1989 Volvo 780 Repair Question
Topics covered: Sensor, Coolant, Fuel pressure.
Mileage: 1 miles.
Mileage: 1 miles.
Asked on November 20, 2011
Black smoke comes out of the exhaust pipe car does not run ok
My car does not accelarate properly, and when i press the gas black smoke comes out of the exhust pipe.
Asked by nabilalmasriAnswer
Replied on November 20, 2011
Its running too rich could be caused by one of the following:
1.Excessive fuel pressure can be cause by restricted fuel return line
2.Defective Oxygen Sensors.
3.Leaking injectors and fuel pressure regulator.
4.Coolant temperature sensor out of calibration.
5.Restricted air intake system.
Replied on November 21, 2011
Hell this is nabil. can you please tell me how the coolant temp sensor is calibrated on this volvo since it maight be the issue this problem accured after i replaced the water pump.
Replied on November 21, 2011
Check the sensor's resistances Hot and Cold if its not within specs-replace it