yes other one didn't work either. main problem is probably the engine heat. my engine heat is not on the middle while i was doing it.
also, in one place I see it says, all the error code must be cleared in order to do this. is that true? as i already had a check engine on before all this... that also might be the problem.
BTW, is it safe to drive in this condition? at ideal/prk tachometer reads just under 3 and periodically jumps to 4