motor swap, injectors not firing

[gar70614]

so i swaped a 3500 in my 99 cavalier z24. i spliced the cav and a 99 grand am harness together to run the engine. external crank trigger also. it wont fire up? it cranks and wen i give it a lil shot of starting fluid (i know its a terrible idea) it will fire? i have fuel pressure at the rail and the injector feed is hot any ideas on were to start?

[3400-95-Modified]

Passlock system on the 99 GA ECM... its shutting off the fuel system.

Do you have a DHP or a HPTuner to disable it?

[gar70614]

remember u worked on my ecm lol

[IsaacHayes]

!!! LOL

[pocket-rocket]

*looks around for the thread with the facepalm pics*

[3400-95-Modified]

Yes I face palmed that one... lol

Does anyone have a way to test and see if the pass lock system is still activating?

I simply went in and disabled it as it is in my 97 ECM and I have never had an issue.

I'm going to look at your bin tonight if I get time and see if I see anymore tables regarding passlock in tiny tuner, DHP may not have them all mapped. If I do I'll fix it on my buck.

[gar70614]

thanx alot man lemmie know

[3400-95-Modified]

I've compared it to mine and the VTD is set for 1 which means VTD disabled... All my other VTD tables are Zero, yours had values... But I'm not sure if that would matter since the main should disable all of those anyways.

Let me know if you want to try this small change or not... or if you need to investigate further to see if its a wiring glitch.

[gar70614]

is there anything else i can check? the injectors feed is hot i havent checked the ground but it should be fine. ill check it tomorrow if i can but is there other isues it could be?

[3400-95-Modified]

That's what I'm not sure of and I was hoping others would chime in about... I'm not sure of the best way to test a injector lead to see if its firing since they only fire in ms pulses... maybe you would need a scope to see that I'm not sure, or a quick analog meter... and I mean quick.

Do you have the SES system setup? and do you have any codes? or a code puller to check that? I know the SES light is probably on since the car has yet to fire off.

Now with the harness swap did you carry over the BCM, and ignition cylinder? I'm wondering if you have the pass-lock system in there but since it's "disabled" it's throwing a fit being connected.

Brendan? you out there? I was wondering if you could try eliminating your pass-lock by just doing the pass-lock disabled function in DHP and see if your car will start after... IIRC we tried that once and it didn't because everything else was there.

[gar70614]

i dont have a bcm cavaliers didnt till 2000. wen i get home ima put a meter on the feed to make sure i hooked up a 12 volt feed and not a 5 volt by mistake cuz i checked it with a test light. but thats were im goin next. idk about mil light cuz i dont have a scaner

[pocket-rocket]

They may fire off in ms pulses, but you can still catch them with the naked eye since they fire in quick succession.

http://60degreev6.com/forum/f102/behold-the-power-of-the-ranger-t40259/post362096

(PS, don't mind my little rant in that thread, I wasn't in a good mood after working on that retarded thing...)

[gar70614]

well feed is gettin a strong 12 volts and ground is good. im gettin nothin pulled a plug ang not eny signs of gas. and hasnt even tryed to start on it own. im thinkin it gotta be pcm.

[IsaacHayes]

Hook up an LED with a resistor so the LED doesnt fry and see if it lights up when cranking/etc.

[geldartb]

Now with the harness swap did you carry over the BCM, and ignition cylinder? I'm wondering if you have the pass-lock system in there but since it's "disabled" it's throwing a fit being connected.

Brendan? you out there? I was wondering if you could try eliminating your pass-lock by just doing the pass-lock disabled function in DHP and see if your car will start after... IIRC we tried that once and it didn't because everything else was there.

try'ed this out today. disabled the vtd and zeroed out the other two tables and still the same results. it would start and then die.

its either gotta be BCM related or there are hidden tables we cant see in DHP