Question about Toyota RAV4

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Butterfly Throttle Valve is sticking and needs cleaning on my 99 Rav4

The Butterfly Throttle Value is sticking and needs cleaning on my 99 Toyota RAV4...not sure how to do that?

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  • Toyota Master
  • 1,104 Answers

Is not so difficult. Just remove the flex hose ( induction pipe ), remove the two small hoses feeding water the stepper motor which is under throttle,by just stick in the hoses hole a screw not to allow water to leak out. remove the vacuum hose which is on the top of the throttle housing. The throttle body is ready to get removed by loosing the four long bolts. After having in your hands the body,just go to a washing point and using a carburetor cleaner clean it.

Posted on Nov 22, 2013

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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Mike258
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SOURCE: Serpentine Belt Toyota Rav4

Hi maroon,

  • Get a 14mm or 9/16" socket and a long handled ratchet or breaker bar.
  • Get the belt around all the pulleys except the A/C compressor or Alternator. Double check your routing.
  • The tensioner pulley is on a spring loaded arm. Get your socket on the center nut of this pulley.
  • Slowly pull the ratchet toward the center of the engine. The pulley will pivot on the arm allowing you to get the belt on the final pulley.
  • Slowly release the tension.
  • You're done
Mike

Posted on Dec 14, 2008

  • 1 Answer

SOURCE: rav4 gear problem

You need a new 5th gear- luckily this is easy to replace- I did it myself following online directions for 5th gear replacement. The 5th gear is not in the box with the other gears- its off to the side so you can access it very easily by removing the left front wheel. Just don't let the idler assembly come apart, lots of tiny parts and springs...
The 5th gear can ware out prematurely if you rest your hand on the shifter- do not rest your hand on the shifter in the future.

Posted on Feb 18, 2009

  • 1 Answer

SOURCE: how to find timing belts marks toyota rav4 2l

I have just replaced my water pump on my 1998 RAVE4, also, the timing belt and the other two belts. I had a tough time with the timing marks. The way you line these marks up is easy if you take the time, First, if you are changing the timing belt you pull the balancer and both top and bottom plastic covers,(do not try to pull top cover off before you take off balencer and the motor mount off or you will just break it.), Second after covers are removed you will have access to the timing belt, you can now remove it by loosening the tensioner bolt and pushing down on the tensioner wheel, the belt then can be taken off. Third take out number one sparkplug and replace the bottom cover by maybe two bolts so that you can see marks on cover, next replace the balancer and bolt. Turn the motor over by hand with the balancer so the small divit on the back of the balancer is on 0 or top dead center on the compression stroke, you can use a compression gauge for this or I just used a mirror and light to shine in the number one cylinder to see the piston. Next remove the balancer and cover and make sure to make a mark on crankshaft gear and housing. Next you will need mirror and flashlight, now turn camshaft gear clockwise to line the hole in the gear with the top timing mark. I recommend a small circle mirror for this. Now replace the belt. I turned the crank shaft gear one tooth counter clockwise off mark and the camshaft one tooth clock wise off mark so when the belt is on you can turn the camshaft gear counter clockwise to get tension on the belt and marks will line up. I would recommend changing water pump,tensioner wheel, and the idler wheel. After belt is on I would replace the bottom cover the balancer and the crankshaft sensor. Iwould then start it to make sure the water pump is not leaking and the motor is not pinging or you will have to tear it back apart again. Good luck and no I am not a certified mechanic just thought this would be helpful from my own experience.

Posted on Apr 30, 2009

  • 2 Answers

SOURCE: 2006 Toyota RAV4, 3.5L V6 Check engine

I am having a multiple cylinder misfire on my 2006 Toyota RAV4 with the 3.5L V6. Every cylinder is reporting a mifire. Each cylinder has it's own coil. I highly doubt that all 6 coils went bad at once. Does anyone have any idea what my be causing this?? Is that the problem you two are having?

Posted on Mar 09, 2010

  • 4793 Answers

SOURCE: Toyota RAV4 1995 Manual - free download

if they do and they have not got permission from toyota to reproduce said item,then they are headed for the courts.....you have to buy them in europe.....£18 each...

Posted on Apr 06, 2010

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In theory once the desired idle speed is programmed into the management system, in the absence of such faults as air leaks, sticking idle air control valve and suchlike it should be impossible for the idle speed to be much different from the programmed value because the ECU should continue closing down the amount of air bypassing the throttle butterfly until the idle is around the correct value.

I think you need to go back to basics and double-check the work to ensure everything is as it should be. In the absence of mechanical faults and ignoring the possibility of electronic problems a high idle must be caused by too much air entering the engine, either because the idle air control valve is not closing properly or because the throttle butterfly is not closing fully.

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Get a can of spray carburetor cleaner and spray the shaft that holds the butterfly valve. Clean the springs too.

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How to clean the throttle body and the idle air control valve


I typically remove them to clean but they can be cleaned on the car. Get throttle body cleaner from the store and spray all over. Manually open the butterfly valve and wipe after. I would take the idle air control vavle off to clean it.

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RPMs jump up while driving. Foot off accelerator car will go 30mph. Difficult to stop. Changed a couple of vacuum hoses - did not solve problem.


This type of problem needs to be approached with diligent process of elimination to properly diagnose.
Check for vacuum leaks...with the engine running, spray carb cleaner at each joint and seal along the intake system and intake plenum. If there is a leak the engine idle will change as the spray is taken in through the leak.
The idle air control valve could be faulty or dirty. Remove the idle air control valve and clean the interior with carb cleaner.
There could be deposits in the thottle body causing the throttle valve to stick open. Check for free operation of the throttle valve. Clean the throttley body with throttle body safe (NOT car cleaner) cleaner by removing the intake hose, spraying the cleaner on the paper towel and cleaning the interior of the throttle body while holding the throttle butterfly plate open.
Make sure the throttle cable moves freely and that the return spring is present and working properly.
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The most common reason for this is a buildup around the butterfly valve in the throttle body. Under the hood, find the intake hose that runs from the air cleaner box to the intake of the engine. Remove the hose from the throttle body.

On the inside of the throttle body, you will see the butterfly valve which opens when you press the gas pedal. Clean the throttle body with a suitable cleaner such as Throttle Body Cleaner, which can be found at your local parts store. An old toothbrush and rags work well for cleaning the valve and behind the valve. Dry everything up and reassemble.

Other reasons could be sticking linkages at the throttle body that actuate the butterfly valve, or something as simple as your floor mat catching the pedal when depressed.

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