Is this the correct ecm

[PaulRV6]

To be clear about this I didn't want to bore everyone with info that I might have thought was not pertinent but here goes.
This is on my 84 hot air motor that is on my test stand. It had an accel dfi stand alone system on it but never really ran good so I swapped over to a stock 87 computer and harness. This trying to get it to run on my stand with a stock chip and no calpack. The electronic components are all 87 components.
I don't know if this helps or confuses things.

 

[PaulRV6]

With all that said I am still trying to get the noid test lite to come on.
I don't have the MAP sensor plugged in, do I need that? Thanks guys

 

[pacecarta]

dont need map , whats plugged unto the c100 firewall end of harness that attaches to fuse block
you dont need much on that end but do need to supply 12v to the fp/inj wire at C-6 pink/ blk and 12v to D4 and B4

 

[PaulRV6]

Correct and I have that and also G6 to my fuel pump. What I am wondering is it doesn't even get fuel to the injectors on cranking otherwise it would pop. So what tells the ECM it is cranking (RPM) to fire all the injectors simultaneously on start?
Earlier when it fired it must have been some remains of the eather.

 

[pacecarta]

cam sensor signal needed to determine 25 after tdc#1 compression , then it looks at the three windows at crank sensor events to fire correct injector and to advance to the next ign coil , then repeat and resync when the cam sensor triggers tdc again
if it looses the cam sensor after run it will batch fire the injectors

what about ses lamp.. is it steady at key on ,
scanmaster data connected if so whats the readings

 

[PaulRV6]

I don't have the ses lite connected but I'm sure it would be on. I have a turbo link program that reads off of the ALDL connector but for some reason that isn't working.
So I am still trying to figure out why the noid lite isn't working when I crank. I am going to check and reset the cam sensor cause I'm pretty confident the wiring is all there. So it doesn't get an RPM from somewhere to send to the ECM or is that what the crank sensor does?

 

[pacecarta]

look at steve woods no start tree
i posted the link ..here it is again

No Start Tree

..first step is confirm the ses lamp is steady with key on
you can connect a bulb between A5 and 12v
get past all in step 1 then post back

 

[PaulRV6]

Ok I will work on that tomorrow. But what will the ses lamp being on tell me?
I just want to figure out why I don't get the noid lite to work. Thank you

 

[pacecarta]

a steady SES lamp is a confirmation that the ecm is actually powered on and ready to work . if its not lit steady the ecm is not powered , if its rapidly blinking the prom check failed and its not going to run ,.
if ses lamp comes on ecm is ready to go and you can check for and retrieve codes if any with a jump of the A +B aldl pins and read codes by observing the lamp as it blinks out 12 12 12 codes then ends with 12 12 12
if you dont have the aldl plug hooked up you can ground the A9 wire at ecm

Malfunction Codes Reference

ECM Trouble Codes and Diagnostics for Buick 3.8l SFI Turbo V6

www.gnttype.org

so step 1 is make sure the ecm is onboard then move down the list
did you verify 12v to one of the injector pins (ecm grounds to make injectors pulse )
this is the next step after ecm works and thats what the noid lamp test tells you

i have to ask did you read the no start tree ?????


if you check out put of cam and crank sensors with a volt meter at he ign module pins you could rule them out but they still need to be getting to the ecm and the ecm respond with command ,