same wire diff function?

[Floor]

Have a look at this :

Same wire color for 1 & 7, same color for 3 & 8.

Is it safe to say they inject at the same time?

 

[supercar1of1]

Looks like they go into different PCM ports.:dontknow:






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[supercar1of1]

A poor mans way to check would be to put a finger on the 1 and 7 at idle.

You should be able to feel if they fire at the same time.



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[Floor]

Looks like they go into different PCM ports.:dontknow:






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that's a fact.
But do these cilinders have the same timing all the way?:dontknow:

 

[Floor]

bump ttt

 

[Floor]

c'on guys, I know you know.
Is the fuel injected in these cilinders at the same time simply because the wiring colrs are the same or is there a difference cause they have their own PCM input (Edit: I mean output of course):dontknow: :dontknow:

 

[breederofkoi]

those are probably ECM outputs, not inputs. But regardless of whether they are inputs or outputs, this will still apply --->Wire color means nothing (just multiple wires of same color). Different because of the different ECM pin locations. Hope this helps

 

[Floor]

maybe, just maybe they fire the cilinders at the same time:dontknow: and the common color sheme isn't coincidence?

(checking this with regards to my LPG sequencial injection)

 

[Muzzy]

Check the connector pinount diagrams for the PCM. You should see corresponding outputs for the injectors. I would not assume they are the same. Injectors are sensitive to resistance which is sensed by the PCM. I can't imagine they would split an output from the PCM for two injectors. Probably just ran out of money to pay for the extra colors...

-Muzzy

 

[Floor]

don't need to check , PCM output pin's are on the diagram aren't they
I'll assume the signal will be different as well...

 

[belgiumbarry]

don't need to check , PCM output pin's are on the diagram aren't they
I'll assume the signal will be different as well...

don't you thrust DODGE ? :dontknow:

 

[breederofkoi]

maybe, just maybe they fire the cilinders at the same time:dontknow: and the common color sheme isn't coincidence?

(checking this with regards to my LPG sequencial injection)

sorry, the color scheme IS coincidence, thats all.. Look at it this way, they're are only so many combinations of wire colors (I think 324 combinations, but my math may be off) before you have to start over and duplicate. If you had something with 1000 wires in it, your going to end up with wires of the same color, this doesn't mean they have the same function. They will not fire at the same time, because the cylinders are not in the same position or on the same stroke. Theoretically, if they fired at same time, you could have one cylinder on the intake stroke, and one on the exhaust stroke (depends on firing order and crank design). They are multiple wires of the same color, nothing more than that. There is another dead giveaway besides the ECM pins. The other giveaway is the Circuit or Wire Identification #. On a good legitimate schematic, every wire will be labeled with a ID #, thats how you differentiate between wires of the same color. I'll explain below.

 

[breederofkoi]

Hears how you read this schematic, I think, unless dodge engineers have done something stupid again. It looks like a normal line schematic, they're easy to read. Address and Tree schematics tends to be a little more difficult to read. Take INJECTOR CONTROL #1 for example, look at the numbers around it, I'll explain. Wire starts at ECM Connector C2, pin 4. This wire is Brown with Yellow stripe and is 18 gauge. The wire identification # is K11. Wire terminates at Pin 1 of #1 Fuel injector. Wire starts at Pin 2 of #1 Fuel Injector. This wire is Brown with White stripe and 16 gauge. The wire identification # is K342. This wire has a splice or junction with all the other wires labeled K342. I can't tell you where this wire terminates because it does so on another page. You'll have to go to page 8W-30-5, look for a triangle with a C in it & follow it from there (should go to connector C130 if I'm not mistaken). If you wanna post that page, I can trace it out for ya.

 

[breederofkoi]

Hope this helps, lemme know if you have any questions, I'll answer the best I can. If I get some free time, I could make up a electrical schematic for you, but I don't know when I'll have the time or a way to post them (don't own a digi camera or a scanner).

 

[breederofkoi]

maybe, just maybe they fire the cilinders at the same time:dontknow: and the common color sheme isn't coincidence?

(checking this with regards to my LPG sequencial injection)

What are you tryin to do with LPG, I may be able to help you, then again, I may not...

 

[Floor]

no it's ok , clear enough for me.
We had some discussion on a dutch board regarging sequential LPG injection.
Statement was made 2 cilinders pairs had the same moment of injection simply because the wire colors are the same. You would have an enhanced V8 + 2 regulation that way which would be not ideal and in contradiction with what the supplier states in his leaflet.

Thsk for digging into this :congrats:

 

[breederofkoi]

No problem man. Hope I was able to help you. Thats an easy schematic to read, I'm used to schematics that have so many lines and are printed so small that you have to actually use a magnifying glass and the point of a pen to follow a wire around. The hardest part was trying to think how to explain it to you and make it sound simple. Let me know if you got any other questions.

 

[HaroldD]

Have a look at this :

Same wire color for 1 & 7, same color for 3 & 8.

Is it safe to say they inject at the same time?

They very well may (not sober enough to research firing order right now:beer: :beer: ), but a possible explanation for the different connections to the PCM is for OBD purposes - codes can be generated per injector this way...