I own a Ford Ranger 2.3L 4cyl with 87,000 miles. At 61,000 miles the engine began misfiring and backfiring at first startup of day, and also missing under load. The dealership replaced the coilpack and plugs which seemed to cure the problem. At 86,000 the truck again began missing ocassionally under load or mediu, m acceleration. It seems to idle fine and no symptoms are evident during rapid acceleration at higher RPMS. I have replaced the air filter and fuel filter which had no effect. Check Engine Light is NOT on. Any ideas would be appreciated!
Sunday, May 14th, 2006 AT 1:54 PM