Toyota RAV4 over fueling
Good day. My 1999 Rav4 5dr 4x4 was in front accident. I am in South Africa, so this model is still same shape since 1994. It has 2.0i engine - the same as in Camry's in SA. This engine does not have oxygen / lambda censor.
Car is repaired, but fuel consumption is very high - 14 l/100km! CO is adjusted to lowest - down from 10% to 2%, but should be 0.5%. Tried to check resistances on CO-pot, water temp probe, air temp probe, etc, but appears normal. Throttle valverresistance does chance when turning it. Fuel return pipe to tank seems to be open. According to mechanics, fuel pressure is OK and timing cam position is correct. Another mechanic said the injectors stay open for the full duration during each cycle, implying they do open and close, but are staying open too long? or doesn't vary with engine revs / throttle valve position? Don't know if this is how it is meant to work. I do not have the values that the resistances of the various probes should be to compare to mine.
Any other suggestions? How does vacuum valve work - any influence on fuel?
Enjoy the day.