Mazda unstable idle immediately after cleaning throttle

An assembly car diagnostic tool of imported engines Hainan Mazda sedan. Automobile clean throttle soon after idling higher, in 1200r/min get down.

Pick-up: Remove the battery line to clear the original value of discovering idle returned to standard following the re-fitted. But driving a number of days after the emergence of reduced idle velocity, clean throttle again, and remove the idle velocity motor, this automobile idling motor rotary valve, cleaning the valve is closed, almost certainly due to this cause isn't cleaned clean idling motor is then removed from your throttle, and plug during the idling motor plug, turn the ignition switch, when the valve is open, refitted and re-cleaning agent valve, commissioning, usual idle.

Just after VAS 5054A a number of days of driving this auto once again to restore the failure at this time is definitely the idle velocity is too lower, cold substantial idle, minimal idle after sizzling auto, barely capable to reside car. Fault code read through through the decoder, show "system normal". See the data stream, the information movement is not really very exact, no reference value.

Right after inspection, identified that this car is outfitted with exhaust gasoline recirculation device suspect this device hairpin, pass into the exhaust gas to your intake manifold inside the idle state, brought about by idling too low phenomenon.

Then take away ELM327 the valve checked and observed that without a doubt, this kind of as evaluation, this valve is removed, then the motor part of the seat portion separate, direct hand pressure acting spool, clearly hairpin indicators, cleaning and thread loose agent lubricated, is often simply pressed, mounted retest the car, the engine idle velocity back to ordinary.

Summary: This car or truck is definitely the first failure is high idle speed, the main reason is not completely cleansing the throttle and idle valve, idle speed is also reduced failure later on phenomenon, the idle minimal failure since the exhaust fuel recirculation valve closed lax, resulting in idling some exhaust fuel immediately after combustion is involved in the combustion result in unstable engine work, induce idling adverse. Real restore often encountered this erratic idle poor fault phenomena, below regular conditions, may be deemed the exhaust gasoline recirculation valve closed lax, to observe the framework on the versions in the future servicing, should the exhaust gasoline The recirculation gadget, pay attention to its servicing inside a timely manner, in order to avoid equivalent failures.
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