check engine light problem and question.

[deanalbright]

so i found out how to check my engine light codes today and heres what i got
12 21 22 34
any reconmendations on the parts i should or where i could get themmy 1989 supra turbo bogs out and dies after about five seconds of idleing.

please help.

 

[jetjock]

Since those codes may be old or were set for reasons not associated with actual sensor failure the first step is to clear them and see what comes back...