JACKLINE
Electronic Fuel Injection Final Study Guide With Questions And 100% SURE
ANSWERS
Terms in this set (19)
- PCM uses inputs to determine the idle speed
ISC (idle speed control)
- a dirty passage can cause low idle speeds
- measures the volume of air by weight entering the engine
- uses a heated wire that is cooled by the incoming air to measure the volume
MAF (mass air flow) sensor
- hot film GM meters can be tested by tapping on them
- meters can be tested by unplugging and driving to see if issues go away
- measures O2 in the exhaust stream
- pre OBD-II use one in the exhaust stream
- post OBD-II use one before the catalyst converter and one after
O2 (oxygen) sensor
- post OBD-II sensors have a heating element to speed the sensor to operation temperature,
they use 4 wires
PFI (port fuel injection) - operation is checked
uses one injector with acylinder
for each volt meter or lab scope
1/4
Electronic Fuel Injection Final Study Guide With Questions And 100% SURE
ANSWERS
Terms in this set (19)
- PCM uses inputs to determine the idle speed
ISC (idle speed control)
- a dirty passage can cause low idle speeds
- measures the volume of air by weight entering the engine
- uses a heated wire that is cooled by the incoming air to measure the volume
MAF (mass air flow) sensor
- hot film GM meters can be tested by tapping on them
- meters can be tested by unplugging and driving to see if issues go away
- measures O2 in the exhaust stream
- pre OBD-II use one in the exhaust stream
- post OBD-II use one before the catalyst converter and one after
O2 (oxygen) sensor
- post OBD-II sensors have a heating element to speed the sensor to operation temperature,
they use 4 wires
PFI (port fuel injection) - operation is checked
uses one injector with acylinder
for each volt meter or lab scope
1/4
