Recently did a timing belt on this car. Ran Perfect. I was on the highway and then the engine light started blinking and throwing codes P0300,P0302,P0304,P0306. I changed the plugs, wires, tested coils seemed okay. changed the front 3 injectors. I have a new fuel filter for it still havent put it on. Tested crank sensor and it came out good. I dont know what else there is. Maybe a clogged Cat? but wouldnt a clogged cat cause misfiring on all cylinders? Please help thanks
Avalon Misfiring! Codes P0300,P0302,P0304,P0306! on 1997 Toyota Avalon
by 97avalonxltrouble in Westlake, OH on March 03, 2013
I am having a problem with my 2005 Avalon. About 2 weeks ago the check engine light came on and the engine started to misfire. I put some fuel treatment in the tank, I thought maybe it was a proble...