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Forum namePerformance/Engine
Topic subjectafter running at about 3,500 to 4,000 rpms
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i5&topic_id=82847
82847, after running at about 3,500 to 4,000 rpms
Posted by talonguy2005, Nov-20-04 08:33 AM
after i have been on the freeway for like 10 mins or so, at about 3,500 to 4,000 rpms in 5th gear, the car will sound like it might be misfiring, or sputtering once the rpms come down to like 2,500ish and it will just sputter, unless i downshift and get the rpms back up again. any ideas what can cause this, my CEL is on, but im pretty sure its just for a very small EGR leak. my car idels almost perfectly too.. any idea?
82848, RE: after running at about 3,500 to 4,000 rpms
Posted by 96eclipse2nr, Nov-20-04 10:17 AM
check/replace plug, wires, coil in that order untill you solve your problem
82857, RE: after running at about 3,500 to 4,000 rpms
Posted by talonguy2005, Nov-20-04 06:18 PM
but i have already done that multiple times....

currently have:
MSD coil
NGK Plugs
MSD 8.5 mm wires
82874, RE: after running at about 3,500 to 4,000 rpms
Posted by nosdeclipse, Nov-21-04 07:12 AM
I'm having the same problem once in awhile and it is because my O2 sensor is comletely shot. Give that a check.
82876, RE: after running at about 3,500 to 4,000 rpms
Posted by talonguy2005, Nov-21-04 08:54 AM
hey, it was drenched in burning oil, before when my valve stem seals were bad... im gonna go replace mine, since i have a lifetime warranty :) ill see if that could fix it.