Common Trouble Code Solutions
Code 33 ~ (1985-1990) Inspect intake system for leaks, Inspect for vacuum leaks, Check MAF connector and wiring, Check MAF for open using digital Ohm meter. Possible ECM failure. (1984) Check vacuum hoses. Check wiring to sensor. Change sensor. Check connections at ECM. If you have a 1986 model be sure to check out this Bugged PROM Article for possible false codes.
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