Symptom: a 94 Accord sedan engine F22B2, come on do not accelerate the phenomenon in a moving way, then slowly turn off, and then not start.
Troubleshooting: After the timing belt, fuel pump, spark plugs and replace one fault persists. Later, for a computer and an engine throttle assembly, fault or not excluded.
This car to conduct a comprehensive inspection system fuel pressure is 280kPa (without vacuum), the ignition timing is correct. Ignition coil, primary resistance of 0.6Ω, secondary to 145kΩ; remove the test well water temperature sensor, cylinder pressure car key programmer normal. Parameters on the above parameters and maintenance manual is basically the same. All the components are all mounted on the car for starting the test, beginning when starting the car chug a few times, has a car meant. Remove the four spark plugs again and found that they were all drowned gasoline. They do with the wind dry flashover test, sparks normal. This car has oil, electric, gas, why not him? The car is equipped with three-way catalytic converter, is not because it is damage caused by this failure? So this device removed. Remove the four spark plug temporarily installed on the car, then put four injector electrode removed. Handlebar accelerator pedal in the end, the throttle fully open, start the engine several times, replace the spark plugs, fuel injectors electrodes. Re-start, the car smoothly, operating normally. Finally, for a three-way catalytic converter and put down for the computer, fuel pump, a throttle mounted on the carriage. After starting the car in normal operation, troubleshooting.
Maintenance Summary: The car does not fire because the three-way catalytic converter is usually BMW ICOM used because of poor fuel quality and not pay attention to the car wash when the water is injected into the three-way catalytic converter, causing it to prematurely damage the exhaust poor. Before starting the engine, remove the spark plug all, four electrodes removed injectors, the throttle fully open, the purpose is to make the cylinder unburned gasoline previously discharged as soon as possible, so that the spark plugs will not continue to be drowned.
http://www.obdnews.com/index.php/bmw-diagnostic-tool/
UK SHIP NO TAX
Monday, October 6, 2014
Digimaster3 Upgrade Instruction Steps
Upgrade instruction: our digimaster3 support upgrate online
Step 1, plug the power supply to digimaster3 and insert the
network cable into the LAN interface of digimaster3.
Step 2, select “Management”
Step 3, select “Update”
Step 4, select “Software Upgrade”
Step 5, the machine is upgrading
Touch screen calibration:
When the touch screen shows not correctly, you can calibrate
it, please refer to the following instructions.
Step 1, select “Stylus Proofreading”
Step 2: use touch pen point at the center of cursor
Step 1, plug the power supply to digimaster3 and insert the
network cable into the LAN interface of digimaster3.
Step 2, select “Management”
Step 3, select “Update”
Step 4, select “Software Upgrade”
Step 5, the machine is upgrading
Touch screen calibration:
When the touch screen shows not correctly, you can calibrate
it, please refer to the following instructions.
Step 1, select “Stylus Proofreading”
Step 2: use touch pen point at the center of cursor
Sunday, October 5, 2014
Beijing BJ2020S type sport utility vehicle starter operation weakness
After BJ2020S a Beijing-road vehicles, the starter is damaged, replace the same model (QD321 type) of the starter, but the re-start starter when loading operation weakness.
Troubleshooting:
(A) Failure Cause Analysis
Replacing the battery is new, the starting power heavy duty diagnostic tool circuit has also been confirmed that it is normal, then the quality is just replacing the new starter has a problem? Needs to be checked.
(2) Troubleshooting Methods
Remove the front cover of the dust jacket starter, starter solenoid when restarting found completely pull the switch, and see a strong spark at the fork. Judgment based on experience, should be the starter failure caused by poor grounding.
To verify this judgment, with a thicker wire overlap between the starter housing and the engine block, when the re-start, fault disappears, indicating that indeed a bad starter Ground.
Remove the starter careful examination, found in the starter drive and flywheel housing cover only parts of the installation mouth thick black paint, which is the cause of bad starter Ground lies.
(3) failure treatment measures
Paint the Department cleaned, re-loading start, starter normal operation, troubleshooting.
Failure Analysis: When the starter factory, outside coated with a layer of protective VAG K+CAN V4.8 paint to prevent rust. When replacing the starter while ignoring the leading end of the starter portion of the cleaning, resulting in a poor and can not start the starter to ground fault.
Tip this example: In the car repair process, we should pay attention to the new replacement parts for inspection and cleaning, but also for testing, if necessary, to ensure good new parts replacement, to avoid failure or left hidden faults after loading.
http://www.uobd2.net/wholesale/car-diagnostic-tool/
Troubleshooting:
(A) Failure Cause Analysis
Replacing the battery is new, the starting power heavy duty diagnostic tool circuit has also been confirmed that it is normal, then the quality is just replacing the new starter has a problem? Needs to be checked.
(2) Troubleshooting Methods
Remove the front cover of the dust jacket starter, starter solenoid when restarting found completely pull the switch, and see a strong spark at the fork. Judgment based on experience, should be the starter failure caused by poor grounding.
To verify this judgment, with a thicker wire overlap between the starter housing and the engine block, when the re-start, fault disappears, indicating that indeed a bad starter Ground.
Remove the starter careful examination, found in the starter drive and flywheel housing cover only parts of the installation mouth thick black paint, which is the cause of bad starter Ground lies.
(3) failure treatment measures
Paint the Department cleaned, re-loading start, starter normal operation, troubleshooting.
Failure Analysis: When the starter factory, outside coated with a layer of protective VAG K+CAN V4.8 paint to prevent rust. When replacing the starter while ignoring the leading end of the starter portion of the cleaning, resulting in a poor and can not start the starter to ground fault.
Tip this example: In the car repair process, we should pay attention to the new replacement parts for inspection and cleaning, but also for testing, if necessary, to ensure good new parts replacement, to avoid failure or left hidden faults after loading.
http://www.uobd2.net/wholesale/car-diagnostic-tool/
Friday, October 3, 2014
Corse (Corsica) car engine cold start problems
Symptom: cold start problems, unstable idling after starting, idling normal hot car.
Troubleshooting: This phenomenon preliminary judgment is affected idle speed stepper motor failure, the need for dismantling. Turn the ignition switch, remove the stepper heavy duty diagnostic tool motor, found the head cone valve and seat stepper motor idling intake clogged with oil, the impact of idling condition into the air, the oil washed with dry cleaners, installed good stepper motor, start the engine, smooth idling, failure to eliminate.
Failure Analysis: This car idle condition according to the computer by the engine battery voltage, coolant temperature, engine load and engine speed to calculate the optimum idle speed stepper motor position and instructs the cone valve with a small amplitude, or the stepper motor forward or back change idle inlet section to control the engine idle smooth operation.
During cold start, the coolant temperature is low, the engine computer instruction fuel injection pulse width is increased, while the idle speed stepper motor command conical valve opening increases, the high idle speed of the engine operation, the temperature was gradually car key replacement increased as the cooling liquid, spray oil width decreases, idle speed stepper motor conical valve opening is reduced accordingly, to keep the engine at low idle.
Such failure is due to the oil cone valve and valve seat accumulation, reducing the adjustable range cone valve, resulting in cold start, the intake air is reduced accordingly, and the emergence cold start problems and not idling stable.
http://www.obdnews.com/index.php/benz-diagnostic-tool/
Troubleshooting: This phenomenon preliminary judgment is affected idle speed stepper motor failure, the need for dismantling. Turn the ignition switch, remove the stepper heavy duty diagnostic tool motor, found the head cone valve and seat stepper motor idling intake clogged with oil, the impact of idling condition into the air, the oil washed with dry cleaners, installed good stepper motor, start the engine, smooth idling, failure to eliminate.
Failure Analysis: This car idle condition according to the computer by the engine battery voltage, coolant temperature, engine load and engine speed to calculate the optimum idle speed stepper motor position and instructs the cone valve with a small amplitude, or the stepper motor forward or back change idle inlet section to control the engine idle smooth operation.
During cold start, the coolant temperature is low, the engine computer instruction fuel injection pulse width is increased, while the idle speed stepper motor command conical valve opening increases, the high idle speed of the engine operation, the temperature was gradually car key replacement increased as the cooling liquid, spray oil width decreases, idle speed stepper motor conical valve opening is reduced accordingly, to keep the engine at low idle.
Such failure is due to the oil cone valve and valve seat accumulation, reducing the adjustable range cone valve, resulting in cold start, the intake air is reduced accordingly, and the emergence cold start problems and not idling stable.
http://www.obdnews.com/index.php/benz-diagnostic-tool/
Thursday, October 2, 2014
Toyota small passenger charging indicator light not be quenched
Symptom: a Toyota passenger cars, closed switches switch, charging indicator light lights; After starting, charging indicator light reddish; increase engine speed, charging indicator light brightness actually strengthened.
Failure Analysis and Maintenance: Toyota minibus double set of double-stage vibration obd2 scan tool regulator, a voltage regulator for the engine group, a group of charging indicator light relay. When the switch is closed switches, battery current through the charging indicator light, charging indicator light relay normally closed contact and grounding, charging indicator light, shiny; after starting, charging indicator light reddish, indicating that the relay is normally closed contacts break open, then it indicates that the generator has power, in which linear voltage-controlled charging indicator light relay coil is energized and suck the next boom contact, then the generator output current through the charging indicator light, festival and take the pressure coil iron, in charging indicator light circuit in series with the coil due to an increase of loop resistance, so the charging indicator turns reddish-like, is a normal state. When the speed increases, the generator voltage increases, broken appliances normally open contacts are closed, the generator output current through the charging indicator light, the relay is closed normally open contacts and went back to the generator output terminal ends of the same potential without voltage, so the charging indicator light should go off. The charging indicator light not only do not go out, but the brightness increases; measured with a multimeter DC voltage profile generator vcs scanner voltage, the results voltages up to 14.5V, indicating that the generator is working properly, the cause is charging indicator light relay normally open contact in the closed state under the conductive bad, or normally closed contacts connected to the output of the generator welding head off. After examination, the connection joints in good condition; check charging indicator light relay normally open contacts, found that the contact oxidation, poor conductivity.
After sanding the contact charging light goes out, troubleshooting.
http://www.uobd2.net/wholesale/car-diagnostic-tool/
Failure Analysis and Maintenance: Toyota minibus double set of double-stage vibration obd2 scan tool regulator, a voltage regulator for the engine group, a group of charging indicator light relay. When the switch is closed switches, battery current through the charging indicator light, charging indicator light relay normally closed contact and grounding, charging indicator light, shiny; after starting, charging indicator light reddish, indicating that the relay is normally closed contacts break open, then it indicates that the generator has power, in which linear voltage-controlled charging indicator light relay coil is energized and suck the next boom contact, then the generator output current through the charging indicator light, festival and take the pressure coil iron, in charging indicator light circuit in series with the coil due to an increase of loop resistance, so the charging indicator turns reddish-like, is a normal state. When the speed increases, the generator voltage increases, broken appliances normally open contacts are closed, the generator output current through the charging indicator light, the relay is closed normally open contacts and went back to the generator output terminal ends of the same potential without voltage, so the charging indicator light should go off. The charging indicator light not only do not go out, but the brightness increases; measured with a multimeter DC voltage profile generator vcs scanner voltage, the results voltages up to 14.5V, indicating that the generator is working properly, the cause is charging indicator light relay normally open contact in the closed state under the conductive bad, or normally closed contacts connected to the output of the generator welding head off. After examination, the connection joints in good condition; check charging indicator light relay normally open contacts, found that the contact oxidation, poor conductivity.
After sanding the contact charging light goes out, troubleshooting.
http://www.uobd2.net/wholesale/car-diagnostic-tool/
Wednesday, October 1, 2014
Audi A6 2.4 sedan is sometimes difficult to start
A super-mileage 230,000 km, equipped with BDW engine, matching 01J-type transmission 2007 Audi A6 2.4 sedan. Users reflect: sometimes difficult to start the car.
Check Analysis: test maintenance personnel discovered that the car was at the time of starting the engine shake, similar problems caused by dirty throttle. Open the oil cap and found no abnormalities. Connection failure diagnostic engine fault code read, display mb star c3 diagnostic tool camshaft position sensor failure, active static. When the engine is idling, found that work is relatively stable. At this point to read the throttle opening, no obvious abnormalities. Read 15 and 16 sets of data, found that 4,5 and 6-cylinder are different degrees of fire, and 1, 2 and 3 cylinder misfire is 0.
Analysis, 4, 5 and 6 cylinder are fire, indicating the left side of the cylinder into the gas shortage could be camshaft phase adjustment function failure.
Troubleshooting: Replace camshaft adjustment solenoid valve troubleshooting.
Additional Description: This car is not a line fault solenoid valve, if so, the system will give the circuit open / short fault codes.
http://www.uobd2.net/wholesale/obd2-code-scanner/
Check Analysis: test maintenance personnel discovered that the car was at the time of starting the engine shake, similar problems caused by dirty throttle. Open the oil cap and found no abnormalities. Connection failure diagnostic engine fault code read, display mb star c3 diagnostic tool camshaft position sensor failure, active static. When the engine is idling, found that work is relatively stable. At this point to read the throttle opening, no obvious abnormalities. Read 15 and 16 sets of data, found that 4,5 and 6-cylinder are different degrees of fire, and 1, 2 and 3 cylinder misfire is 0.
Analysis, 4, 5 and 6 cylinder are fire, indicating the left side of the cylinder into the gas shortage could be camshaft phase adjustment function failure.
Troubleshooting: Replace camshaft adjustment solenoid valve troubleshooting.
Additional Description: This car is not a line fault solenoid valve, if so, the system will give the circuit open / short fault codes.
http://www.uobd2.net/wholesale/obd2-code-scanner/
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