1989 ply voyger, 4cyl,auto,tbi

it runs good 60 degress and above, below 40 degress it will start will not stay running, cked wiring, replaced shut off relay, cked, fuel pump, filter, code reader says ok, anyone got any tips? hello!

Engine coolant temp sensor, air temp sensor, or mass air flow sensor is where I would start. Need a scanner to see what the reading are that the computer is seeing.

if you turn the key on and then to off three times then leave it on watch engine light count the blinks then a pause and count them again
it will get some trouble codes. find out the code from a shop or you might find them from auto zone. after 1990 you need the scanner

where would the air temp sensor b located?? code reading says ok?