runs rough, P1316

[thomasinnv]

Ok so i searched for the P1316 and it looks like i might have the UVC harness problem. But, only when the truck is cold. once the truck warms up the SES light goes out and the truck smooths right out. So i'm wondering if it might actually be an injector going out? when i first start the truck when cold, it will run smooth with no SES for about 10 seconds, then the light comes on and it runs rough. always goes away once warmed up though. i am going to pull the valve covers in the next day or two and check the inner plugs. any way to test the injectors while in there, or can they only be tested through a buzz test and contribution test? anything else i might be overlooking? ideas?

[my550]

Let me know what you come up with. I am having the exact same problem.

[thomasinnv]

pulled the valve covers and found one of the uvc plugs slightly loose. went to ford and bought the updated clips and put them in. no more problems, no more ses light. runs like it used to now.

[Big Angry Hillbilly]

2C3Z-14A163-AB is the part number for the clip kit, comes with instructions.

They're becoming increasingly common as these trucks age.