I have95 f150 4.9 #2,4&6 injectors not working have power to them but i can pull corresponding plug wires and no change in motor I have a digital multi tester but not sure what reading exactly to look for or if that type of tester will work for that... FYI I changed engine wiring harness with one out of different year but I checked the wire placement in its connector with the old one and they were the same still has original injector harness took it apart and fixed where the wires were touching each other but worried that it could have already damaged the computer...
any help would be greatly appreciated
have been dealing with elect issues for last year have learned alot about auto elect during it all but far from knowledgeable got a ways to go yet .

 

The computer grounds the injector to fire it. I do not know if those injectors are fired together but that would make sense if they are.

 

A noid light test is in order (checks if the processor is providing the ground when cranking and if the injectors have key on power.
Buy or rent one
You can also make your own or use a DVOM (making the connection is difficult with test leads from a DVOM) that is why using a noid light is the best way IMO.
The 1995 processor should be sequential, not batch fire (or bank 1 and bank 2) I am not positive about your 4.9
Your underhood VECI sticker may say something at the bottom about catalyst type and sequential or SEFI
Sounds like you might have 3 injector drivers that are no good in your processor

 

There are 2 banks 1,,3&5. And 2,4&6 batch fire...I had bad capacitor and replaced it today but no change I'm thinking the pcm is shot

 

Yes good chance an injector driver in the PCM has been blown, that could potentially be fixed but it might be just as well to get another PCM.

 

I'll get a new pcm hopefully that will do it... does anyone have a good recommendation on where to get one at

 

Only if it was mass air. There was still speed density in ‘95. I don’t think the 300 ever got mass air but I could be wrong.

 

I agree, the 6 pop may never have got sequential until OBD2 in 96?
Cardone is where to look for a replacement processor
Get the tag numbers off yours and search by the numbers
Mine was JAG1 for my trucks calibration
I found a brand new one for just under 400 bucks and now sleep well
Also, less grief on long road trips

 

Mass Airflow started in 1995 for the 4.9L engine in F-Series trucks. May have been a Cali. emissions only thing.

Cut from my 1995 Ford EVTM manual:

 

Right, so he has 3 drivers out in his processor which does seem a little strange?
In screwell they used Lincolns and SHO Taurus as test vehicles
The Super Coupes and the like, they were all new technology when I was going through the stinkin maters program
That masters cert and 50 cents will buy you a cup of coffee
Hard knocks is the real school you attend for life

 

If the OP has a Federal emissions truck, or perhaps a manual transmission so MAF may not apply either, then it would be Speed Density so we are back to only one injector driver out. That is more plausible.

 

Based off of “May have been a Cali emissions only thing” in rla’s post you have determined that the truck is MAF and not SD?