Question about Refrigerators
Wow you must have some knowledge about refrigeration systems.
as with all freon based systems, they do work on temp absorption. you must also know that a so called "cooling" device doesnt actually cool, but it takes away heat.
this is how they produce a cooling effect and remove heat from the items we want cooled.
like a refrigerator or an air conditioner.
they all use compressors and freon to absorb the heat from the place we dont want it.
if you need more info just reply here.
Posted on Feb 03, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
1 Ensure that fuel filler cap is fully closed (minimum three clicks).
2 Fuel level > 30% and < 85%.
3 Using WDS scanner perform ECM DTC Clear (even if no DTCs are flagged).
4 Drive vehicle for a minimum of 2 minutes, and until engine is at normal operating temperature.
5 Using WDS, ensure that the EVAP Canister Purge Valve is operating by observing "PURGE VAPOR MANAGEMENT VALVE - DUTY CYCLE". If the valve is not
active, ECM adaptions have not been learned. Conduct a "green ECM" Drive Cycle as described in Technical Service Bulletin.
6 Drive vehicle to the road where the EVAP System Drive Cycle will be conducted. Stop vehicle and switch OFF the ignition. Leave ignition OFF for 30 seconds,
then restart the engine.
7 Accelerate briskly to 80 km/h (50 mph) ensuring that the engine speed reaches a minimum of 3500 rpm for a minimum of 5 seconds.
8 (0.040 inch EVAP Test) View WDS "PURGE VAPOR MANAGEMENT VALVE - DUTY CYCLE", "CANISTER CLOSE VALVE - VAPOR RECOVERY SYSTEM", and
FUEL TANK PRESSURE - VAPOR RECOVERY SYSTEM". Avoiding high engine loads, drive the vehicle steadily between 65 km/h (40 mph) and 100 km/h (60
mph). Avoid driving conditions that will produce excessive fuel movement. WDS should give an indication that the test is active (it may take up to 30 minutes
before the test will initialize). When the test has initialized (EVAP Canister Close Valve CLOSED), it will take approximately 90 seconds for the test to complete.
9 (0.020 inch EVAP Test) Continue driving vehicle as explained in Step 8 for an additional 10 minutes.
10 Gently coast the vehicle to a stop. Allow the engine to idle for 2 minutes and view WDS "PURGE VAPOR MANAGEMENT VALVE - DUTY CYCLE", "CANISTER
CLOSE VALVE - VAPOR RECOVERY SYSTEM", and FUEL TANK PRESSURE - VAPOR RECOVERY SYSTEM". WDS should give an indication that the test is
active. When the test has initialized (EVAP Canister Close Valve CLOSED), it will take approximately 90 seconds for the test to complete.
11 If the 0.020 inch EVAP Test is not activated, the purge system vapor concentration may be too great. To reduce the vapor concentration proceed as follows:
12 Drive the vehicle for an additional 30 minutes avoiding driving conditions that will produce excessive fuel movement. Repeat Step 10. If the 0.020 inch EVAP
Test is still not activated, repeat the Drive Cycle from Step 6.
13 Using WDS, check for and clear flagged DTCs
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