"Idle control" refers to a mechanism or system that regulates the speed or activity level of an engine when it is not being used or when there is no load or work being done by the engine. It helps in maintaining a stable idle or stationary position of the engine without wasting excessive fuel or causing any damage.
Full definition
Other common failures that can cause a high idle speed are faulty idle speed control motors or faulty
idle control valves.
Usually, this issue is caused by a
faulty idle control valve or restriction of fuel flow through the throttle body.
It functions as a
mechanical idle control valve, so if the spring is weak or you have a vacuum leak, it might not be opening.
Other causes are the following:
bad idle control valve sensor and throttle body.
At idle, the car's
idle control system attempts to maintain a constant idle, but can only do so with a finite amount of torque.
IDLE CONTROL VALVES, SET OF 2 — Blade type; 4 - prong male terminal; With 2 mounting holes; This is a high quality, direct fit
replacement idle control valve set; Backed by 1 - year, unlimited - mileage warranty.
I
replaced idle control valve also replaced intake boot as well as valve cover gasket along with spark plugs, BMW 325i 1994.
it sounds
like idle control valve I had same problem on my Peugeot 206 gti when I started engine, it would cut out and I would need to turn over with accelerator.
Automatic models benefit from the latest generation AW F - 21 six speed transmission, which has been extensively revised to improve its operational efficiency, including gear train optimisation,
advanced idle control, and the adoption of low viscosity transmission fluid.
NHTSA said Chrysler has sent a service bulletin to its dealers advising them of a possible
idle control problem with the cars» logic module, but the automaker has not announced a recall.
It is quite possible that you have a faulty mass air flow sensor (assuming it was not replaced during your recent tune up),
damaged idle control valve or perhaps even a loose or...
This Ford Super Duty F - 250 SRW has the following options: Variable intermittent windshield wipers, Underhood service light, Trailer tow pkg - inc: 7 - wire harness w / relays, 7/4 pin combination connector, Trailer sway control, Tire pressure monitoring system, Tilt / telescoping steering column, Stationary elevated
engine idle control (SEIC), SOS Post Crash Alert System, SecuriLock passive anti-theft system (PATS), and Safety Canopy system.
Apart from the new engine it also gets a new ZF 8 - speed box, tweaked and fettled to suit the Range Rover — with a wider ratio spread to improve efficiency, closer ratios to improve performance and
transmission idle control to reduce fuel consumption.
If you've just cleaned the throttle body but now have an MIL on with DTC P2279 (intake air system leak), MIL on with P0507 (
idle control system rpm higher than expected) and / or a fluctuating idle, it's likely that the throttle plate is now in a different position from the one that the ECM / PCM had learned.
IDLE CONTROL VALVE — This is a high quality, direct fit
replacement idle control valve; Backed by 1 - year, unlimited - mileage warranty.
You should have the computer tested to get codes for the stalling and if idle air control valve codes are received then
replace idle control valve.
If this does not work or works for a short while, your throttle body and IAC (
air idle control valve) needs cleaning, clean them thoroughly with approved throttle body cleaner (parts store) and reset idle strategy again.
Ive been underneath and i think
its the idle control valve on pump.
Diesel not have
idle control valve as there is no concept of throttling and therefore no throttle pressure sensor
In my car, I know the issue is linked to the ICV or
Idle Control Valve.
Thanks for your answer, about
the idle control valve, About the pedal sensor i have changed the pedal and i get the exact same thing.
The idle control may have the ability to increase air through a bypass around the throttle, and adjust fuel amounts by controlling injector duty cycle.
There's no mention of
the idle control system, for example.
And while the clutch is in the friction zone
the idle control system is still providing fuel to the engine?
Okay, so you're saying that
the idle control system provides a low rate of fuel supply to the engine, but only while the clutch pedal is pressed down or the transmission is in neutral?
In a modern car there is
an idle control valve which the computer opens to increase air entering the engine so the engine does not stall.
update:
idle control valve grommet was the problem: intake box is made of aluminium which expands when hot, grommet was old and shrunk and that was together creating a vacuum leak
After tracing the issue down to
the idle control valve (idle would jump from 500rpm to 3500 rpm every second or two), I...
If that one is a bit «lazy» (usually because it's clogged), closing the throttle fully might starve the engine of air for long enough to die before
the idle control supplies enough air.
I'd also look at
the idle control valve itself and check if it's possible to clean that with some throttle body cleaner.
Another thing I have just thought of is that
the idle control valve might be malfunctioning, which would also give the symptoms you describe
From your description, I would second cleaning the throttle body but more importantly get
the idle control valve checked out.
After tracing the issue down to
the idle control valve (idle would jump from 500rpm to 3500 rpm every second or two), I managed to replace with a brand new one from the local Ford dealership (SAMCOR model, so Ford and Mazda shared a factory, even the branding all over my engine is stamped with Ford).
I don't know nearly as much about carb vehicles compared to FI, but does it have
an idle control valve, or is it just a hole in the throttle plate?
The idle control is most likely sticking or has gone bad.
When you are getting
the idle control valve replaced, your mechanic should inspect the vacuum lines for leaks.
Any time the battery is disconnected the computer will reset
idle control to when the car is new and may stall if the throttle body and idle control valve and mass air sensor if equipped is dirty and need to...
When
the idle control valve malfunctions, the idling speed is no longer regulated.
If cleaning
the idle control does not work, I recommend having a certified mechanic, such...
When the car is cold,
the idle control valve helps the engine start.
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