Hey there! This is a long story so I'll try to make it short, but probably leave out important details so please bare with me. (bear? bare? lol)
Friend's car. 2001. Just had used motor with 50k miles put in. Sounds and runs great.
Problem 1: Took it to smog station. Everything passed EXCEPT the check engine light got caught on the test.
Problem 2: Shop that did the work was across the parking lot so we took it over there to see if they'd help find out what was wrong. Wasn't the motor or emissions, cuz that part passed. When they got the machine to do a diagnostic, they discovered no power to the port. Mechanic checked fuses, and anything else that would apply. Nothing there...and the lighter worked.
Question: Would electrical problems with radio cause check engine light? Radio might be wired wrong.
Question: Without buying a book and figuring out what could be wrong, how do restore power to the diagnostic port? It wasn't a fuse.This could take years without a pro with past experience with this particular issue.
Question: What is the 10 amp fuse for the Engine' for? We did discover a 7.5 in that slot....but this was later after giving up on trying the smog/mechanic/retesting/DMV/yadayadayada.
I don't have all the year/make/model info except what I posted here. I do know the car is a 2001 but they used a 2000 motor. The check engine light did come on indescriminantly prior to the motor swap, never staying on for long or turn the car off and on and it would stay gone for days.
Let me add, the smog station said to drive it for a few days so it resets itself. Problem with that is, the car's tags are expired...long overdue so DMV won't give temp permit for window. not an issue to resolve...just want some info on bigger problem.
Thanks to everyone for even considering the dilemma! Any questions or advice is great appreciated!