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89 F-150 Very Rough IdleTiinker 02-07-2004, 01:09 PM I have an 89 F-150, 4.9L. It Idles very rough,First start always stalls. Second start stays running. I have changed : Fuel Pump, Fuel filter, TPS, Map Sensor, Plugs, Wires, Air filter, PVC. Cleaned IAC and fuel injection. I have checked for vacum leaks and found none. Any suggestions? ervinj 02-14-2004, 04:35 PM EGR valve comes to mind. let us know. ervinj Automotive Network, Inc., Copyright ©2012
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