First thing is to see if there are any codes stored in the computer.Thisis done with asmall jumper wire inserted between 2 terminals int he diagnostic connector located under the hood (see pic)
Turn key on and count the flashes of the check engine light,teh light will flash with short intervals then long ones, with 21/2 second intervals between codes (see pic)
Did you use Toyota coils when you replaced them before? Toy's are kinda strange about OEM parts lasting longer for some reason.
Saturday, August 30th, 2008 AT 7:40 AM