Some of you have seen my thread on this titled "Intermittent CE light...." and I still dont have it fixed. I decided to start a new thread because I am at a total loss, and dont know what to do. I desperately need to sell this truck and this is the only thing keeping me from being able to do that.

Here is a rough summary:

Truck is a 2003 F350 7.3L with 141,000 miles

Intermittent CE light, THE TRUCK DOES HAVE A ROUGH IDLE, A SLIGHT LOPE, I didnt notice this at first. you can feel it shake a little.

I thought it was the UVCH so I went in there and both sides already had the ford shims in it. The dealer pulled the codes and showed a 1273 and 1316. They also did the CPS and Speed control recalls at the same time. I tested the IDM connector and it showed high resistance. I bought a pigtail from riffraff to test the uvch, but i dont know what I can test that wayI found one spot on the wires over the driver side VC right before the big square connector that looked a little worn, but the copper wasnt exposed. I taped it up. I have a Superchips scanner that pulls codes and I clear them after everything I do and it keeps coming back. I thought I had it solved when I put in my IDM out of my Ex, cleared the codes, drove it and got no light. So I bought one from a junk yard, put it in, and the code and light came back. I returned it, ordered one from Rockauto, which is a reman GB unit, and still have the same problem. I dont have AE. I have spent so much time and money on this problem, and I now feel like it has all been a total waste. I dont know if its an injector, solenoid, connector, harness, bad IDM or what. I guess I have to start from scratch and go through this process all over again.

Can someone please advise me on what I should test first?

 

Bump to the top. I am so over this that I am about to take it to a diesel mechanic, so he can find something simple that I missed and charge a few hundred bucks, which is exactly what I have been trying to avoid this whole time.

 

I am glad yo started a new thread, if anything hopefully it will get a few more eyes on it.

 

Yes, I have searched and read so many threads on so many different related topics that I cant think straight and need a fresh perspective. I think I either have a bad wire somehwere or a bad injector.

 

Times like this would be ideal to have a full function scan tool. A buzz test might isolate a potential solenoid issue that you could investigate further. P1316 indicates there are IDM codes stored so the absence of that info has us all guessing at this point.

 

If you think its the IDM send it to swamps and have them test repair or upgrade it.

Chet

 

Have you posted in your local chapter to see if someone near you has AE? It's down towards the bottom of the forum section.

 

Studawg,

How quickly are you trying to sell, do you have a buyer? I won't be home for a couple of months but I'd be happy to try to help. I can get my hands on a Ford NGS tester which can run all of the tests. I know this probably doesn't help much, but I hate to see a fellow South Cackalackian suffer!

 

Just a random thought that popped into my head when i read what you were saying about something simple...you checked the harness UNDER the valve covers but what about where the main harness plugs into the uvch?

I have the same code intermittently as well (just started yesterday). Luckily I have AE and was able to retrieve the code with a buzz test. It came back as cylinder 5 hi/lo open so I wiggled the passenger side connection on the head and it went away. That's what made me think it might be that. Sometimes those wires can get bumped around or fouled up and simply back out of the connector enough that you hit a good size bump and it throws the code.

Thia would also account for it
Not running poorly simply because it only momentarily becomes disconnected which throws the code but since you cannot run a buzz test you cannot clear the idm codes

 

Stu,

If you want to ride down to Athens, I am going to have an expensive scanner for mine this weekend. We can hook it up and see what we can rattle out of it. I almost got a job just south of Greenville. I think it is about 70 miles maybe 80.

 

Thanks Robert, I had a guy coming to buy it this afternoon until the light came back on. I told him I want to fix this issue before I sell it. I need to sell it ASAP. I really appreciate the offer though.

 

I am going to check on this. I think I tried that but Im gonna fiddle with it again to be sure. Thx

 

I appreciate it but Im gonna take it to my diesel mech on Monday if I dont figure it out in the meantime.

 

Are you saying that maybe I havent actually cleared the codes? The SC thing says it clears the DTCs, are there IDM codes that maybe it doesnt clear?

 

I believe that if youa re still getting P1316 every time you scan, even after clearing the DTC then you need to run a buzz test and retrieve whatever codes are stored in the IDM. This will tell you what is actually setting the P1316. I had this code come up the other day, ran a Buzz test and retrieved a P1275 code which is for Cylinder 5 hi/lo side open. I had a loose connector on the passenger side harness where it plugs into the UVCH. After tightening it I checked for DTC's again and there was no P1316 code anymore. Ran another buzz test the other day and all injectors sound the same, but I'm still getting the P1275 code after the buzz test. All I meant was that your SC might not be able to retrieve codes from the IDM resulting in you not knowing exactly what is going on. Also, if you cannot run a buzz test you will keep getting the P1316 code until you do I believe.

Now my question is related to my issue, if I am not getting a P1316 code, but still getting codes after running a buzz test, does this mean that I need to somehow clear that code from the IDM? or am I still having an issue with the #5 hi/lo connection?