Lost my ECM, don't know what I need
09-16-2004, 10:32 AM
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Lost my ECM, don't know what I need
Okay, so I'm doing a V6 to V8 swap and I managed to lose my ECM.
So I stalk Ebay waiting for someone to be selling an ECM from an 85 305 carbed Firebird and manage to find one. I found that ECM number on site that said it was for an 85 305. I was sure the prob was solved
But this thing doesn't match my wiring harness. It has a connection on it that looks like the bottom of the card that went into a PC Jr (Half of a part of an ISA card).
I have a sqaure connector that comes from my standard trans. and a connector or two that comes from the drivers side part of the harness. I haven't been home for a few weeks, can't remmeber how many connectors, but I know they are sqaure or rectangle.
This is the ecm I got:
Ecm #1226865
http://cgi.ebay.com/ebaymotors/ws/eB...RK%3AMEWN%3AIT
Anyone have some insight on what ECM I need? It's for a canadian(no smog stuff) 1985 305 non-H.O. carb, standard Firebird.
Thanks
So I stalk Ebay waiting for someone to be selling an ECM from an 85 305 carbed Firebird and manage to find one. I found that ECM number on site that said it was for an 85 305. I was sure the prob was solved
But this thing doesn't match my wiring harness. It has a connection on it that looks like the bottom of the card that went into a PC Jr (Half of a part of an ISA card).
I have a sqaure connector that comes from my standard trans. and a connector or two that comes from the drivers side part of the harness. I haven't been home for a few weeks, can't remmeber how many connectors, but I know they are sqaure or rectangle.
This is the ecm I got:
Ecm #1226865
http://cgi.ebay.com/ebaymotors/ws/eB...RK%3AMEWN%3AIT
Anyone have some insight on what ECM I need? It's for a canadian(no smog stuff) 1985 305 non-H.O. carb, standard Firebird.
Thanks
09-16-2004, 06:03 PM
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Car: check
Engine: check
Transmission: check
The ECM 1226865 is what is used for that vehicle in US trim. For a Canadian vehicle the ECM is most likely only used for TCC and the electronic distributor.
Does your vehicle use an O2 sensor?
I don't think this is much help. But it may help point you in the right direction. Need to get a Canadian vehicle ECM. Or convert to an older (centrif/vac) distributor and use a vacuum switch for TCC lockup.
RBob.
Does your vehicle use an O2 sensor?
I don't think this is much help. But it may help point you in the right direction. Need to get a Canadian vehicle ECM. Or convert to an older (centrif/vac) distributor and use a vacuum switch for TCC lockup.
RBob.
09-17-2004, 10:55 AM
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Yes, it uses an O2 sensor.
It's standard so I don't need a TCC lock-up. (Torque converter, OD right?) That connector that comes from the T5, is for reverse lights I believe.
Would there be a loss of MPG if I used an older distributor? Or any other benefits?
I'll look for an canadian ecm and see if it exists.
thanks
It's standard so I don't need a TCC lock-up. (Torque converter, OD right?) That connector that comes from the T5, is for reverse lights I believe.
Would there be a loss of MPG if I used an older distributor? Or any other benefits?
I'll look for an canadian ecm and see if it exists.
thanks
10-27-2004, 12:30 AM
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Thought I'd update this old tread since my new pet peeve is unresolved threads I find when searching.
I'm a dumbass.....
too much time passed between stripping the donor car and putting it all in mine. I got a contract out of town and was tring to do work on the thing every other weekend when I has home and party hard at the same time.
My donor car didn't have a computer (no air pump, non-cc carb and dist). Two of the harnesses I thought went to a computer went to each other. the other went to the cruise control (if it was there). There isn't an oxy sensor on my LG4 y-pipe, I was out of town, and could of sworn I seen one....must a been the V6 one I was thinking of..
If your car was sold in Canada, and didn't have FI and the car didn't have an air pump: You most likely don't have an ECM.
I started up the V8 last weekend. It started almost right away. and after setting the lash it sounded awesome with the new 3" pipes and dynomax muffler I put on a day before V6 blew almost a year ago. So, i'm proud of myself right now.
I'm a dumbass.....
too much time passed between stripping the donor car and putting it all in mine. I got a contract out of town and was tring to do work on the thing every other weekend when I has home and party hard at the same time.
My donor car didn't have a computer (no air pump, non-cc carb and dist). Two of the harnesses I thought went to a computer went to each other. the other went to the cruise control (if it was there). There isn't an oxy sensor on my LG4 y-pipe, I was out of town, and could of sworn I seen one....must a been the V6 one I was thinking of..
If your car was sold in Canada, and didn't have FI and the car didn't have an air pump: You most likely don't have an ECM.
I started up the V8 last weekend. It started almost right away. and after setting the lash it sounded awesome with the new 3" pipes and dynomax muffler I put on a day before V6 blew almost a year ago. So, i'm proud of myself right now.
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