Need help.

[Crypto kade]

Not sure if I’m in the right thread. But I can’t seem to post anywhere else and I have done my ten posts.

Relevant info.
2016 Chevy Sonic 39000 miles. 1.8 engine.
Original problem stalling rough idle and hard downshifting while slowing down. CEL for upstream and downstream running lean. O2 sensors both replaced.
20 miles later more stalling. More rough idles. No CEL though. Took to dealer said purge valve solenoid. Replaced that.
No more stalling so far.
Still a little rough on the idle and occasional rough downshifts. No codes pending no dummy lights.
Is there anything more I can do feel like I’m looking for a black cat in the dark.
My first newer car. Has been a nightmare. So far as these have not been my only problems just the one I’m stuck on.
Any help is appreciated.


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[Tormach]

not sure if it fix d for that year, but check the rubber air intake hose for any taring or cracking.

Do you have a scanner that shows pending codes?

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[Crypto kade]

not sure if it fix d for that year, but check the rubber air intake hose for any taring or cracking.

Do you have a scanner that shows pending codes?

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No pending scores no CEL. Last codes I had were 02 sensors running lean. Haven’t had a code since then but still a little rough. Will check the intake hose when I get to work.


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[lmiller]

A little late for my response, however, just incase anyone reads this with the same issue.... I was getting the same code over and over and we thought it was the air hose being cracked, every time we got the car maintenance since we had them check the filter as well... We replaced that hose so many times. However, right before paying the car off, I had the dealership check it because the engine light kept coming on, and we were getting that code. Low and behold, it was the c converter, that was 3 years ago!. They replaced and never had the issue again.... but now I am having different issues.