1989 king cab - does not have much power, stalls after stopping at a red light or in stop and go traffic?

Question

recently failed air care, so i replaced the O2 censor 2 months ago. when the air filter cap is on tight the readings are high, fails air care. when the air filter cap is left off or not tightened the readings are excellent. not sure if the alternator is not working properly? low battery? should check transmission fluid?

Answer 1

depends on how bad you want to or need to keep it but it might be time to move on.

you could have a shop look at it