1997 Toyota Previa "using wrong gas oil mixture" Questions

gas test ok but after 1000km a light on board show failure engine . service change O2 sensors after 100km the light appear again service told me to change catalitic.what is happened? IT IS NORMAL? Hi,

...partner saw that was running fine then next day won't start quite possibly wrong gas mixture was used . they do not like no or too little oil in the gas Most likely the coil died. Check for

...wrong oil weight (you should be using 5W-20 or 5W-30), excessively rich fuel mixture, incorrect ignition timing, defective catalytic converter, defective oxygen sensor (which can cause the too rich ...

...gas right, fuel not told. the CEL means CATS are now melting. $$$$$$$$ injectors stuck open super high fuel pressure. our ACCent is 1.5L so you are not IN USA< so why not tell country.? cars are ...

...gas tank but the 'light' still keep lighting on. Please help me to give a better advice because I dont want to end up with spending in unapproriate parts. Thank you in advance. There are many causes ...

...using a little oil. I have to put about 1 quart after 1500 miles so in between oil changes. It has a hesitation when sitting still has lost gas mileage. Lean codes are caused by the engine running ...

wrong .. a clogged catalytic converter will eventually be discovered but can cause reduced milage before that .. if something on the engine is making noise it can cause the "spark knock" detector to *

Wrong??????? Need some other direction if anyone can help?? It's the automatic choke! The choke is "closed" or barely open... When cold, the engine needs a RICH mixture (more gasoline, less air). When

...gas and the computer couldn't adapt to it fast enough and it turned the light on ( theirs nothing wrong with your car) try to run your car on the same fuel to avoid this problem and this is true with ...

...wrong with the car as it runs perfectly just like it does in warmer condition year round.(No problems up hills, acceleration or any driving modes). I have replaced the fuel cap, rotor cap on the ...