Posts tagged with "launch x431"

Launch X431 Firmware Update for Err DiagnoseMain ID: -5

This write-up about Launch X431 V diagnostic firmware update manual will help to solve the error: launch x431 Err DiagnoseMain ID: -5.


Launch x431 error message:


DiagnoseMain Err ID: -5

Failed to obtain firmware information.

Possible reasons:

1 Firmware does not work normally. Please retry after power off and on again

2 Firmware program is abnormal. Please update it

3 Firmware type is incorrect. Please contact the local dealer….



How to solve Launch x431 DiagnoseMain Err ID: -5:

(also How to update Launch x431 firmware)


Go to Menu
then Firmware Update




Launch x431 firmware update successfully.

Now the newest x431 v 8 inch firmware version is 11.49.


The x431 launch firmware update guide is for ORIGINAL Launch x431 scan tools at .




How to choose OBD Diagnostic Scan Tool for Malaysian cars

Thread: Proton, Perodua Malaysian cars diagnostic tools wanted? Which OBD2 car diagnostic tool is better for Malaysian cars? Xtuner E3 (also called Vpecker Easydiag)? Autel Maxisys MS908 tablet? Launch X431 scan tool?
Here is the buying guide of obdii diagnostic tools for Malaysian cars, especially for Proton, Perodua.


Proton obdii diagnosis: with Xtuner E3 (Vpecker Easydiag)? Autel MS908? Launch X431 pad?
System Xtuner E3 (Vpecker) Autel MaxiSys MS908 Launch X431
launch-x431 TA2000 Yes No Not all
ABS 9.0 Yes No Yes
AC3 Yes Not all Yes
AC6 Yes Not all Not all
ACU3 Yes No Yes
Airbag AB 10.0 Yes No Not all
Airbag AB 2.0 Yes No Not all
Airbag AB 2.1 Yes No Yes
BCF Continental Yes Yes Yes
BOSCH Yes Not all Not all
Central Electronics CE 3.0 Yes No No
Central Electronics CE 4.0 Yes No No
CVT Punch Yes No Not all
Easy-U 1.0 Yes No Yes
EMS EasyU IAFM+ 1.0 Yes No Yes
EMS400 Yes Not all Yes
EMS700 Yes Not all No
EMS700 CPS No Yes Not all
ESP 9.0 Yes No Yes
ESP TRW EBC450 Yes Not all Yes
Gearshift Lock 4.0 Yes No Yes
Instrument cluster PX Yes No No
MMC Yes Not all Not all
MMC_EPS Yes Yes No
MMC_ISO Not all Not all Not all
Power Window(AS) Yes No Yes
Power Window(DR) Yes No Yes
Power Window(RL) Yes No Yes
Power Window(RR) Yes No Yes
RENAULT12 Yes Not all Yes
Renault18 Not all Not all Not all
Rls Yes No Yes
Segem S2000 Yes No Not all
SIEMENS Yes Not all Not all
SUM OFF Yes No Yes
TEVES MK20 Yes Not all Not all
TEVES MK60 Yes Not all Not all
Transmission(ISO) No No Yes
Transmission(Mut) No No Yes
TRW Yes Not all Not all
Perodua obd2 diagnostics: using Xtuner E3? Autel MS908? Launch X431 scan tool?
System Xtuner E3 (Vepecker) Autel Maxisys MS908 Launch X431 V
Engine (3SZVE/PM2M603/10/2011-) Yes No No
Engine (ED-DE/L201/JUN.04-) Yes Yes No
Engine (ED-DE/L703/Oct. 03-) Yes Yes No
Engine (ED-VE/L252/Apr.07-) Yes No No
Engine (EF-VE/L250/Apr.07-) Yes No No
Engine (EJ-DE/L701/Aug.01-Oct.03) Yes Yes No
Engine (EJ-DE/L701/Oct.03-) Yes Yes No
Engine (EJ-DE/L901/Jun.00-Jun.04) Yes Yes No
Engine (EJ-DE/L907/Jun.04) Yes Yes No
Engine (EJ-DE/L251/Apr.07-) Yes No No
Engine (EJ-DE/L701/Dec.01-) Yes Yes No
Engine (EJ-DE/L901/Oct.00-) Yes Yes No
Engine (EJ-VE/M302/May.02-) Yes Not all No
Engine (HC-E/J100/Aug.98-May.03) Yes Yes No
Engine (K3-VE/J102/May.03-) Yes Yes No
Engine (K3-VE/M301/May.05-) Yes Not all No
A/T (K3-VE/J102/May.03-) Yes Yes No
A/T (K3-VE/M301/May.05-) Yes Yes No
ABS (3SZVE/PM2M603/10/2011-) Yes No No
ABS (ED-VE/L252/Apr.07-) Yes No No
ABS (EF-VE/L250/Apr.07-) Yes No No
ABS (EJ-DE/L251/Apr.07-) Yes No No
ABS (EJ-VE/M302/May.02-) Yes No No
ABS (K3-VE/J102/May.03-) Yes Yes No
Airbag (3SZVE/PM2M603/10/2011-) Yes No No
Airbag (ED-VE/L252/Apr.07-) Yes No No
Airbag (EF-VE/L250/Apr.07-) Yes No No
Airbag (EJ-DE/L701/Aug.01-Oct.03) Yes No No
Airbag (EJ-DE/L701/Oct.03-) Yes No No
Airbag (EJ-DE/L901/Jun.00-Jun.04) Yes No No
Airbag (EJ-DE/L251/Apr.07-) Yes No No
Airbag (HC-E/J100/Aug.98-May.03) Yes No No
Airbag (K3-VE/M301/May.05-) Yes No No
Chassis/steering (3SZVE/PM2M603/10/2011-) Yes No No
Gear Control (3SZVE/PM2M603/10/2011-) Yes No No
Gear Control (EJ-DE/L251/Apr.07-) Yes No No
Gear Control (K3-VE/J102/May.03-) Yes No No
Gear Control (K3-VE/M301/May.05-) Yes No No
Immobiliser (3SZVE/PM2M603/10/2011-) Yes No No
Immobiliser (EJ-DE/L901/Jun.00-Jun.04) Yes Not all No
Immobiliser (EJ-DE/L701/Dec.01-) Yes Yes No
Immobiliser (EJ-DE/L901/Oct.00-) Yes No No
Immobiliser (EJ-VE/M302/May.02-) Yes Not all No
Immobiliser (K3-VE/M301/May.05-) Yes Not all No
SRS (3SZVE/PM2M603/10/2011-) Yes No No
SRS (K3-VE/J102/May.03-) Yes Not all No
SRS (EJ-VE/M302/May.02-) Yes Yes No
SRS (K3-VE/M301/May.05-) Yes Not all No

In summary, Xtuner E3 scan tool wins, in Malaysian cars diagnostics!

XTUNER E3 Diagnostic System Coverage

ME-Motor electronics, CDI-Common Rail Diesel Injection, ETC-Electronic transmission control, ESM-Electronic selector module, SBC – Sensotronic Brake Control, ESP-Electronic stability program, BAS-Brake assist, Suspension, TPC-Tire pressure monitor, Airbag, CGW-Central gateway, EIS-Electronic ignition switch, OCP-Overhead control panel, UCP-Upper control panel, XALWA-Xenon headlamp, HRA-Headlamp range control, ATA-Anti-theft alarm system, IC-Instrument cluster, ASSYST-Active Service System, SCM-Steering column module, EPS-Electrical power steering, PTS – Parktronic system, EPB-Electric parking brake, COMAND/AUDIO, CD/DVD, TV tuner, CTEL-Cellular telephone, DCM-Door control module, ESA driver-Electric seat adjustment driver, ESA passenger-Electric seat adjustment passenger, AAC-Air conditioning, WSS-Weight sensor system, SVMCM-Special vehicle multifunction control module, etc.


XTUNER E3 WiFi Scanner Function Coverage

Quick Test, Read ECU Info., Read DTCs, Erase DTCs, Clear learning value, Data Stream, Actuations, Read freeze frame data, Read/Write VIN, Basic Reset, Control unit adaptations, Throttle adaptations, Air bleeding, Level calibration, Theft alarm Reset, Key programming, Oil change, Idle speed learning, Idle speed Adjustment, Ignition timing adjustment, Camshaft timing control learning, Maintenance functions, ECU Initial startup, ECU initialization, etc

Launch X431 V vs. X431 V Pro vs. X431 5C Pro

Here comes the newest Launch tablet diagnostic system: 2017 Launch X431 V 8″ inch wifi/Bluetooth tablet PC.


Note: Launch X431 (Item#183-*) PAD series perform almost the same functions, but differ in hardware configurations.

See the table comparison below:

Launch X431 5C Pro vs. Launch X-431 V Pro vs. new Launch X431 8″ Levono Tablet PC

Item Comparison Launch X431 5C Pro (Item# SP183-C) Launch X431 V Pro


(Item# SP183)

New Launch X431 V 8 inch(Item# SP183-D)
Image Outlook  launch-x431-5c-pro  launch-x431-v-pro-sp183  launch-x431-v-sp183-d
Main Unit Inch 7 inch 7 inch inch
Color Red Red Red
IOS Android 4.0 Android Android 5.0.2
Pixel 1024*600 pixel 1024*600 pixel 1280*800 pixel
Processor Dual core 1.0Ghz Dual core 1GHZ Quard core 1.3Ghz
RAM 512MB 512MB 1GB
Storage 2GB (can be 32GB) 2GB(can be 32GB) 16GB (can be 32GB)
Battery 3000MA 3000MA 4290MA
Camera Rear 200W Front 300W


Rear 200W

Front 200W;


Rear 500W

Accessories Connector pcs 14 pcs 14 pcs 14 pcs
Cabe pcs 13 pcs 13 pcs 12 pcs
OBDII 16 About 8-10cm



About 10cm



About 80cm
Diode pcs 4 pcs 4 pcs 4 pcs
Charger Litter Litter Litter
Bluetooth connector Red & small;


On the main unit

Red & big under the main unit Black & big;


Under the main unit

Paper files Package list Red & yellow paper Red & yellow paper White & greenpaper
Guide Old version Old version New version
Manual No No Yes
Package Package Old version Old version New version
Upgrade One-click Update Yes Yes Yes
Free Update Online 1 year free update online 2-year free update online 2-year free update online

From the table we can see 2017 new released Launch x431 v has been improved in firmware capacities.


Details of 2017 Launch X431 V (X431 Pro) …here you go.


Launch X-431 V can diagnose the electronic control system of prevailing vehicle models covering Asian, European, American and Chinese. Full range car models and full car system diagnosis make it a professional automotive diagnostic tool.
– With special function: BMW idle study, BMW injection rate adjustment, BMW battery replacement, Nissan matching key.


– Model: Benz, BMW, Ford and other mainstream models, also support IRKIA, PERODUA, Proton, TATA, Maruti, Lancia and other domestic model from all over the world.

launch x431 pro for sale price: US$799

How to use Launch X431 HD Truck Diagnostic Module

Original Launch X431 HD Heavy duty Truck Module is a new generation heavy-duty truck fault diagnostic tool developed by Launch Tech regarding internet application on the basis of Android OS. It communicates with X431 V/X431 V+ PRO3/X431 PAD II through Bluetooth to achieve fault diagnosis for various car models and full systems. .
Main Features:
Wireless Bluetooth Diagnosis
Host machine and diagnostic connector adopt Bluetooth connection, making diagnosis more convenient.
Support various vehicle models
34 model software, support more than 60 car models. Moreover, the software is being continuously developed.
Industrial shockproof design
Industrial shockproof design is perfect for the working environment in repair shops.
Various configurations are available for selection
Suppose you are going to purchase heavy-duty truck diagnostic tool, you can choose X-431 PRO3 or X-431 PAD II as host machine. If you have already bought X-431 PRO3 or X-431 PAD II diesel configuration, now you want to test truck, just buy a heavy-duty truck module.
Full comprehensive diagnostic software functions.
Wide diagnostic software coverage.
Accurate test data.
Software based on Android, matching with more diagnostic hosts.
Release new software version timely to let customers enjoy latest service.
Able to test truck with 12V or 24V battery diesel engine. When testing 24V truck, battery conversion is not required.
Diagnostic hardware is designed according to international standard, compatible with diagnostic interfaces of worldwide models.

Supported Brands

  • MAN
  • DAF
  • MACK
  • HINO
  • FUSO
  • UD
  • Chinese Heavy duty Truck
How to Download and Install X-431 HD Module App?
1. Visit the LAUNCH website and download the application corresponding to X-431 HD module;
Note: If downloading using the diagnostic tool please make sure Wi-Fi has good or strong signals.
2. Follow the on-screen instructions to install it. Once installation is complete, an application icon will appear on the HOME screen.
How to Activate Launch X-431 HD Module?
After purchasing X-431 HD module, you have to activate it before use.
Follow the steps below to proceed:
1. Launch the application, and tap to enter;
2. Tap “Profile” from the pull-down menu, and then tap “Connector Activation”;
3. Input the Serial Number and Verification Code, which can be found in the included password envelope. Tap “Activate”.
How to connect X-431 HD to OBD II vehicle?
Follow the steps described below to proceed:
1. Locate vehicle’s DLC socket. The DLC is usually located 12 inches from the center of the instrument panel (dash), under or around the driver’s side for most vehicles. If Data Link Connector is not located under dashboard, a label should be there telling location. If the DLC cannot be found, refer to the vehicle’s service manual for the location.
2. Connect one end of the main cable to the diagnostic socket, and then connect other end to the vehicle’s DLC (For non-16 pin DLC, you need to choose the corresponding diagnostic connector). See Fig. 5-3.
How to connect X431 HD Module to non-OBD II vehicle?
Choose one of the following to connect non-OBD II vehicle:
1. Via Cigarette Lighter
2. Via Battery Clamps Cable

Launch X431 HD Technical Data

  • Working Temperature: -20°C ~ 70 °C
  • Storage Temperature: -30°C ~ 80 °C
  • Relative Humidity: 10% ~ 80%
  • Working Voltage: 9-36V
  • Product Size: 178 x 115 x 50.5 mm
  • Product Weight: 487g
  • Communication: USB, Bluetooth, Serial Port
  • Standby Power Consumption: 1.44W

Launch X431 HD Module Truck Diagnostic Software Listing:

1pc x Heavy-duty bluetooth module
1pc x Demo V14.73
1pc x JMC V12.35
1pc x ASTRA V10.42
1pc x BREMACH V10.06
1pc x DAF V11.21
1pc x ERF V10.05
1pc x for FUSO V16.02
1pc x for MACK V10.32
1pc x for MAN V14.71
1pc x for SCANIA V13.51
1pc x WP Diesel Car V10.40
1pc x X431 Diesel Car V1010
1pc x X431,CREDO Heavy Duty V10.20
1pc x X431,IRISBUS Heavy Duty V10.02
1pc x X431,IRIZAR Heavy Duty V10.02
1pc x X431,NEOPLAN Heavy Duty V10.04
1pc x X431,SETRA Heavy Duty V11.00
1pc x X431,SITCAR Heavy Duty V10.05
1pc x X431,UD Truck 2F JP diesel V10.40
1pc x X431, BONLUCK BUS V10.05
1pc x X-431,DongFeng YUFeng V10.03
1pc x X431, for Renault Truck V11.30
1pc x X431, for SUNLONG BUS V10.10
1pc x X431, for SUNWIN BUS V10.01
1pc x X431,ZHONGTONG BUS V10.01
1pc x for Merce.des Ben.z Heavy Duty V16.30
1pc x for FOTON AUMAN V13.40
1pc x for Volvo Heavy Duty V14.83
1pc x for Cummins Engine V14.41
1pc x for Hino Motors V16.50
1pc x for Isuzu Heavy Duty V14.10
1pc x for Hyundai Heav Duty V11.06
1pc x for IVECO Heavy Duty V18.87
1pc x China Heavy Duty V11.21
1pc x Heavy Duty Standard Diagnostic V11.11

Launch X431 V Pro Repair BMW E90 FRM Module

Many BMWs have a Foot Well Module or FRM that controls electrical functions such lighting.

This is the module that sits on the drivers side foot well, behind the hood release (in US cars).


Which vehicles are affected?
E90 Series BMW 3 Series Cars
E70 X5 Series
E81,E82,E87,E88 1 Series

What Faults are covered?
Various faults including
Reversing Lights Not Working
Number Plate Lights Not Working
1 or more sidelight,headlight,brake or tail lights not working



What causes these problems?
The FRM Footwell Module monitors & detects short circuit’s either in the wiring (common in the
E90 boot area) or a short circuit bulb. If you do not get the fault repaired quickly then the module
will eventually permanently switch off that particular output. Once it’s switched off it doesn’t make
any difference if you have repaired the fault the light will stay off.


BMW mechanic replace the complete FRM module at a cost of several hundred pounds including coding the module to your car. Here is the procedure in action on a reset we did to a E90 recently.


Load/re-write the original eeprom dump (parts requires coding as well)

Vehicle model example:
2011 BMW 3-series E90


Read FRM module CPU data with VVDI ProgXprog or CG100 ecu programmer. Follow the wiring diagram and read eeprom data.
CPU type 9S12XEQ384



You can see all data shows F, blank data, CPU data may has been lost

Load the original eeprom dump and re-write to CPU.



When do you need coding/don’t need coding?
There are many variants of FRM (Footwell Module) FRM1, FRM2, and FRM3 which all have different controls and functions such as lights, windows and doors. If the eeprom data is exactly the same as your car original data, you do not need coding.  If fog light or aperture still flashes after load original data, you need to do coding.


Device optional:

BMW ICOM Engineering software Ncs expert, Launch X431 V proAutel Maxisys Pro MS908P etc



Here is the instruction of Launch X431 Pro, it is easier than ICOM engineering software.

Select vehicle make: BMW
Select Coding/Programming


Select detail model: 3 series E90

Select data stream: FRM Module has been replaced


Select FRM module


Download file


Flash/Reset FRM




FRM module is repaired.

How to use Launch X431 SN smartbox

Here is the user solution of how to repair Launch X431 smartbox board for Launch devices with serial number 98064xxxxxx or 98024xxxxxxx.


When to repair Launch x431 smartbox board?
Launch X431 does not communicate with the car. Turns on smart box resets with success but when check if ignition is on, no lights on the launch communication error.

Only power led lights up, so probably the smartbox died.


How to repair smartbox pcb?
start software then >demo > self test > and you will see if working correctly
to me sounds like some of relays is not working. will advice to do hot gun job first and re-solder all relays. (white square boxes)


Is not something which you can test yourself. Each relay works only when is simulated only certain protocol so you have hundreds of combinations. Re assuming, without protocol simulator only way of testing them is measure ohms and checking if they click and reconnect signal. Make sure that you have knowledge how to use ohm meter, and you have stable power supply of 4.5V. And make sure ‘+’ goes to correct place. Otherwise it will be costly repair.


Then check caps with beep scale, if its beeps and number is same as connected two tester pin, then you are close to fault.



Try the method above OWN YOUR OWN RISK; but it has helped the user with Launch x431 gx3 with serial umber 980640000100


But if your pcb still doesn’t work or you’re not good at pcb modification, you can buy a new original smartbox board, Launch-made. offers the Original Launch X431 Scanner Smartbox board:






This X431 Smartbox can only used on Launch devices with serial number 98064xxxxxx or 98024xxxxxxx.

Devices includes Launch X431, Launch X431 Super Scanner, Launch X431 GX3 and Launch X431 Master at

Can Launch X431 program Mitsubishi Outlander key?

Our domestic engineer has hooked up the Launch X431 V (X431 Pro) to program Mitsubishi Outlander 2009 all key lost successfully. Yes, with Launch X431 scanner (many features/functions you have not found yet).


The post is put just for education purpose. You are at your risk.


Pre-programming cation:

Unplug the little key, then insert into the smart card. Then plug the smart key into ignition and turn it on.


1. The car owner required to replace new car lock and smart card cause all key have lost. Then connect Launch X431 system with vehicle via OBD diagnostic socket. Turn ignition switch to ON position.
2. Power on the scanner and enter into X431 Pro menu. Select vehicle make: Mitsubishi, select “Mitsubishi V28.10 full system”


3.Select after 2006 (Mitsubishi 2006 later)


4.Select Mitsubishi region : General (Japan,America,Europe,Australia optional)

5. select vehicle year: 2009

6. select vehicle model:Outlander


Immo system–keyless entry registration. The X431 will ask to enter password (default 8A32 8A42)

Check and comfirn the password you entered. Start programming key.

select TSCHZL, the x431 will prompt key number 1, insert the key and press YES.


Register immo key 1 complete. The system will prompt if you need to program second key.

Press YES to program another key. The X431 will display how many immo key to be programmed and auto enter remote key programming menu. Wait 1 minute(do not turn ignition off) after press YES button.
Program Remote:

After program second key, press Cancel to start programming remote.

Press Yes, press the remote key on ignition switch for twice, if the system display the function is invalid (stay calm), turn ignition on and off for twice. Smart Start Test OK


Tape OK button to start KOS key registration. Register the key within 1 minute (Do not turn ignition off).

Know additional about Launch X431 Creader VIII

Nowadays, folks pay back a lot more interest to vehicles with the progress of economic. Even though the cars types tend to be more many, so more car diagnostic tools are produced to appropriate with all those cars to meet the need. Such as Launch X431 Creader VIII.


Much on the vehicle prognosis is about the issue with the engine, while the frame may well even have sensors. A sensor would hold info on the operation from the portion it is in. The information are inside of a form of codes that could be downloaded by a mechanic through the inspection. The moment downloaded, the codes might be translated to find out what on earth is incorrect using a certain element of a automobile.

Therefore, diagnostic software package as part of your auto just isn't ample. It ought to include obd2 device that may examine the data specified via the diagnostic computer software. This device is named an OBD-II scanner or just a Launch code reader. An proprietor should purchase this tool to ascertain the problems of their car. This can be preferable to going to a mechanic, whose examination may expense quite a bit.

Automotive engine piston rings antifriction what measures?

Engine fgtech piston ring antifriction measures

The piston ring is probably the crucial parts on the engine, its perform a direct impact on the overall performance on the engine. , Piston rings and sporting parts, maintenance piston rings, piston usually hanging out, generally the fix or substitute with the piston ring time as the 1st engine overhaul deadline.

In recent years, due to the engine towards the development of high-speed and strengthen the course, the piston rings doing work problems increasingly harsh, its dress in resistance is also place forward increased requirements.

Piston ring put on and effect components

Car engine involving the piston ring and cylinder liner dress in has the following qualities:

1. Piston rings for reciprocating motion in between the upper and lower dead point, the velocity modifications in the resting state to as much as about 30m / s, and so forth to create any large changes.

2. Reciprocate fgtech when, in the functioning cycle of an consumption, compression, the acting and exhaust stroke, cylinder pressure varies tremendously.

3. Since the influence from the combustion stroke, the motion with the piston ring is often performed at substantial temperature, particularly the primary ring, in a high temperature and large stress and also the combustion merchandise produced from the chemical impact, the film is tough to set up, so achieve complete Lubrication is much more challenging, and generally in the essential state of lubrication.

Put on mechanism, piston ring dress in might be divided into the normal dress in and tear, fuser put on (scratches, abrasions), abrasive put on and corrosion and put on. But these indications of put on is not going to appear alone, but simultaneously the presence and influence each other. Piston ring wear is usually divided to the put on components, wear and upper and lower finish with the sliding surface put on. On the whole, the sliding surface wear than the upper and lower end wear, sliding surface melting put on and abrasive put on; upper and reduced end by the piston reciprocating effect put on largely.

The maximum put on of your piston ring sliding surface generally seem dead center place from the cylinder, because the premises through the large temperature gas, the destruction on the oil movie, leading to straightforward fuser circumstances, therefore accelerating the wear of your piston rings. Normally termed ordinary dress in really contains Fuser minor put on and abrasive wear. Every track ring the quantity of wear from the sliding surface is just not the identical, the maximum dress in quantity of the first ring, the second ring all over roughly half in the very first track, a minimum the amount of wear on the oil ring. Steyr WD615 engine the piston ring just after 500h after the dependability test, the initial ring opening gap wear 0.4 ~~ 0.6mm, the second opening gap dress in of 0.25 ~ 0.4mm, the oil ring opening gap dress in 0.3 ~ 0.55mm. But at times the oil ring wear compared to the middle couple of street ring also large, that is as a result of distribution on the cylinder surface with the lubricating oil as well as influence of adsorption of impurities.

The end galletto 2 encounter on the put on of the piston rings and down largely because the rigid residue and oil fuel entering into the dust particles through the ambiance is formed while in the vertical finish surface of the mechanical polishing, in essence, is definitely the abrasive put on. However, when appear abnormal thermal deformation from the piston ring groove backlash variable hrs, might also take place fuser put on.

Influence piston ring wear of a lot of aspects, including the materials and form of your piston ring and cylinder liner material and structure of the piston, the state of lubrication, the structural form from the engine (s), operating ailments, fuel and lubricating oil high quality is usually a big factor. Needless to say, during the exact same cylinder, the lubrication state with the piston ring put on is definitely the greatest, might be mentioned piston ring wear largely relies on the state of lubrication. Excellent torus lubrication of a uniform layer of oil film involving the sliding surfaces, on the other hand, this case won't, in actual fact, exist, specially the very first ring, due to the higher temperatures, it truly is hard to establish a greater lubrication state .

Piston rings antifriction measures

Simply because many elements have an impact on the put on in the piston rings, and these things are sometimes intertwined. In addition, unique engine types and problems of use, piston ring dress in can differ significantly, and as a result can't depend on improved piston ring structure and elements to remedy the trouble, the main can proceed from the following elements: the piston rings and cylinder liners resources and very good match; surface treatment method; structural state; lubricants and additives pick out; cylinder liners and piston assembly and operation heat deformation.

Mazda unstable idle right after cleansing throttle

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

Pick-up: Take out the battery line to clear the original value of mastering idle returned to usual following the re-fitted. But driving some days following the emergence of minimal idle pace, clean throttle once again, and clear away the idle speed motor, this car idling motor rotary valve, cleansing the valve is closed, probably on account of this cause isn't cleaned clean idling motor is then removed from your throttle, and plug within the idling motor plug, turn the ignition switch, once the valve is open, refitted and re-cleaning agent valve, commissioning, standard idle.

Immediately after VAS 5054A numerous days of driving this automobile once again to restore the failure at this time is the idle velocity is also reduced, cold higher idle, reduced idle following scorching car or truck, barely capable to live auto. Fault code read through through the decoder, show "system normal". See the information stream, the information flow is just not quite exact, no reference value.

Soon after inspection, observed that this motor vehicle is equipped with exhaust gas recirculation gadget suspect this device hairpin, pass into the exhaust fuel for the intake manifold in the idle state, brought about by idling too reduced phenomenon.

Then take out ELM327 the valve checked and located that indeed, such as analysis, this valve is eliminated, then the motor a part of the seat part separate, direct hand pressure acting spool, certainly hairpin indicators, cleansing and thread loose agent lubricated, can be quickly pressed, mounted retest the car or truck, the engine idle velocity back to standard.

Summary: This vehicle is definitely the first failure is higher idle speed, the reason just isn't totally cleaning the throttle and idle valve, idle pace is also minimal failure later phenomenon, the idle reduced failure as the exhaust gas recirculation valve closed lax, leading to idling some exhaust fuel immediately after combustion is involved with the combustion induce unstable engine do the job, cause idling adverse. Real repair usually encountered this erratic idle poor fault phenomena, underneath usual conditions, can be regarded as the exhaust gas recirculation valve closed lax, to observe the construction from the versions later on upkeep, should the exhaust gasoline The recirculation device, take note of its servicing inside a timely method, in order to avoid very similar failures.

Theme: Fresh Print by BlogBaker. Powered by BlogBaker.