Yeah I'm gonna see if a shop will test my cats. And I'm pretty much gonna wait for a CEL I don't wana start buying parts and throwing them in if that's not the problem Side note: they'll be up that way by the end of summer which means ill be in my own place by then. Maybe August
My number 8 cop was bad and never threw a light, and my edge didn't read it, but the shop did. sent from my igloo
Yeah, it wouldn't hurt. You can buy all 8 for about $80 on Amazon. But they're an item that works or doesn't, they don't slowly go bad or anything.
Vibration is probably your plugs. Sounds like the typical shake. It's mostly when it goes to downshift about 40-45 mph right? One way to check that is turn off the overdrive. When I had a bad plug it was causing an intermittent misfire that you could feel in OD but not when it was off. A full free diagnostic at a local shop told me that right before they wished me luck changing the plugs since they won't mess with them
Yeah It's a slight vibration, constant. Only on heavy acceleration like you said when the truck downshifts when you step on it lol. Doesn't feel like a misfire or anything. Just started a few days ago