[Cruehead]

In my 94GT, I'm getting a Check Engine light at full throttle. It stays for about 20 seconds or so, then turns off. Anyone have any idea what it could be? I can't hook up a scanner cuz it only happens at full throttle, then goes away.

[Julian Moore]

Mine used to be an emisssions light. It came under full throttle but mostly on humid days. Drove me nuts. I went and had a chip burned and he askedme if I ever got a check engine light, I said excatly what you said..reply=emissions. He shut it off..no more.

[Cruehead]

Originally Posted by Julian Moore

Mine used to be an emisssions light. It came under full throttle but mostly on humid days. Drove me nuts. I went and had a chip burned and he askedme if I ever got a check engine light, I said excatly what you said..reply=emissions. He shut it off..no more.

I never noticed it...but yes, it is more common to happen during very humid days. Thanks man!

[302GT]

The same thing happened to my 94gt. look for craked EGR vacuum lines.that fixed the problem on mine.