Hey guys looking for some experience here. I've got a 4.0 ohv v6 in my 95 ranger. I bought a reman motor and put it in when I did the suspension overhaul and I put in all new components with the new engine. Injectors being one of them. After driving the truck for six months with no issues I suddenly had a dead miss while coming home from work. Checked it all out when I got home and everything seemed to be fine until I ohmed the injector for cylinder 1. It came out to 350 ohms so I replaced it and have had no problems until just now. I'm down in NC visiting my brother for the holidays when I get another dead miss while driving to the ocean. Get back to his house and immediately ohm the injector and once again 342 ohms on cylinder 1. Is there anything that's any of you have witnessed causing repeated cylinder 1 injector failure? Or do I keep getting bad parts. All other injectors ohm at 7.2 and the misfire moves with injector. And help will be appreciated. I can make it home but I want to figure this out so it doesn't happen again.

 

No, never read of computer's "driver" ruining an injector, but it is possible

Electrically a fuel Injector is just a coil of wire around a metal core, when powered it pulls open the valve that lets fuel squirt out

Your new injectors are reading lower than spec at 7 or 8ohms
10-18 ohms is expected, and what Ford uses
Generally speaking the average is 12-14ohms in all the ones I have tested over the years

Could be the lower ohms is causing an issue in the cylinder 1 driver(in computer), causing it to burn out the injectors coil
I might be inclined to get all new injectors with ohms closer to 14


If same brand then could just be 2 bad injectors but a long shot

I would get another new injector but put it in cylinder 2 or 4, and then that "tested" injector in cylinder 1
Or did you do that last time?

 

Sorry I made a typo all the other injectors ohmed at 12.7. Just went and double check to make sure. Yes I've swapped injectors around and put the new one in cylinder 1 while I put the existing from 2 into 1 and now it's cyl. 1 that has a bad one again. I just don't get experience with these trucks at my shop and I'm out of state so I can't use any services to look up common failures. Just seeing if anyone has seen this before.