cel codes how to fix

[89shofun]

ok i have 89 mtx heres my codes
koeo
11 sys ok
54 iat signal high
16 (O) Electronic ignition - IDM circuit fault - Ignition Systems
66 Vane Air Flow (VAF) or Mass Air Flow (MAF) signal low - VAF MAF
Transmission Oil Temperature (TOT) signal low (possibly grounded) - >Transmission
79 A/C is on or pin 10 is shorted to power

i had 21 the first go through before it repeated but not the repeat

21 Engine Coolant Temperature (ECT) sensor out of range - ECT

koer i got 13 and 21

13 Idle Speed Control motor or Air Bypass not controlling idle properly (generally idle too high)


how do i fix these i need hlp plz thank you

 

[Ishodu]

You should maybe clear them codes, and run them again. Make sure you keep the climate control OFF and warm the car up to operating temps. You could also try and clean the filaments on the MAF with electronic contact cleaner.

 

[89shofun]

true i didnt do it at temp figures id not notice that part. oh i also was under the assumption my converters might be bad because i could here rattling when rmp changed, well i just now looked at them and there was a clamp for the exhaust that was loose and ratling i held it in place noise is gone it broke apart just with a socket pure rust lol. The guy i purchased car from said they were new so im happy i will clear codes then go one by one thanks bud