Question about 2004 Toyota RAV4

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My rav 4 idles real low and kills the care. what could cause the problem?

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If low all of the time then have the idle raised. If fluctuating up and down then probably the IAC sensor. You might try cleaning the throttle body real good. Let it air out before you put air intake assembly back on and start, will make smoke. Also the will help clean the TPS. Check for leaks also with starter fluid (be careful). Spray on hoses and if engine RPM's go up you found leak.

Posted on Sep 04, 2010

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Posted on Jan 02, 2017

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My car is a 2000 impala 3.4l sedan front wheel drive but its from the last post i put up on here


that noise, my wild guess is MISfire. and the engine RPM is way too low at idle (how low?) below 800 rpm?
that is misfire, and will stall.
this is all normal for gross misfire. on any car,
the shop (real) would plug in the scan tool and look at the live data
from the PCM. and see if there are pending codes. P030x codes
and look at all live parameters.
they'd see, ah idle controls failed, and is misfiring.
loss of idle controls is cause by 2 things, (in proper order)
1: engine misfires, or runs real bad.
2: ISC idle controls dead. (can be caused by above, most times)

misfire has 50 causes, and about 1 to 10 tests to find them.
you can gue$$ or test.
which one floats your boat?

Jul 10, 2014 | Cars & Trucks

1 Answer

Dash lights too dim on 2011 Rav 4


Do you have the dash light dimmer control turned down by chance?

Apr 12, 2014 | Toyota RAV4 Cars & Trucks

1 Answer

Toyota rav 4 problems


Before test use premium fuel. 1/2 tank. Change engine oil to lower co2 slightly and make sure engine is heated up drive in low gear for a few blocks to revv up motor for a while. Then run test again.

Apr 08, 2014 | 2000 Toyota RAV4

1 Answer

1995 toyota 4runner 4x4 Idling high sometimes than idles real low too


rule 1 on all otto cycle gas engines.
idle is the last thing to work right.
on EFI , its under control at all times.
but if the engine runs bad, it goes out of control.
IS THE CHECK ENGINE warn, lamp glowing running, ????
yes, why not get the DTC codes, (flash error codes now)
when it runs bad, is it misfiring, and shaking engine, weak power from engine,, bogging, or only stalling.
low rpm is near stall and is same thing.
1500rpm is perfectly normal for any cold engine.
Hot , its not.
first off check all fuses.
The idle controls are called ISC, "idle speed controller"
its a slave valve and ECU logic and servo controls.
the ECU works overtime , keeping idle right.
if the ISC sticks, it fails.
if the EGR sticks open , the ISC loses control
if the you get intake (induction) air leaks it loses control
same for misfire, gross, flooding. same for gross lean.
so how do we do this? find a cause.\
easy we give that long missed 60,000 mile tune up.
and during that i clean the ISC and EGR main valves.
on any old car like this, wow, its sure to be a mess, if not serviced.

then make sure the EGR main is closed,
engine hot.
i see if my ISC is trying to work.
i then check my fuel mixtures. to see if the engine EFI
reaches and holds closed loop.
oops, it cant be cause the 0xygen sensor died, 100k miles ago.
its dead.
no OTC scan tools for 1995 ( sure hackers have em)
so is very hard to get this information, i use a scope to watch my oxy sensor, if stuck rich i fix that first. if stuck lean , i find the exhaust crank causing it. or other cause... long list of tests.

in a real shop the start at the tail pipe end, OMG this puppy is rich as a pig and work forward, is start at the oxysensor
i get it working by any means.,
then fix idle if not already magically working. as most do (cleaned)

here is a very common example.
1: EGR sticks open at idle. IDLE RPM drops like rock. ( it must)
2: ECU sees illegal RPM and opens the ISC fully, to no avail.
some cars EFI hunts the ISC causing surging.
others ECU just slams the ISC wide open and does a software hope thing. in this case, does nothing,due to gross EGR misfire effects.
the idle controls are a SERVO,. a closed loop servo system.
it regulates idle until , something horrible happens.

it fails when conditions are outside it's range of Authority.







Feb 12, 2014 | 1995 Toyota 4Runner

3 Answers

My rav 4 2002 d4 engine does not idle, what could


mon rav 4 2002 moteur D4 ne tourne pas au ralenti, ce qui pourrait

Jul 02, 2011 | 2002 Toyota RAV4

1 Answer

1998 toyota rav 4. Right side low beam headlight doesn't work. Hi beam on that side does. Checked fuses, they appear OK, and tried 2 other headlights. Left side hi and low working fine.


sounds like there is a broken wire. the only advise i can give you is to follow the hot wire for that light untill you find the break in the wire.

Dec 25, 2009 | 1998 Toyota RAV4

2 Answers

Engine will start at very low idle, sometimes killing, then may fast idle, then low idle, back and forth. What may cause this?


check and make sure air filter is ok, and there are no restrictions in hose to throttle body, check iac (idle air control.

Oct 01, 2009 | 1990 Chevrolet Corsica

1 Answer

My car kills when at idle. has low r/min at idle.


Check the Idle Air Ctrl (IAC) motor. It should allow air to bypass the throttle plate when starting and at idle. if it is not working it could cause veh. to stall.

Aug 02, 2009 | 1996 Cadillac DeVille

1 Answer

Whinning noise


possible power steering pump.

Feb 04, 2009 | 2004 Toyota RAV4

1 Answer

Engine kills when engine warm


You need to replace your IAC (idle air control valve). The IAC, like it sounds, control the idle of your car. When they go bad they will cause the low idle and stalling. The IAC is located on the throttle body and is usually held on with a couple of screws. It is an easy relatively cheap fix that you can take care of by yourself. Let me know if you have any more questions. Thanks for rating my response and for using FixYa!

Jan 29, 2009 | 2001 Oldsmobile Alero

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