986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - P0441 Fuel Tank Ventilation System

CJ_Boxster · 01-21-2009, 05:27 PM

Hey Guys, I need some help diagnosing an issue im having with my 97 Boxster.

One day, Im driving 65MPH on the freeway when I hear what sounds like a handgun being fired from inside my engine compartment... The engine didnt hickup or anything but once I was off the freeway the Idle was alittle unstable, moving from 900 - 1100rpm's and I got a CEL with 1 code (P0441 Fuel Tank Ventilation System - Above Limit )

She sometimes stalls during idle and will take about 7 seconds of cranking to start back up & sometimes comes close but doesnt stall.
Also, when I turn off the engine after about 10min drive I'll hear a sound similar to a low toned 1 second honk coming from either the passenger front Fender or engine bay... Hard to tell, really.

Any ideas what would cause all these symptoms?

01-21-2009, 05:27 PM	#1
CJ_Boxster Registered User Join Date: Jul 2006 Location: Where the Sewer Meets the Sea, CA. USA Posts: 2,695	P0441 Fuel Tank Ventilation System - Above Limit Hey Guys, I need some help diagnosing an issue im having with my 97 Boxster. One day, Im driving 65MPH on the freeway when I hear what sounds like a handgun being fired from inside my engine compartment... The engine didnt hickup or anything but once I was off the freeway the Idle was alittle unstable, moving from 900 - 1100rpm's and I got a CEL with 1 code (P0441 Fuel Tank Ventilation System - Above Limit ) She sometimes stalls during idle and will take about 7 seconds of cranking to start back up & sometimes comes close but doesnt stall. Also, when I turn off the engine after about 10min drive I'll hear a sound similar to a low toned 1 second honk coming from either the passenger front Fender or engine bay... Hard to tell, really. Any ideas what would cause all these symptoms? __________________ --Proud Boxster Owner/Tech, Carlos J Cazares FastForward Performance http://i10.photobucket.com/albums/a1...er/newsig1.jpg Last edited by CJ_Boxster; 01-21-2009 at 05:52 PM.