قبل ان تنظف الثروتل لموديلات جى ام 2007 وما فوق

[رحال7]

هذه خطوات ة اعادة برمجة ال IDL بعد تنظيف الثروتل..يجب ان تتبع هذه الخطوات مباشره بعد التنظيف...يعنى قبل ان تنظف الثروتل تكون عارف هذه الخطوات! والا ستواجه مشكله ارتفاع صوت المكينه او تعليق الدعسه!
للعلم هذه الخطوات قد لا تعمل فى كل الحالات


4 Throttle/Idle Learn

Description

The engine control module (ECM) learns the idle position of the throttle plate to ensure the correct
idle. Anytime the throttle body is cleaned or replaced, the ECM must learn the new throttle
position. The idle may be unstable or a DTC may set if the throttle position is not learned.

Conditions for Running the Throttle Learn Procedure
شروط عمل خطوات اعلدة البرمجه

• DTCs P0101, P0102, P0103, P0107, P0108, P0111, P0112, P0113, P0506, and P0507
are not set
عدم وجود اى من الاخطاء المذكروه فى الاعلى.
• The engine speed is between 450-4,000 RPM.
عدداد دوارت المحرك بين 450 و 4000
• The manifold absolute pressure (MAP) is greater than 5 kPa.
لا اعرف الترجمه بالعربى
• The mass air flow (MAF) is greater than 2 g/s.
؟؟؟
• The ignition 1 voltage is greater than 10 volts.
؟؟؟؟
Throttle Learn
Important: Do NOT perform this procedure if DTCs are set. Refer to Diagnostic Trouble Code
(DTC) List - Vehicle.


1. Start and idle the engine in PARK for 3 minutes.
الخطوه الاولى: تشغل المحرك بعد التنظيف وتتركه ثلاث دقائق فى الوضع الخامل
2. With a scan tool, monitor desired and actual RPM.
الخطوه الثانيه: تشبك جهاز المراقبة لعدداد دوارت المحرك (هذا غير متوفر وغير ممكن الا للورش وبعض الهواه)
3. The ECM will start to learn the new idle cells and Desired RPM should start to decrease.
الخطوه الثالثه: يقول ان كمبيوتر السياره سيتعرف على الوضع الجديد للثروتل
4. Ignition OFF for 60 seconds.
الخطوه الرابعه: يقول اطفىء المحرك لدقيقه (بعد الثلاث دقائق)
5. Start and idle the engine in PARK for 3 minutes.
الخطوه الخامسه: شغل السياره واتركها فى الوضع الخامل ثلاث دقائق اخرى!!!
6. After the 3 minute run time the engine should be idling normal.
الخطوه السادسه: يقول الان وبعد الثلاث الدقائق الثانيه المفروض تكون تبرمجة السياره على الوضع الجديد...
ملاحظه: يقول بعد الخطوه السادسه وبعد ان تبدأ بالسياقه ربما تظهر رسالة تحذير قم بازالة الرساله حتى تستمر عملية البرمجه (طبعا تحتاج جهاز برمجه )
كذلك يقول اذا لم تتبرمج بعد كل هذه الخطوات قم بسياقة السياره فوق 70 كلم فى الساعه مع القيام بتهدئة السرعه عدة!!مرات وكذلك مع الوقوف و ترك المكينه تعمل والسياره واقفه لوقت طويل .
Important: During the drive cycle the check engine light may come on with idle speed
DTCs. If idle speed codes are set, clear codes so the ECM can continue to learn.
�� If the engine idle speed has not been learned the vehicle will need to be driven at
speeds above 70 km/h (44 mph) with several decelerations and extended idles.
7. After the drive cycle, the engine should be idling normally

�� If the engine idle speed has not been learned, turn OFF the ignition for 60 seconds
and repeat step 6
8
. Once the engine speed has returned to normal, clear DTCs.

يقول فى الاخير: اذا لم تحل المشكله اطفىء المحرك دقيقه وكرر الخطوه السادسه!

والله اعلم

[رحال شمال]

وانا اخوك ترجم لنا عشان نفهم السالفة . هنا يالله بالخير .

وتقبل مروري .

[رحال7]

وانا اخوك ترجم لنا عشان نفهم السالفة . هنا يالله بالخير .

وتقبل مروري .

ابشر يالحبيب..خلينا نحط المعلومات اولا ونثبتها وبعدين نجتهد جميعا فى الترجمه

وهذه معلومات عامه عن طريقة عمل الثروتل:


Engine Idle Speed and Electronic Throttle Control

As the accelerator is released, engine speed slows. At a preset speed the idle circuit takes over and the engine runs at the lowest speed possible, without stalling. Watch the tachometer (http://www.agcoauto.com/content/plugins/p2_news/printarticle.php?p2_articleid=166) and you will notice idle speed is around 500 to 900 RPM. You may also notice that it changes from time to time. The engine computer totally controls idle speed today, based on complex calculations.
Gone are the days when idle speed was adjustable. The power control module or PCM carefully determines the speed at which an engine idles, based on several input-sensors (http://www.agcoauto.com/content/news/p2_articleid/206). Manual adjustment of idle speed is NOT possible on modern vehicles and diagnosis of problems is a bit complex.
When engines had carburetors, there was always a means of adjusting the idle speed. If the engine idle speed was too low or too fast, a simple turn of a screw corrected the problem. With electronic fuel injection the adjustment was largely eliminated.
The reasons for eliminating idle adjustment, are many and involved. Fuel injection (http://www.agcoauto.com/content/news/p2_articleid/152) carefully monitors air flow, as it is directly related to fuel/air mixture. Carburetors set fuel/air mixture with jets. Air flowing through a venturi drew a fixed amount of fuel based on the size of the jet. More air entering through the carburetor, meant more fuel and an increase in engine speed.
http://www.agcoauto.com/content/images/engine/idle_control_stepper_motor.jpg
Early fuel injection normally used an idle air control or IAC valve to control idle. There are many designs, but most work in a similar manner. General Motors often used a stepper motor to turn a screw, which moved the air valve in and out.
http://www.agcoauto.com/content/images/engine/idle_control_solenoid.jpg
Ford products more often used a spring-load plunger type of valve. The PCM increase duty cycle to the magnetic coil to move the air valve against spring pressure. When inputs to the PCM signaled a need for increased idle speed, a valve opened in the IAC, increasing air flow. The fuel injector was also commanded to open a fraction of a second longer, increasing fuel flow. Idle speed increased because additional fuel and air entered the engine.
For instance, switching the air conditioning (http://www.agcoauto.com/content/news/p2_articleid/210) on, increases the engine load. With the IAC system, the computer immediately increases idle speed to compensate. A cold engine is also commanded to a higher idle speed. This helps to circulate engine oil and prevents stalling. The fuel injectors may add additional fuel to help the cold engine run better, much as a choke did on older engines.
http://www.agcoauto.com/content/images/engine/electronic_throttle_control_system.jpg
More modern vehicles use a throttle that is no longer physically connected to the accelerator. Pressing the accelerator causes accelerator pedal position sensors to move, which notify the PCM of the request for increased vehicle speed. The PCM sends a digital signal to a stepper motor, in the throttle body, which increases vehicle speed. At the same time, throttle position sensors let the PCM know how much the throttle has moved. There is no longer a mechanical connection between the throttle and the accelerator.
The IAC is no longer needed with drive-by-wire systems. Idle speed is controlled by the PCM, directly opening and closing the throttle. Each time the throttle is opened, fuel injector pulse width is also increased to keep fuel/air mixture correct. The air flow meter, air intake temperature sensor, engine temperature sensor, barometric pressure and other sensors calculate injector pulse width. Fuel/air sensors also monitor the exhaust and make further corrections to the fuel/air mixture as needed.
Sometimes the accelerator is abruptly released. This may occur when braking at high speed. The engine must go from high RPM operation to idle, almost instantly. The idle circuit eases the transition and allows a more controlled reduction of speed. When the idle circuit fails, the engine may stall when the throttle is suddenly released. This is often seen by the driver as the engine dying, but is very different from a standpoint of diagnosis.
Idle speed varies widely, depending on engine requirements. The power control module constantly monitors idle speed and learns the optimum setting for different circumstances. Idle-memory, along with many other factors are stored and constantly tweaked by the PCM. For example, a slight vacuum leak or worn spark plugs are compensated for in memory. This is one reason why there are seldom symptoms, such as a rough idle, even with an engine badly out of tune (http://www.agcoauto.com/content/news/p2_articleid/208).
If battery power is disconnected (http://www.agcoauto.com/content/news/p2_articleid/134), the PCM will lose idle memory. This may reveal several problems that were being disguised. Idle speed may fluctuate and the engine may run rough and stall. Sometimes these problems cannot be overcome by the PCM and the check engine light (http://www.agcoauto.com/content/news/p2_articleid/73) will signal a problem.
http://www.agcoauto.com/content/images/diagnosis/egr_throttle_body_buildup.jpg
A dirty throttle body may keep the computer from relearning idle. Idle memory adapted to the building layers of debris, in the throttle body, over time. If idle-memory is loss, the PCM may no longer be able to obtain the necessary throttle setting. The engine may stall or idle very low. Correction involves cleaning the throttle and resetting base-idle. Resetting idle may require a scan tool or may occur on its own, after the throttle body is cleaned.
http://www.agcoauto.com/content/images/engine/idle_throttle_body_stop.jpg
Some cable operated throttle bodies have a small screw, near the throttle plate, that may appear to be an adjustment. This screw is NOT an adjustment, only a throttle blade stop. The purpose is to keep the throttle blade from sticking in the fully closed position. Turning this screw will NOT affect idle speed and may cause the throttle to stick, damaging the throttle body.
When idle speed changes significantly or stalling on throttle release occurs, a problem is indicated. Most often an input sensor has failed or the throttle body has a problem. On later model vehicles, a check engine light (http://www.agcoauto.com/content/news/p2_articleid/206) may accompany the issue.
When a vehicle begins to idle rough or stall, the idle system requires service. With the proper knowledge and equipment, most idle problems can be quickly diagnosed (http://www.agcoauto.com/content/How_Much_Is_A_Diagnosis) and corrected. Unfortunately, there is not much that can be done without both.