed spark plugs. but still idle problem is there.

can you guys please try and see when turn on ir lights or defroster will your idle working properly or not coz its working for me but its not a solution now what i think is it might be a electric issue?

if any one knows a solution please reply. thanks.

Dashii · Feb 18, 2016

Does anyone have a news about solving their Idle problem mine has a same problem cleaned MAF sensor, Throttle body, spark plugs seems OK and fuel pump working properly, but problem persists. When you brake till stop /only when normal operation temperature has reached/ it shakes a bit and Idle drops for like 100-150RPMs for about couple of seconds and then restores to normal 650-700 RPM's

Rough Idle or engine vibration 2007 RAV4 4cyn

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