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2005 toyota corolla low idle speed-when cold starting idle increases properly. Warmed up idles below 500 rpm. new air cleaner and plugs. approx 80000miles on car

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Idle air control valve can be removed and cleaned

Posted on Sep 05, 2010

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Ive got a Corolla 2006 model,im getting a lot of vibration from the engine while in drive but stationary-like at the red light,my engine RPM is showing about 500 is that to slow can I get the RPM adju


Hello, the idle speed is controlled by the computer, there is no adjustment, what you can do is to clean the inside of the throttle body:

Remove the intake hose from the T/Body, disconnect the battery, use a can of air intake/throttle body cleaner and a brush, open the throttle all the way and clean the carbon out, put the hose back and reconnect the battery, start the engine and keep the rpm up until it clears out, drive it for about 15 minutes, about 90% of the time this fixes low idle.

Feb 15, 2015 | 2006 Toyota Corolla

3 Answers

Why does my car jerk when i change the transmission from park to drive


the idle RPM is too high
or its just too cold,
how cold is it outdoors?
idle speeds cold can be about 1500 RPM/ cold.
and will ****.
it jerks because you are taking 0 torque from engine
and the sending that to a stalled rear axle.
this cause a ****, that is why the park lock out requires Brakes on
so yo dont run over things.

Oct 07, 2013 | 2005 Toyota Corolla

1 Answer

So my car, at random, will randomly lose power. The Tachometer will dip about 500 rpm, and then bounce back. This will slowly increase until the car stalls out, and it happens whether i've popped the...


To start with please do the following:
- Check the spark plug cord's resistance. (8 K Ohms- 25 K Ohms).
- Check spark plug gaps. (0.7 mm - 0.8 mm).
- Check reluctor to pick-up air gap. (0.30 - 0.40 mm).
- Check distributor cap for cracks or water accumulation inside.
- Check ignition timing. (10 - 12 degrees at idle speed).
- Adjust engine idle speed to 650 - 750 rpm.
- Check the valve timing.

Sep 25, 2013 | 1994 Toyota Corolla

1 Answer

My 1990 Toyota corolla just shuts down when my air condition is on


IDLE SPEED COULD BE TOO LOW.IDLE SPEED SHOULD BE 800 RPM. IF IDLE SPEED TOO LOW AND ENGINE NOT WELL TUNE UP AIR CONDITIONER WILL PUT LOAD ON ENGINE CAUSE ENGINE OVER HEAT AND SHUT OFF.

Sep 05, 2011 | 1990 Toyota Corolla

3 Answers

Hi I drive a 2006 corrolla with 70,000 miles. I noticed the idle slowly but surely gettin a litttle rough and lower. This only starts to happen after I have been driving for about 5 min. It usually happens...


It's been almost 2 years since you posted the question so it's likely you will not see my answer to your question.

First, do NOT make any adjustments to your throttle body idle setting. The screw most likely never budged since 2006 so you should not touch it since this is not the root cause. But yes it is wise to check all vacuum lines as "craig" suggested.

I have a 2007 Corolla CE, 1.8 liter VVT engine, 5 speed manual transmission which I bought new from the dealer. Currently has about 108k miles on it. After about 4 or 5 years in cool to cold weather it started doing the same thing. I researched it online then asked my local Advance Auto Parts person who confirmed my hunch. It is known as "idle hunting" when the engine is cold, in colder outside temperatures the idle rpm's will increase up to roughly 2000 rpm then drop to idle, then back to 2000 rpm, then repeats multiple times. Then after driving a short distance, stopping and running at idle, the idle speed may drop to 600 or 500 or as low as 400 rpm, running quite roughly but still keeps running. My Corolla normally idles smoothly and steadily at 800 rpm when warm or hot. The idle hunting or low idle rpm will typically correct itself when the engine warms up enough.

The problem: the intake manifold gasket has aged and shrunk a bit, allowing engine compartment air to get pulled directly past the gasket and into the cylinder head intake port. This causes an imbalance between the reduced air filter airflow sensed by the Mass AirFlow (MAF) sensor versus the actual air/fuel ratio versus the engine rpm versus the oxygen level in the exhaust stream. The gasket will shrink more as the temperature under the hood drops, allowing more air to flow past the gasket. The Engine Control Unit (ECU) is simply trying to do its job as programmed by increasing fuel delivery to compensate for the overall imbalance, then when rpm's get too high it will reduce fuel delivery.

The solution: purchase a new intake manifold gasket for roughly $10 to replace the stock gasket. Mine is a thin orange polymer gasket with round cross-section which seals around all 4 intake ports. You can search for instructional video of how to install it on YouTube.

I purchased one but did not install it yet. I am sure this will resolve the problem since all other suggested fixes I found on the internet did nothing but unnecessarily frustrate the owners.

Apr 03, 2011 | Toyota Corolla Cars & Trucks

2 Answers

'03 Toyota Corolla 1,4 VVT-i 4ZZ engine idle rpm


Idle is factory set and cannot be adjusted, your best bet is checking for cracked hose pipework for air intake at idle,(not at problem under exceleration and driving) Any slight upset to the air /fuel ratio will be most prevelent at idle speeds.Check hoses where the meet metal flanges on manifold intakes and any sharp bends in ppipes.Good luck

Apr 05, 2010 | 2003 Toyota Corolla

1 Answer

Low idle rpm 700-800 when engine is cold -corolla 1998


I'd be thinking real serious about changing the IAT sensor. Usually located on air cleaner housing, it senses the incoming air temperature & advises Computer to adjust fuel as necessary.You can try removing it & cleaning it with tuner cleaner from electronics store, but replacement is usually required. A good mechanic & scan tool can test it before replacing to see if it is functioning properly.

Jun 07, 2009 | 1998 Toyota Corolla

1 Answer

When the engine is not cold, it idles at below 400 rpm and stops


have the throttle body cleaned it is restricting air flow from having to much carbon in the intake yes and also it is time for plugs and wires.

Mar 22, 2009 | 1997 Toyota Camry

1 Answer

1985 toyota 4x4 22re missing and rough idle


Have you pulled out the spark plugs to see if there are any tell tale signs on them.They are a good indicator of many problems that occur and can save a lot of time isolating the problem.They should all be the same colour.Is the air box and lid properly secured with no leaks or splits in the intake tube.Have you put injector cleaner in the fuel tank to clear up any possible dirty injectors.Therse a few things your problem could be including engine vacuum leak which you can find by lightly spraying carburettor cleaner around suspect places such as inlet manifold and around injector seals.

Oct 24, 2008 | 1985 Toyota Pickup

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