I go to my local Autozone store that lets me borrow their code reader to hook up to my Toyotas and check the codes.

180,000KM is 112,000 miles. Have you replaced the O2 sensor yet? Usually goes bad around 80-100K miles and is seen as a drop in fuel mileage by 10%. Computer in the 4runner doesn't show an engine light until much later. There is a article here for step by step replacement.

Good luck, Hugh


94' 4Runner SR5 3.0L, 4X4, 5-speed, 200K

01' Sienna XLE, 105K, auto everything...

91' Ford F-250, 7.3 liter IDI diesel, 5-speed, 170K