Car has the 2.5L V6. All o2 sensors were recently replaced (within a few months, for unrelated issue). Car began studdering/shaking/sometimes stalling when slowing down or stopped and the rpms got got lower yesterday. Previously replaced the iac valve to fix the same issue a few years ago with success. Replaced it yesterday and the problem improved but still had a slight shake, problem reappeared worse today and is hard to keep car running when slowing down or stopped. ECU gave codes P0171 and P0174 when scanned yesterday.
Jan 5, 2010 at 3:19 PM
