Need help 3 and 4 injector quits firing when truck warms up and is above idle. I pulled both injectors and sent them in to be fixed and there wasn't anything wrong with them. The UVCH looks good on both sides. I don't know what it could be any help would be great thanks.

 

What do the outer vc pins/connections look like? I'd check the wires all the way from the injectors to the idm for breaks too.

 

Take the IDM out and shake it to see if you can hear any water in there.

 

I will check all the wires and the IDM sat morning when i put it back together. I hope it is one of those two things.

 

I got it fixed! My chip was causing it,pulled it off and scotch brited the connections and put it back together and it runs great now.

 

Good to hear. That should always be the first step, removing the chip. You should have mentioned you had one. No big deal, glad its going.