Originally Posted by
svtmerc
Went for a nice long drive yesterday evening, the dreaded check engine light returned.... still claims to be rich in 1 bank and lean on the other. Also, sprayed ether around the engine bay Saturday prior to swapping the TB and MAF out and had no noticeable changes in operation when doing that, so I can only assume there are no vacuum leaks.
If there is no more rough running, then you are closer to a solution to the issue. Sometimes, multiple things cause issues that distract. Finding them involves solving one thing at a time. Make sure the rough running is solved then tackle the remaining one step at a time. Finally, do not discard the fact that your issue may still be related to things you put back into the car (that amplified the initial upgrades resulting in the mess you have). If there is a bad component you still have then find it before you move on to another possibility. Good luck!
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