Check engine light on, runs rough, pulled code for misfire on #1, replaced coil pack, plugs , wires. Reset, check engine lite off, no code, ran good. For while, check engine light on again. 2007,2.4, 4 cylinder caravan. Only major work was head gasket, 100,000 actual miles on van.

 

did the misfire return on the same cylinder? if yes, do a compression check.