Attach the gauges towards the A/C program by locating the low-pressure and high-pressure service ports. The low-pressure port could be discovered on the low side line in between the accumulator (at times on the accumulator) and the compressor. The accumulator is the cylindrical aspect attached towards the program near the passenger side from the firewall.
The high-pressure port is positioned on the high side line amongst the condenser and evaporator. The condenser would be the radiator-like aspect situated within the front on the car, plus the evaporator is situated beneath the dash.
Be sure the valves are closed on the gauge assembly, and attach the quick-disconnect hoses for the service ports.
Start the engine and set the A/C controls to max A/C, medium blower speed and recirculating air. Permit the method to run for 5 minutes for pressures to stabilize.
Normal gauge readings will be in between 30 and 45 psi on the low side, and 200 to 350 psi on the high side. The expansion valve can fail in one of two ways. When stuck open, it allows two much refrigerant flow, and a drop in high side pressure . A gauge reading of less than 200 psi on the high side will be seen when this happens. When stuck closed, a higher than normal high side reading will be seen. Typically, this will be over 400 psi and climb until the high-pressure switch shuts down the program. Very low or very high readings on the high-side gauge indicate a faulty expansion valve.
2012年8月28日星期二
Tips on how to Diagnose a Subaru
Open the driver's side door and sit in the driver's seat. Uncover the scanner junction panel underneath the steering wheel. Open the panel and connect the OBDII scanner tool to the junction.
Insert the Subaru car keys in to the ignition switch. Turn it to the "On" position but do not start off the engine . Let the OBDII scanner communicate with the car's onboard computer system and read codes stored within the memory. Appear in the scanner because it displays the codes picked up. Write down the code numbers on a notepad using a pen, even if the scanner tells you what the code stands for -- you will need it later to describe to a mechanic.
Turn the auto ignition back towards the "Off" position and remove the car or truck keys from the Subaru. Connect for the Internet using a computer system and look up the codes you wrote down if your scanner doesn't describe them in detail. Write down the descriptions on your notepad.
Reconnect the scanner towards the Subaru and turn the car or truck for the "On" position again. Direct the scanner to wipe the existing codes inside the vehicle . Turn the auto "Off" and remove the scanner. Turn on the car or truck and its engine and drive it around to try and get the auto to turn on its check engine light again. Repeat the code reading process on the Subaru to confirm the same codes are being signaled by the engine sensors and the first time was not a blip. Take the car or truck to a mechanic with your confirmed information and direct the shop to make the necessary repairs.
Insert the Subaru car keys in to the ignition switch. Turn it to the "On" position but do not start off the engine . Let the OBDII scanner communicate with the car's onboard computer system and read codes stored within the memory. Appear in the scanner because it displays the codes picked up. Write down the code numbers on a notepad using a pen, even if the scanner tells you what the code stands for -- you will need it later to describe to a mechanic.
Turn the auto ignition back towards the "Off" position and remove the car or truck keys from the Subaru. Connect for the Internet using a computer system and look up the codes you wrote down if your scanner doesn't describe them in detail. Write down the descriptions on your notepad.
Reconnect the scanner towards the Subaru and turn the car or truck for the "On" position again. Direct the scanner to wipe the existing codes inside the vehicle . Turn the auto "Off" and remove the scanner. Turn on the car or truck and its engine and drive it around to try and get the auto to turn on its check engine light again. Repeat the code reading process on the Subaru to confirm the same codes are being signaled by the engine sensors and the first time was not a blip. Take the car or truck to a mechanic with your confirmed information and direct the shop to make the necessary repairs.
2012年8月27日星期一
The way to Pick an OBD Scan Tool
To buy this gear, you might want to ascertain the year, make and model of your caricy or the registration documents.
Decide just how much you need to pay for this . The typical value for the OBD scanner tool as of 2010 ranges from $50 to $200. Pricing is based upon the number of functions this tool can supply for you. The more capabilities it has, the additional pricey it'll be.
Determine what capabilities of this tool will work for you. Do you just would like to read the codes? Do you'd like the ability to erase the codes when the reading is completed so it is going to turn off the light on your dash? Are you interested in a bilingual option for viewing diagnostic codes? Would you need an enhancement to hook this tool to a USB port on a computer or PDA device? Would you wish the ability to upload this tool to a computer to print diagnoses and update software?
Answering these questions will help you to make a decision which is the right tool for your tasks and personal car.
Decide just how much you need to pay for this . The typical value for the OBD scanner tool as of 2010 ranges from $50 to $200. Pricing is based upon the number of functions this tool can supply for you. The more capabilities it has, the additional pricey it'll be.
Determine what capabilities of this tool will work for you. Do you just would like to read the codes? Do you'd like the ability to erase the codes when the reading is completed so it is going to turn off the light on your dash? Are you interested in a bilingual option for viewing diagnostic codes? Would you need an enhancement to hook this tool to a USB port on a computer or PDA device? Would you wish the ability to upload this tool to a computer to print diagnoses and update software?
Answering these questions will help you to make a decision which is the right tool for your tasks and personal car.
Tips on how to Verify the Trouble Codes on a Ford Contour
Locate the DLC on the Ford Contour. The location may differ slightly according to the year, but most usually it is going to be beneath the driver's side dashboard close to the steering wheel . It truly is trapezoid shaped and you can refer towards the plug on the finish of the code reader since which has to plug into it.
Plug the code reader into the DLC and turn the ignition crucial to the "key-on/engine-off" position. This can be two clicks clockwise to ensure that all powered solutions are operable without the engine running.
Follow the onscreen menu on the code reader. The battery with the Contour will power up the code reader once plugged in. You won't have to turn on a power button. There could be a few possibilities on the onscreen menu determined by what kind you're using, but most will have an "enter" button and an up and down scrolling button(s).
Scroll the down arrow until the cursor on the screen of the code reader displays "read codes." Press enter. After the command is sent, (it may take a few seconds) it may possibly display the code(s) or tell you how many were found or pending. Follow the onscreen instructions of the code reader and select the enter button to read all the difficulty codes including pending codes.
Write the codes down on a piece of paper and refer to the chart to diagnose the problem. Not all difficulty codes read by the code reader or even a very expensive computerized will reveal the problem with the vehicle. There may possibly be circumstances where investigating the difficulty code may be necessary, or certain repairs might be needed in order to proceed.
Plug the code reader into the DLC and turn the ignition crucial to the "key-on/engine-off" position. This can be two clicks clockwise to ensure that all powered solutions are operable without the engine running.
Follow the onscreen menu on the code reader. The battery with the Contour will power up the code reader once plugged in. You won't have to turn on a power button. There could be a few possibilities on the onscreen menu determined by what kind you're using, but most will have an "enter" button and an up and down scrolling button(s).
Scroll the down arrow until the cursor on the screen of the code reader displays "read codes." Press enter. After the command is sent, (it may take a few seconds) it may possibly display the code(s) or tell you how many were found or pending. Follow the onscreen instructions of the code reader and select the enter button to read all the difficulty codes including pending codes.
Write the codes down on a piece of paper and refer to the chart to diagnose the problem. Not all difficulty codes read by the code reader or even a very expensive computerized will reveal the problem with the vehicle. There may possibly be circumstances where investigating the difficulty code may be necessary, or certain repairs might be needed in order to proceed.
2012年8月24日星期五
Hand Tools For Automotive Electrical Wiring
Digital Voltmeter
A excellent good quality digital voltmeter or DVM is vital for measuring voltage, present and Pulse Width Modulated signals . These simple signal types are prevalent sensor outputs, along with a DVM really should be capable of measuring these signals. A superb meter will also have the capacity to check diodes utilised in solenoid and relay flyback protection.
Wire Cutters
A sharp pair of wire cutters tends to make it much easier to cut wires and wire braid in an engine harness. You will discover two varieties of wire in an automobile, the smaller sized wires inside the engine harness plus the bigger cables used to route the battery for the starter and alternator. Every variety demands a different cutter. The automotive technician ought to pick out a smaller set to reduce the wires in an engine harness and also a heavy-duty set to cut substantial gauge battery cables.
Wire Strippers
Choose a superb set of wire strippers to add into your tool assortment. The wire strippers ought to possess the capacity to strip wires from 12-gauge wire to 22-gauge wire. Look for a set that will cut and remove the insulation all in one motion.
Specialty Tools
The automotive technician will acquire special tools over time. These "specialty" tools will make working on connectors and terminals simpler. Each connector manufacturer has developed its own style of pin, socket and connector. This needs a technician to acquire a range of specifically designed for one particular brand or style of connector. The collection terminal crimping tools and wire removal tools will grow as the technician encounters diverse brands of connector manufacturers.
A excellent good quality digital voltmeter or DVM is vital for measuring voltage, present and Pulse Width Modulated signals . These simple signal types are prevalent sensor outputs, along with a DVM really should be capable of measuring these signals. A superb meter will also have the capacity to check diodes utilised in solenoid and relay flyback protection.
Wire Cutters
A sharp pair of wire cutters tends to make it much easier to cut wires and wire braid in an engine harness. You will discover two varieties of wire in an automobile, the smaller sized wires inside the engine harness plus the bigger cables used to route the battery for the starter and alternator. Every variety demands a different cutter. The automotive technician ought to pick out a smaller set to reduce the wires in an engine harness and also a heavy-duty set to cut substantial gauge battery cables.
Wire Strippers
Choose a superb set of wire strippers to add into your tool assortment. The wire strippers ought to possess the capacity to strip wires from 12-gauge wire to 22-gauge wire. Look for a set that will cut and remove the insulation all in one motion.
Specialty Tools
The automotive technician will acquire special tools over time. These "specialty" tools will make working on connectors and terminals simpler. Each connector manufacturer has developed its own style of pin, socket and connector. This needs a technician to acquire a range of specifically designed for one particular brand or style of connector. The collection terminal crimping tools and wire removal tools will grow as the technician encounters diverse brands of connector manufacturers.
2012年8月20日星期一
BMW 325I Fault Code 128 Meaning
Your BMW indicates a code 128 from the engine manage module when the vehicle has failed to reach operating temperature within a set time from start up. This could imply the engine is too hot or also cold soon after a factory-set time frame.
Potential ProblemsYour BMW may not have enough coolant in the engine in the event the car becomes too hot following commence up. The car might also have a faulty thermostat or malfunctioning radiator fan.
TroubleshootingYou must examine the coolant levels as the 1st method of troubleshooting the fault code 128. Replace the thermostat in the event the coolant levels are appropriate. Look at the fan solenoid because the last part of your maintenance. You can reset the code 128 applying a diagnostic laptop. /a>
Automotive Troubleshooting for the Verify Engine Light
1. Find the vehicle's OBD-II port. This port is on the driver's side, below the dash . Ordinarily, the port is identified beneath the plastic dash console to the left of the steering wheel. The OBD II port matches the shape with the OBD II reader's 16-pin cable connection.
2. Connect the OBD-II reader, or scan tool, to the OBD-II port. Turn the vehicle's ignition important towards the "Start" position, but do not turn the vehicle on. Access the OBD-II reader's menu to retrieve the diagnostic information. Before retrieving information, many code readers require specifying in the menu the automotive brand connected to the scanner. Specific instructions vary according to device brand and model.
3. Allow the diagnostic reader to retrieve the diagnostic information from the vehicle's on-board computer. This may take several minutes. Codes display on the device when the process is complete.
4. Interpret the code. Some readers display what each code means, while others only display a diagnostic code. Retrieve code interpretation with the OBD-II reader's user's manual or through the OBD-II website.
5. Repair the problem the code indicates . Clear the code on the device. You may also clear the verify engine light by removing the battery cable and pressing the brake and horn to remove all residual stored electricity in the on-board computer. Using this method to clear the check engine light, however, will require the car's computer to relearn operating habits. If the problem causing the trigger is not cleared, the check engine light will return.
2. Connect the OBD-II reader, or scan tool, to the OBD-II port. Turn the vehicle's ignition important towards the "Start" position, but do not turn the vehicle on. Access the OBD-II reader's menu to retrieve the diagnostic information. Before retrieving information, many code readers require specifying in the menu the automotive brand connected to the scanner. Specific instructions vary according to device brand and model.
3. Allow the diagnostic reader to retrieve the diagnostic information from the vehicle's on-board computer. This may take several minutes. Codes display on the device when the process is complete.
4. Interpret the code. Some readers display what each code means, while others only display a diagnostic code. Retrieve code interpretation with the OBD-II reader's user's manual or through the OBD-II website.
5. Repair the problem the code indicates . Clear the code on the device. You may also clear the verify engine light by removing the battery cable and pressing the brake and horn to remove all residual stored electricity in the on-board computer. Using this method to clear the check engine light, however, will require the car's computer to relearn operating habits. If the problem causing the trigger is not cleared, the check engine light will return.
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