I purchased a certified used 2003 RAV4 a year ago. And it is a super ride. September I did a premium fuel check to see if it was worth the extra cost compared to regular if my mileage would get better? October I changed back to regular. And about 2 weeks after changing back the check engine light came on. The reader showed P0300 & P0301. The list indicated P0300 misfire and P0301 misfire #1. We reset it because I never felt a misfire and the RAV ran with no problem or feeling of a misfire. 2 days later the light came on again and this time it indicated all 4 had a misfire and I never felt a misfire. I took it to the Toyota dealer where I purchased the car. After $135.00 dollars all they did was reset the light. 3 days later the light came on and again and took it back to the dealer because the car still has the remainder of the factory warrnenty. 3 weeks later I got my car back and they said they couldnít fix the problem.
They asked me what they should do? I said fix it what does the warranty mean. It means I have a boat anchor if they canít fix it. If we didnít like the size and 4wd I would tell them to jam their Toyotaís ,where the sun donít shine
They said they changed the computer, mass air sensor and the coil packs. I unplugged an plugged back in the o2 sensors. Looking for a bad connection. The light didnítí come on for a week then the code was miss fire #3 only. I was hoping that #3 miss fire would come on again so I could swap coil packs and move the problem. I reset the CPU and the light hasnít come on since BUT I do feel a misfire when cursing at about 55 mph. Some time it is really noticeable but the light wonít come on. Now when I want it to come on it wonít. I think Iím going to change the top o2 sensors it seems that it is the only common item. The car starts and run super at low speed or acceleration up to cursing speed. It never misses a beat. I also run it to red line and left the automatic do its thing and it never missed. Only at cruse and randomly