1999
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B
Cylinder 4 misfire plus EVAP System Monitor and Catalyst Monitor won't complete cycle
I have two 1999s 5.4s. One I've had for over 20 years and the second one for about 5 years. They both have the exact same problem: 304 code (cylinder 4 misfire). The other clue is that the trip cycles won't complete for the catalyst monitor and the evap system monitor. Expy #1 is the one...- BrentDJ
- Thread
- 1999 catalyst cylinder4 evap expedition 1stgeneration misfire tripcycle
- Replies: 10
- Forum: 1st Gen - 1997 - 2002
