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hey my son car is pulling two codes
1. po351
2. p1443
he is FL and I am in SC

Vehicle: 1998 ford mustang gt 4.6

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P1443 Incorrect evaporative system purge control valve

P0351 Ignition coil primary / secondary circuit malfunction

Was a tune up on this vehicle perfromed?  P0351 in a majority of time occurr when a tuneup is perfromed and somehow a igntion coil was not connected this show up mostly on COP (Coil on plug) P1443 this is for the purge flow disconnected hose to the purge flow or a crack at the hose for purge flow can cause this.

 Here is a typical P0351, what happened here was a tune was done after the vehicle was started a rough idle occured, the only code was P0351 , there was no misfire code only a P0351, The reason a cylinder misfire did not show on a scan tool is the misfire did not exceed its upper limit. only a P0351, rechecking the igntion coil revealed a heavy amount of dielectric grease which is recommened that you use when installing new or reusing  sparkplug wire or reinstalling the COP. but to much will set a P0351, the fix just clean it off.

 

P1443 the purge line is not connected, or it has a crack or leaks.

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