I just swapped to a 454 TB on my TBI setup. I have a 16197427 and need to verify the pin locations in the connector itself. The connector is labeled a-d on top and I need to know which pin numbers go with what letter. For some reason I can't find this information in my manual and I think I wired it incorrectly. Any help would be appreciated.

 

Out of curiosity, why did you have to repin the IAC? AFAIK, all the TBI vehicles used the same IAC.

 

I had the same trouble.
you can wire them A thru D.... BUT..

2 of them are swapped I think it was A and D but don't remember for sure.
Maybe some one here knows for sure.

 

The 454 TBI uses a flat style plug and the 305 & 350's use a square one.

 

Thanks for the replies.

Yep, I went from the square to the flat connector. The pin numbers are A3, A6, A8, and A7. The connector is labeled A, B, C, D but I am not sure which goes to which. My manaul says to refer to the wiring diagram but it doesn't have them labeled either.
If someone could confirm the pin locations it would be much appreciated.

 

I have the wiring diagrams for the square one, and Im also using the 93-95 PCM as well. Ill dig them out and post it up.

 

See this thread. It has the pinouts for teh later model IACs. Cant say for sure its correct, but if its not, youll know right away when you start the engine. Ill double check it later if I can find my wiring diagrams.

https://www.thirdgen.org/forums/dfi-...ork-730-a.html

 

OK...
I had my hood up today and remembered this thread and all the trouble I had trying to find the same thing.. So I put my meter on it and checked it out and wrote it down.
So here is goes..

A=C3
B=C4
C=C6
D=C5

Hope this helps, write it down for future use.. I know I did

 

Is that for the ECM? The PCM has the rows at the PCMs connectors labeled as:A/B, E/F.

 

.

 

Thank you both! That is what I needed. I have written it in my manual this time Many thanks!!!

 

Glad to help...



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