I have a 2002 Toyota Echo. It has 205000 miles on it and I have noticed a popping sound when I am driving on the highway at 55-65mph. I was told that I need to run 90 or higher octane fuel in it because it sounds like it is a detonation problem. The only thing is, that I have also been told that you should be able to use regular fuel in it. HELP Please

SOURCE: 2001 Toyota Echo Fuel consumption

I hav a toyota echo 2001 with 108,000 millage.Recently when i just starting to drive there is some noise coming frpm rt front side ,but not offen only some times even this is not related to speeding can start with 0-5 mile/h. its seems to be broken something (like clicking noise). I checked with all repair stores, pepboys unfortunatly no body knowes what is wrong with this car.some of them saying it is axel or strut or bearing problem some of them do not know.please help me what to do ? if htis is save to drive?

SOURCE: Fuses in a 2002 toyota echo?

The one labeled "ACC" in the interior fuse box

SOURCE: Rattling noise when the car idles in drive/reverse position or...

predetonation,called ping can result from poor quality fuel,and high outside air temperature,it happens at lower speeds under load. a rattle could also be from the heat shield around the catalytic converter,it would buzz more if you wer idling and turned up the fan,the fan pulls quite a bit of current,and tha a/c will load the engine a bit.