Faulty PO300 & PO1305 Codes ? (1 Viewer)

[99BEACHCRUISER]

Hey Yall,

Check engine light came on for the first time (1999 100 series, i think im in the right place) throwing pO300 & p1305 codes...

but it seems to be running just fine.

i have new oem plugs & coils.

i may have accidentally put mid grade gas in it (what i use in my matrix), would that possibly cause it?

or is it possible its just so subtle theres not a noticable difference yet?

any input or help is appreciated.

thanks, Dave

 

[2001LC]

Check your coil wire block connection of #5. (BK1, 3rd cylinder from front)
Source of OEM plugs & coils. If not from authorized Toyota parts dealer. Are always suspect.

 

[JunkCrzr89]

Check your coil wire block connection of #5. (BK1, 3rd cylinder from front)
Source of OEM plugs & coils. If not from authorized Toyota parts dealer. Are always suspect.

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