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Hello everyone, This is my first post but I have done tons of forum searching and found similar posts but nothing with my same codes. I have noticed a rough idle but once I drive the car drives great and boosts great. Along with the 2 EVAP codes I have P0300, P0301, P0304 and P0308. I have changed the spark plugs and I did a full inspection of the coil packs. The coil packs looked perfect, no cracks or damage and it needed new plugs so I did Beru plugs. In that process I changed the torque arm also because the rubber was shot. That didn't solve the misfire and I didnt notice any wiring issues or connector issues. Onto the EVAP stuff. I have the two codes P2401 & P0448. Just put a new gas cap on and cleared the codes, they come right back. I also checked the oil fill cap and its seal looks great (no cracks in the oring). Does anyone have any idea or run into these same symptoms? I have an appointment at my local Indy shop in a few days but would like to go in prepared. They're going to start with a smoke test looking for a vacuum leak. Thanks in advance, Evan
Hi, I have a 2008 Porsche Cayenne with a a CEL for P2404. The car runs completely normal and this is the only check engine light code. The only information I found on this is: P2404 Evaporative Emission System Leak Detection Pump Sense Circuit Range/Performance Possible cause of fault - Insufficient vacuum (system has a leak or blockage) - Short circuit to B+ in signal line - Leakage diagnosis pump faulty (diaphragm or reed switch sticks, internal solenoid valve stays closed or is blocked) -DME control module faulty I was wondering if there was anyone with a similar issue or anyone with knowledge of a reported fix. If not, I'm a pretty good DIYer. Does anyone know how I should go about diagnosing this?
Hi There Folks, I recently had to remove my carbon canister from my 2000 Boxster S (3.2L) because I had to remove & replace a smashed AC line running from the front to the rear on the passenger side. This required R&R of the carbon canister to access the line. Upon starting the car back up I am hearing quite a bit of "popping" coming from the canister location. It sounds just like a vacuum pump trying to create a vacuum in a system. Is this normal? Will it go away? I haven't thrown any codes, and the car is running just fine. Obviously, any vacuum that would be in that system was totally lost when I disconnected all of the hoses in order to remove the canister. Is it trying to build back up a vacuum in the system? I don't believe I connected anything incorrectly. Any thoughts? Ideas? Thanks in advance everyone, I appreciate your help. Brian