I purchased a 1997 rav4 auto awd (150k) since I've had it it's been avg. 18-19mpg 60% freeway,I changed the vsv,left front wheel bearing,cleaned the throttle body,and idle control(took them of the motor)bought a k&n,replaced the autolites with NGK laser cut plugs,cap and rotor,fuel filter and a had my transmission rebuilt($1500 not bad included R and R) cause it leaked out of the bell housing(Rav has 150 k on it)it still seems to get the same mpg when I bought it(2 months ago) the guy said he change the distributer O ring, is it possible the timing is off(it runs great just gets poor millage,do I need to reset the computer after the plugs,cap and rotor.I reset it after the vsv(which I moved to the firewall for the next time!
) then did plugs.After the plug change it starts up right when I turn the key,before it would turn over 2 or 3 times but my wife says it still seems the same mpg wise,(after 2 days)90 miles . To reset the puter I just unplug the battery for 1/2 hr. right?
Any help would be appreciated Thanks