Volvo Gas Mileage again

  • Thread starter Thread starter Geoffrey Collins
  • Start date Start date
G

Geoffrey Collins

Please advise me here:
I have a 1989 740 GL 8 valve no turbo.

I have already changed the oxygen sensor and the fuel pressure regulator
and the air flow sensor but

still poor gas mileage-- 12 mile to the gallon.

Any more ideas will be welcome . Thanks

Geoff
 
Its is an auto, also how about the crankcase ventilation or the oil trap? It
it also leaking oil?

Griz
 
Have you checked for leaks in the fuel lines or tank and for dripping
injectors? Unless the engine is running like total crap it seems fuel must
be going somewhere.
 
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