2004 voyager 3.3L
 

Hi,i am pulling my hair out,not that i have much left over this.[X(]My 3.3L voyager has covered 209000 miles,over the last week has developed a misfire & rough idle more so when cold.diagnostic reads P0301 engine misfire No1..I have renewed spark plugs & ht leads,then coil pack & No 1 injector but still have the problem.I have also checked cylinder compression which is fairly consistent on all cylinders & 125psi..On start from cold the engine only runs on 5 cylinders with No 1 being at fault but when the engine is hot it starts to fire on that cylinder as well, although not as good as remaining cylinders.Would appreciate any help/ideas on this.
Regards Mike

RE: 2004 voyager 3.3L
 

are u even getting power to the injector what about ground pluse when it is running?

RE: 2004 voyager 3.3L
 

hi,there is good power & pulse at the injector.

RE: 2004 voyager 3.3L
 

with all that U have done or say have been done and checked out good U only have one other deal left and that would be internal engine valves, and such.

RE: 2004 voyager 3.3L
 

Hi,if there were mechanical faults(valves etc) present would these show up in the engine diagnostic and produce the fault code ?.Correct me if i am wrong but i thought the diagnostic only checked engine managment electrical faults ?regards Mike

RE: 2004 voyager 3.3L
 

the diog light is for electrical things and misfires a misfire is for federal gov stuff if a cyl is missing it is letting out the gas that they dont want so it turns on the light.