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about a hundred thirty,000 km of Shanghai Volkswagen Santana . Cold challenging to start off the vehicle symptom appears.
Troubleshooting : The fault detector detects no fault code storage. Check out the ignition process , ingestion pipe , engine timing and associated elm327 obd2
grounding strains, no exceptions. Cleansing the throttle as well as consumption pipe of coke and also the matching examination , the fault remains. According upkeep experience, in case the earlier mentioned assessments ended up regular , the cold really hard within the begin is probably going to get too lean mixture focus induced . So when you get started to spray carburetor cleaner within the throttle , the motor can efficiently start out the device, which is tough to clarify the reasons for setting up a cold vehicle really is simply too lean mixture focus.
After beginning the engine in the motor , measure gasoline stress, ordinary ; motor flameout , tension scenarios to check the gas line , but will also standard . Immediately after reading through the information stream engine is chilly engine , locate the coolant temperature is 95, when the particular coolant temperature is barely about twenty, infer coolant temperature sensor is defective.The car coolant temperature sensor has 4 terminals , which includes terminals one and three provide coolant temperature sign into the motor handle device , terminals two and 4 give coolant temperature sign to the instrument . Disconnect the ignition switch, disconnected coolant autel md802
temperature sensor wire connectors, calculated that has a multimeter resistance coolant temperature sensor terminal one and terminal three among two hundred or so , which indicates coolant temperature sensor is broken.
Troubleshooting: Changing the coolant temperature
Failure Analysis: Failure by car coolant temperature sensor resistance drift caused . When chilly beginning , coolant temperature sensor resistance about two hundred, the engine manage unit mistaken coolant temperature 95, manage gasoline injection pulse width is lowered , in order that the concentration on the combination far too lean , ensuing in problem starting the motor . The vehicle launch creader crp129
reason behind the malfunction will not be sophisticated, for skilled upkeep staff may possibly commence straight from the coolant temperature sensor diagnosis , but thanks to no fault code strategies, the greater probable explanation for the failure , at times there will be detours.