2000 powerstroke sudden loss of power

[coalbiz]

I have a 2000 excursion with 7.3 that suddenly lost power? it starts right up but sounds like its running on 4cyl. i replaced the cps and still has same issue. My codes that are coming up are: P0671,P0673,P0675,P0677 and P1316? any help would be greatly appreciated

[ridiculously_necessary]

i dont have the code info, but check your uvch's (Under Valve Cover Harness) it leads to your injectors and glows. They have been known to fry. 4 connectors, two under each VC in the engine valley.



edit:

google tells me:
P0671 Injector #1
P0673 Glow Plug #3
P0675 Glow Plug #5
P0677 Glow plug #7 circuit fail
P1316 IDM circut fail (google to me to a thread here, the guys UVCH connector was just loose)

sounds like a fried or loose UVCH at first, all one side of the motor. start there. let us know what you find!

side note, if its fried, a lot of places offer new UVCH's with glows. most people dont reccomend anything other that motorcraft glows due to swelling (autolites, etc). just FYI if you find and replace before posting again.

[Dietoremain]

not sure bout codes but check the UVCH i bet one of thems fried....aka 4 cyl.

[coalbiz]

Thanks for info... i did pull the valve covers and they look good- is there a better way to check them? the codes indicate glowplug circuit failure on #1,3,5, and 7. the last code is p1316 which indicates:injector circuit/idm codes detected? I just got the code info off of another site...I love my 7.3's but i never had to work on them before? my f550 has 230k with no problems and my previous f250 had over 200k and no problems? this excursion just hit 100k ...thanks for any help and advice

[ridiculously_necessary]

ive never "seen" one fried, but do know it happens. if the harness it tight then i would assume its bad, BUT ill let others chime in. chekc the harness wires as well, make sure rodents didnt have a midnight snack on it.