no injector pulse

[ssaltydog]

ok so o have a 91 ranger i pulled the motor i put in a 99 eplorer motor in its the 4wd 4.o sohc

i am trying to just hot wire everything and bypass relays anf fuses for now

this iis where im at i have a couple hots and grounds and everything works i got spark it runs off starting fluid but i am not getting injector pulse my injectors will not fire i have teseted them they workit seems to me my coputer isnt sending a signal i have replaced the copmuter and cam sensor


so i need somone to tell me where to start and i here talk about the anti theft system "pats" now my motor only came with the engine harnes not the cab and dash so i dont have that system does it need to be bypassed



any help is need i have ben stuck here in this spot for months with no money for mechanic but im willing to send cash for an answer thanks for your time

:rangergreen::roll:

 

[Torqueranger]

I would recheck all you wiring and what about the crank sensor ??

 

[2000StreetRod]

PATS disables injectors

On my 2000 Sport if I use a non-PATS ignition key the PCM disables the fuel injectors. You probably need a custom tune that disables PATS.

 

[ssaltydog]

nice answers guy but if the pats isnt hooked up can i just jump wires to make it think it is hooked up

 

[2000StreetRod]

not that I'm aware of

nice answers guy but if the pats isnt hooked up can i just jump wires to make it think it is hooked up

Since the PCM is looking for a specific code from a microchip on an ignition key, and multiple components are involved in providing the code to the PCM, it would be very difficult to fake out the PCM. If PATS were easily defeated it would be a useless antitheft system. I suspect most engine swappers defeat PATS by reprogramming the PCM to disable it.