My car suddenly started running very sluggish, and iddling very rough. The engine temperature indicator is in the normal operating range but my exhaust manifold was glowing red after about a 15 minute drive. The exhaust at the tail pipe smells rich and does not exit smoothly. It sounds like a cylinder is missfiring, but I only hear this at the rear of the vehicle. I replaced the O2 sensors about 5,000 miles ago. Is this an ignition problem or is the exhaust clogged?
Jan 13, 2008 at 9:46 AM