A mileage of carsoft 6.5 about 180,000 km, geared up with M54 motor of BMW 520i sedan in 2006 . People report: automobile coolant temperature warning lamp lights up often .
Check the investigation: 1st, visual inspection upkeep staff members observed no lack of coolant , along with the motor idling coolant temperature is typical . Examination approaches by opening and shutting air conditioning , cooling enthusiast is operating. Read through with fault diagnostic data stream head launch x431 when idling for the outlet coolant temperature of a hundred and five, the temperature with the outlet of your radiator is 63, standard . In the event the cylinder head outlet coolant temperature reaches one hundred ten, minimal velocity cooling lover begin once the coolant temperature all the way down to 103 supporter stops . These phenomena reveal that less than no-load condition, the motor 's cooling process is doing work effectively . To reproduce the fault requirements to become a highway examination .
Road examination discovered that in the event the auto is in 40 ~ sixty km / h velocity halt and go, when the cylinder head within the outlet coolant temperature reaches a hundred and fifteen, the coolant temperature with the outlet from the radiator right down to fifty one. This indicates that once the coolant temperature rises, gm tech 2 the engine coolant movement with the radiator is minimized , which the trouble occurs . Absolutely sure plenty of, soon will head the outlet coolant temperature reaches 117 , the coolant temperature warning lights. The peculiar issue is once the alarm lights , radiator coolant temperature immediately rises for the export of 76.five, description coolant circulation is elevated, a corresponding cylinder head outlet coolant temperature slide, the alarm goes off.
By observing the above mentioned method may be noticed , for the reason that the auto warning lights are inadequate coolant flow . The cause of the coolant stream is cummins insite inadequate coolant appeared gasification , commonly recognized as "boil ." And once the boil phenomenon , coolant movement can improve fast , indicating which the engine manage device for circulating movement cooling process intervened .
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