Injector circuit fault?

[chase6616]

Hello all, im still in the process if fixing the misfire that throwing the code P1316. Everywhere ive read says the ignition system. I replaced the plugs with champions and the wires, tested the coilpacks and still misfiring. After doing to more research, i found another defintion for P1316 saying Injector circuit fault, IDM codes detected and the explanation i got was a voltage problem ie: ground or voltage fault, open circuit, bad resistance at injector, or PCM. If anyone has any ideas please inform, im really getting sick of the MPGs and performance im getting. Thanks

 

[joey]

Have you tried pulling the injector plugs one at a time to see if the engine gets worse or better?

 

[chase6616]

yes i did and they all made it perform worse so i ruled out injectors, any other advice?

 

[joey]

sorry, I just realized that you have two posts for the same issue... no wonder I am not getting anywhere in my own head... it is just me...

When is the last time you changed your O2 sensors? Just the front ones that is.

 

[chase6616]

I actually just got the disco about a month ago and the guy i bought it from told me that he recently replaced them...however if they are bad wouldnt it throw a code for them as well?