My friend's mom has a 2010 LS with a 2.4L that has reduced power. She doesn't notice it (she's 89 yrs old), but he drove it the other day and said it's sluggish. No engine lights or warnings. It does seem to run a little rough, but thought it was just the 4 cylinder.
Could it just need plugs, or could it be a clogged catalytic converter?
Could it just need plugs, or could it be a clogged catalytic converter?