buddhacuda

can the check engine light come on when i dont use 93 octane gas...because for the past week i use 89 and the light came on. Or could it be something else?

Dan04COBRA

It's something else, switch back to premium fuel and see what happens, if nothing happens you need to start diagnosing <IMG src=smileys/smiley2.gif border="0">

98 CobraSVT

o2 sensors could be bad my brother

BLKSTANG9879

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Do you have a chip or the computer reprogramed. Or do you have a timing adjuster. If you got wither of them, then thats your problem. Cause with the advanced timing, you need that 93 octane gas, or your C/E light will come on. If you don't you might wanna start checking out the pollution control crap on your car.</P>

N2OJunkie

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Buy an OBD II scanner and get a Diag code...thats the most practical step to do .</P>

ST0NER

I bet you got some s**tty gas. keep an eye if your car becomes a bitch to start. Whati mean is it starts the nshuts right back off then you got some s**tty. gas $50 to buy a new fuel intake.

vfast

remove the gas cap and put it back on tightly

N2OJunkie

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Good point,it was probably loosely placed and leaking the vapors out, one thing that can trigger the CEL.</P>