Who can help?
I am working on this Pacifica After slight warm up, it starts running erratic then stalls. Smell of running rich. Replaced lower and upper intake gasket, all spark plugs, number four coil. code PO204
Seems to run a little rough. still smell rich.
Now has codes PO203 x2, PO204 x2 ,and PO440, on code reader.
The 203 and 440 codes were not present before changing the coil pack.
Any clues or ideas would be greatly appreciated.

 

After checking to make sure your connections are all good and the little keepers are put into the injectors right, Put a few noid lights in the ends of the injector plugs on the wiring harness to make sure its getting something to the injectors. If so, you may want to check those injectors and they might be bad (I cant remember a good way to check them except finding the "bad one", switch it with one that is working, and seeing if that cylinder gives me problems after I clear everything). Erratic idle can be caused by a bunch of things to and it might just be dumping fuel because it might be in a "limp home" mode. Also I see you replaced those gaskets. Did you torque them to the correct number and in a certain sequence? if not that could be your issue too; a big vacuum leak. Hope this helps