stizzylita

I am new here and hope someone has an idea why I am having issues with my car.


Here's the story incase any of it is relevant.
I put a racing cold air intake that sucked air from underneath my car. I didn't anticipate having a flash flood and my sister driving my car sucked water in my engine..ouch! No more engine so next I bought a used engine from a junkyard and had my car dismantler uncle do the job. This was obviously a cheap way out for me. Problem is he has no knowledge on diagnostic.


Now that I have my new engine in it sounds different and on cold starts it hesitates. It also came back with a check engine light for o2 sensor pre-cat/up-stream he apparently forgot to plug it back in. I have not fixed the O2 sensor yet due to being busy and I guess laziness at some existent.


My question is do you think it is the O2 sensor causing it to have trouble starting on cold starts or it could be something else he did wrong. Just looking for some idea's here.


Thank you

stizzylita

After plugging it back in and driving it the light came back on. Got it scanned by autozone and it is the same issue. I have not fixed the O2 sensor yet due to being busy and I guess laziness at some existent.