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Im lost. Vehicle is a 94 ford explorer limited edition with the 4.0 auto.

KoEo self test with good video, I'm not good with pattern stuff, I admit, I need help from someone.

link looks mispelled, but its right. I don't know wtf youtubes doin there.



 

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Here's my best guess in order I read them... after watching it twenty times. I haven't had to do a lot of OBDI diag, OBDII is much much nicer lol.

565
(O)​
Canister Purge 1 solenoid/circuit failure - Solenoids
181
(M)​
Fuel system was lean at part throttle Single, Right or Rear HO2S - Fuel control
186
(M)​
Injector pulse width longer than expected or Mass Air Flow (MAF) lower than expected - Fuel control
189
(M)​
Fuel system was lean at part throttle - Left or Front HO2S - Fuel control
543
(O)​
Fuel pump monitor circuit shows no power - Power / Fuel Pump Circuits
 
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check power on the fuel pump circuit, maybe there's an open wire somewhere intermittently causing issues. If the truck isn't getting full pressure from the fuel system (code 543) it would obviously be running lean which would be picked up by the O2 sensor (code 189).
 
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