obd 1

[davistimes3]

my obd1 plug in has no power for me to see if i have a code on it..i have a 1991 tracker 8 valve..anyone have schematics for the wiring for this

[fixkick]

no power, the 91 has DLC next to the battery there is no power there, like in 1996+ cars.
its just a 2 pin jumper seen here, infact the page is a 91 geo.
as you saying the DLC is missing,?? it has black cap on it , if still liike new.
if its missing the harness would be hacked all to hell here.
see the red body here, its a 1991 geo tracker, verbatim.

http://www.fixkick.com/CEL/DLC/DiagJump.html

[davistimes3]

nope its still there..im having a bad loss of power issue for no reason i shut truck off and start again and its fine

[fixkick]

intermittent problems, are no fun.