Orange cv713

Well it has new injectors and it did the same with the old ones it just had overhead run with new rocker bolts installed and it was the same before and after it's definitely a timing issue of some sort all the cylinders are the same temp at idle

So something I have not thought of but could a fuel temp sensor or a inlet air temp sensor cause this

Okay so sorry for the long break I have been swamped lately, but a little update so I have changed the fuel pressure regulator fuel pump and had eup code uploaded in the ecm and installed a new intake humidity sensor so at this point I am leaning towards ecm, every fuel part is new

Okay that is awesome thank you and I chased the wires out of the computer for the ambient air temp sensor and it was the ones I suspected that are dead head with a empty plug in the end

So hear is some more ignorance on my part I haven't found a port to check pressure so do I take the return check valve out and tap in there

No man but that is definitely next

Okay man thank you I will look and make sure but I am pretty sure I found it with a dead head zip tied up in the frame rail, but it had other new eups in it and I am not sure they had cal codes either. I think I am gonna try and check fuel pressure also

So I have learn some read off the intake sensor and mine has no wiring or bracket for it just a pig tail zip tied and I get no blink code and my lightning bolt definitely works, but what would it do if the eup codes where not entered in the computer

when I get home I will look and see what they say I did some looking on the internet, and found what the factory sensor looks like and I definitely don't have that the only harness to the front of the truck is the headlight and the abs I have a suspicion that the motor has been out of the truck before the pedal valve on the fire wall when I changed it was mangled all to pieces towards the engine most of the wiring is kinda just thrown wherever it will go it had a front end collision at some point according to car fax the bumper is definitely new and the radiator is new, but when I got it it seemed to me they where also chasing this issue it had new eups that where aftermarket of some sort but I figured that maybe since they wasn't mack that may have been the issue so I changed them to mack ones

So I have a buddy that I haul with that has a 05 cv with a 370 in it I am gonna go and try to look at his this evening and one maybe figure out where it goes and 2 figure out where it goes in the wiring harness I have found 2 wadded up harness on top of my motor that are zip tied one is pretty long both with 2 prong plugs, but I'm not getting a lightning bolt so the circuit must be closed somehow

So I found a little bracket behind the radiator on the passenger side but nothing is on it beside the abs wires are zip tied to it but its has had alot of other things I have resolved along the way none real major I work it every day and it does well other than this fuel issue and it has done it since I have got it the ambient air temp sensor makes since to me because it don't do it until you drive it and it gets heat, on start up and cold its clean and certain times during the day it acts fine but that would make sense if it was wadded up in the engine bay somewhere or the wires where cut completely

Okay yeah man I know this is crazy but its definitely not there so I bought this thing from a auction and it has been well melested in it life so I guess my next thing is trying to figure out where it comes out of the harness at

Man I have looked all over the front of this thing and followed every wire to the front with no luck I am starting to believe its been cut off or something I have search the internet for pics of the location and came up with nothing but I am starting to lean towards that's the issue if its been cut off or someone has taped it up in the engine bay somewhere

And man I feel kinda goofy I have look this thing over from one end to the other and have yet to find the ambient air temp sensor

So I just unplugged both and a stayed running on both, I did just check grounds to the block and all where corroded I wonder if that could be a issue