been having trouble with m car starting the injectors are getting a signal from the computer the lasttime i check but they aren't spraying during start up but if i put 12 volt power to em i tested all of them they will spray that way but just not when i'm trying to start

 

read this

http://www.hotrodlane.cc/Instruction...tionswitch.htm

also the injectors are ground controlled, so make sure you have constant power at the injector in start and run

 

Have you scanned for codes? There are several codes that shut down the fuel system, and not all of them turn on the SES light.

Might want to add basic info about the car, like year. Not all years of the LT1 are the same.

 

Have you checked the injector fuses in the under hood fuse box?

 

yea i checked the fuses they are good and the only codes i got was the maf sensor has low frequency i don't know what else it could be i have a new fuel and everything i don't think the fuel rail is stoped up

 

how do i check if they power to them in start and run

 

With the key on, check the voltage on the pink wire in each injector harness connector. Should be 12V.

Did you try starting it with the MAF sensor disconnected?

I'll repeat one more time - ADD A SIGNATURE WITH BASIC INFO ABOUT YOUR CAR. Not all years are the same. Your comment about the MAF low frequency code would indicate you have a 96 or 97, but why make the people who are trying to help you guess??????

 

yes i tried starting with it disconnected still nothing....i checked again and now the injectors are getting no signal at all

 

Do you have 12V at the pink wires? If not, the fuses are no good. Or, do you mean you checked for the signal to fire the injector, which is a ground supplied by the PCM?