SOB well as luck would have it DTC 1223

[MACKIN]

Unfortunately after behaving for a few weeks it's back. The other morning I started the truck and it ran ruff and illuminated the SES light and thats the code that it threw,1223. Cleared it restarted threw it again.

Checked all harnesses as suggested in previous thread seen nothing. Cleaned the bale connections nothing. At one point although driving down the road it started to run fine then on restart it was running ruff again.

For some reason also I cannot get my Tech II to read balance rates? Also when I shut off (disable) Injector #1 I cannot feel or hear a change in idle. That sucks! The only thing I did not check was wires under the valve cover as I'll leave that up to the experts.

So my question(s) are where do I go from here? Is there anything else to do diagnostically to pin point the problem? What do you 'think' it might be? Is it fricken injectors again? Is it just the solenoid? Can they be swapped out ? This kind'a pisses me off as this is my third set! Also is it worth doing just ONE injector or the whole side? What do you think ballpark cost is for ONE verses the whole bank?

Unfortunately I have mechanical skills but never tearing into this truck I have hesitation in tackling it myself. IF I had someone knowledgeable on this working on it with me I'd have at it. If there was a play by play tutorial on this I'd probably jump in. I don't understand why I have such apprehensive to doing this job I've done so much mechanical work in the past. For some reason it just doesn't give me that Get'R'done feeling. Time is also a factor as in I have none to play around and leave it in pieces for when I have the time. That is really the biggest problem to tie it up in my shop and it isn't mobile.

Any advice will be appreciated.

 

[stacks04]

Could be the ficm, could be the wiring from the ecm to the ficm for number 1 injector, could be the ecm, or it could be the wiring from the ficm to the injector.

 

[MACKIN]

I was just going to send you a PM.

The wires look good from what I can tell. ECM? Hmmm that is a easy swap out I have the stock one that's worth a shot but I don't think so be really weird if it was. I will double check the FICM to Injector wire which number one is (?) passenger side first cylinder or do I have it bassakwards? I'm leaning to a bad FICM or Injector which sucks.

So I'm gonna recheck wiring mentioned, then swap ECM out, if no change try and find a good used FICM, IF ANYONE KNOWS OF ONE READING HERE PLEASE SEND ME A PM OTHERWISE I'LL LIST A WTB IN PROPER FORUM if none of that works ,which how will I know for sure as it's intermediate, or unless it has finally defaulted for good, I'll be probably dropping it off for a visit. Don't want to buy a new FICM for testing ,hopefully some one has one kicking around.

Thanks for the info. This shit happens I know but always at the wrong time.

I have to snap the bales in later and clear code and check wiring this afternoon. Then I believe the weather clears up Thursday and they'll be some road testing coming I guess.

 

[MACKIN]

Looks like the most difficult thing is going to be getting the wires off the FICM.

Call me a tard if you will but holey sheep shit! Odd looking bitch!

 

[MACKIN]

Yup checked around ,cleared code ,connected bales ,started truck ,ran fine. This is why it's a PIMA!!!!!!

Anyway here is what my balance rates look like,bare in mind it's Injector 1.

 

[MACKIN]

Cold start up also as you can see truck was only running about 6 mins. All in spec although. In park

 

[stacks04]

Ecm connector 1(blue) terminal 3 black wire, ficm connector 1 terminal 66. Ficm connector is black. Try jiggling the wire or harness and check the pins on the big bulk connector top of engine(black one). Make sure the terminals aren't backed out or worn. Make sure the female side hasn't been opened up so its a loose hole

 

[Slammed2007Lbz]

balance rates on cyl. 3 & 8 are getting close, i think +-4 is the limit

 

[1953drtelco]

Subscribing

 

[GMC_2002_Dmax]

If it is the "ECM" you should send it in now, by the time spring comes in 6 months maybe you will have it back............:hug:

Sorry, couldn't resist

 

[MACKIN]

If it is the "ECM" you should send it in now, by the time spring comes in 6 months maybe you will have it back............:hug:

Sorry, couldn't resist

He heee you dick! To be honest with you I don't believe he would do anything for me plus since I crawled off Nicky Poos lap I have no inside track or power. I'm probably not on his good side anymore but I don't care.

I have a Edge Box and I'll get me a Old Quad 215 and have me a bastard stack and call it a day!

 

[MACKIN]

Anyway I'll be taking it out of the stable Thursday ,Friday the latest do some more digging searching testing touching pulling wiggling looking smelling and all that happy horse shit!

See if it repeats.

Believe me I don't want to do injector or injectors for that matter but I would like to know what exactly is wrong. Hopefully it isn't that and a wire (hard to believe) ECM (again hard to believe) FICM (Ya good possibility but is a newer one with not many hours or miles on it from GM) Injector (knowing my luck probably!) bottom line I hate intermittent can not duplicate electrical problems.

Simplest easiest perhaps quickest way to resolve this is drop it off with Joe but if it aint doing it I assume he'd be in the same boat except he knows better where to look as oppose to me. Like the female pins on the bale connectors how do I know if they are slutty?

So after this weekend I'll have to decide the next best course of action. It's one of those I want to know but do I really want to know ordeals.

 

[MACKIN]

Well I figure I might as well update to those following along. For those that are board ,for those that are trying to help me (TIA) much appreciated for those that might have a similar problem and for those just looking for something to read.

This weekend proved or showed absolutely nothing! Have I mentioned I hate Gremlins? Except for mind games I've come to the conclusion that it's something simple although perhaps expensive. This weekend my truck ran absolutely fine except the usual mass air DTC it throws.

In some ways I'm not looking for trouble as in wiggling wires and such as I feel it's unrelated. I believe it to be more of a lazy or inconsistent electrical Gremlin as in the FICM or a Injector solenoid. Also for some reason I feel that my rough idle ,not the surging ,but the roughness you feel in the seat and steering wheel are related. This also is a intermittent issue. For instance this mourning it idle so smooth and at other times it isn't. Weird

So for now I'm just going to have a wait see attitude. If it was my only vehicle things would be different. Between that and winter coming less driving I figure wait see if the problem decides to stop being intermittent and steady. Maybe it will fix itself ,who knows.

Something says keep digging and find it but on the other hand something says don't go looking for trouble. Maybe cleaning the bale connections ,all I've done other than look around,fixed it. I hate electrical problems with a passion!