hmm. your in florida, so its not jelling up on you. any tuning done to this truck?

 

No , no tuning done.

 

I would check the main harness to see if it is loose? Mine did the same thing turned out that the big connectors were just a slightest bit loose and would expand then make connection once warm.

 

I would check the main harness to see if it is loose? Mine did the same thing turned out that the big connectors were just a slightest bit loose and would expand then make connection once warm.

This is certainly a possibility, worth looking into for sure.

I've had glow plugs go bad and it only threw a soft code on mine (ie no CEL) so I'd hook up a code reader and see if you have anything stored in there even if your CEL isn't on. If you see any P0671-P0678 then you'll know you've got some bad glow plugs to change. I've got 2 bad ones myself and the truck is a bit rough when cold (usually below freezing) so I just rev it up after starting and it smooths out once it starts to build some heat in the cylinders.

 

Not yet, have to go up to the auto parts place to get them to do it. I'll let ya know though.

 

Well I went up to Advanced Auto and they told me that unless there is a check engine light that their code reader can't read the code!

 

What is a decent code reader I can purchase?

 

You can get a dedicated code reader like this:
http://equus.com/Product/3100/CanOBD2-Diagnostic-Tool

For a bit more, I prefer to get something like the Edge Insight CS or CTS which will do alot more monitoring and diagnostics for you.

 

i got a cheap one and it reads stored and soft codes.

 

I have reseated the main harness again and performed the DIY fuel injector cleaning. It seems that one of those or both have fixed the issue. So far so good any way. I also ordered the Edge Insight CTS so I'll be able to see if there are any codes. I'll post back if there are any. Thanks for your help!

 

It is not the glow plugs-- they come on a few seconds when first start up-- as soon as the glow plug light goes out-- they are OFF-! They are only there to help start the cold engine.

Check the FICM harness at the FICM bracket. It is held down with a zip tie and the wires can short and cause problems.

 

It is not the glow plugs-- they come on a few seconds when first start up-- as soon as the glow plug light goes out-- they are OFF-! They are only there to help start the cold engine.

Check the FICM harness at the FICM bracket. It is held down with a zip tie and the wires can short and cause problems.

Is that harness on the alternator? If not where is it?

 

Got the Edge Insight installed and the trouble codes are as follows:

P0300 Random/Multiple Cylinder Misfire Detected
P0303- Fault Cylinder D-Misfire Detected (CYL3)

P0304- Fault Cylinder E-Misfire Detected (CYL4)
P0305- Fault Cylinder F-Misfire Detected (CYL5)
P0306- Fault Cylinder G-Misfire Detected (CYL6) ​

P0307- Fault Cylinder C-Misfire Detected (CYL7)

Did I resolve the issue with the DIY Injector cleaning?

 

Got the Edge Insight installed and the trouble codes are as follows:

P0300 Random/Multiple Cylinder Misfire Detected
P0303- Fault Cylinder D-Misfire Detected (CYL3)

P0304- Fault Cylinder E-Misfire Detected (CYL4)
P0305- Fault Cylinder F-Misfire Detected (CYL5)
P0306- Fault Cylinder G-Misfire Detected (CYL6) ​

P0307- Fault Cylinder C-Misfire Detected (CYL7)

Did I resolve the issue with the DIY Injector cleaning?

That sounds alot like the FICM harness at the alternator bracket or ECM wires at the fan shroud rubbing/chaffing.

 

Clear them and see that happens. Those are probably from the cleaning.

 

I checked the FICM harness but there was no sign of wear. I went ahead and put a cut piece of heater hose in between the bracket and the harness. I also checked ECM wires at the fan but saw no issue there either.