2004 ZTS Sedan, 2.3L PZEV, auto-trans
A couple weeks ago I did the Stealth CAI mod based on BlazingCopper's writeup here: http://www.ineedawebsite.com/Blazing...lth%20CAI.html
It has been great!
However just today I fired up the car and it was sputtering & puttering - and the Check Engine light started BLINKING. I had not left the driveway, so I pulled it into the garage, shut it off, and looked up the blinking. A misfire condition... great. :(
I checked when I last changed the spark plugs - over 40k miles ago. I had a box of Autolite XP103s on hand, so I checked the gaps at .050~.055-ish, disconnected my battery, and installed the new plugs.
I reconnected the battery, fired it up - no Check Engine light at all - not solid, not blinking. I let it idle for a few minutes, then drove it to my nearest Advance Autoparts. It still had the sputter during the drive, but no Check Engine light, there & back round trip about 8 miles.
The guy at Advance plugged into my diagnostic port - no static codes (I had cleared them evidently when I disconnected the battery) and the live data all checked OK with the car sitting, at idle and held at 3k rpm for a minute or so.
He asked me to pop the hood with it running, and he stated it sounded like something was sucking air where it shouldn't - a vacuum line, intake manifold, etc. I noticed the hissing too - it seems to be coming from the passenger side of the engine compartment, so I guess it's not the sound of air moving thru the new Stealth CAI setup.
I took these three videos when I returned home, idling in my driveway.
Inside the car watching the tach:
At the tailpipe - oh yah sputtering!
Hood up, engine compartment:
Any ideas on what I should do next?