Mechanics

ENGINE LIGHT COMES ON

1999 Opel Astra • 13,500 miles

Got the fault code read and it comes up p0170 and I habe the erg valve changed and fuel filter changed coil pack 2 and still******** and down in powe
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Owenbrk
October 7, 2011.



Probable causes of an engine running rich are as follows: 1. Excessive fuel pressure can be cause by restricted fuel return line or defective fuel pressure regulator.
2. Defective Oxygen Sensors.
3. Leaking injectors and fuel pressure regulator.
4. Coolant temperature sensor out of calibration.
5. Restricted air intake system.

Rasmataz
Oct 7, 2011.