ECM auto/manual the same?
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
Not really, the bit is used for the shift light if it's a manual bin.
What's your situation? Cant read the prom?
-- Joe
Melting Slicks
Joined: Aug 2003
Posts: 3,409
Likes: 400
From: Lakeville MI
Is there a label on the memcal showing the broadcast code?
If not, you can scan it and get the Prom ID.
The Prom ID can be referenced back to a broadcast code to determine what you have.
If the programming has been modified on the memcal. All bets are off.
Is there something that makes you think you have a mismatch? Strange tcc behavior, etc.?
If not, you can scan it and get the Prom ID.
The Prom ID can be referenced back to a broadcast code to determine what you have.
If the programming has been modified on the memcal. All bets are off.
Is there something that makes you think you have a mismatch? Strange tcc behavior, etc.?
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Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
Thread Starter
Advanced
Joined: Jan 2007
Posts: 85
Likes: 0
From: Mesa Arizona
A whole new can of worms... This ecm(1227165) and PROM(AKFS 2194) are in my 84gmc pickup with an auto 700r4, 3.73 gears and a 350 v8. do i need to get a different PROM or reprogram mine? or will it be ok?
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
'88 is $32B which is with cold start. I'd run a prom from a '89 car with vats disabled ($6E). You get the faster 8192 baud datalogging, crank pulse starting (faster starts), and some better code to work with. You should check out thirdgen.org for info on tuning, or find someone local to tune it for you.
-- Joe
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
In fact, I know '89 was MAF in vette too cuz thats where the ARAP bin comes from, which is a vette MAF bin with a ton of spark advance to make the magazines at the time say "wheeeeeeeeeeeee"..
You need to get a memcal adapter (G1 from moates.net), and either a burner or an emulator, and start doing some tuning.
-- Joe
Cruising
Joined: Nov 2012
Posts: 13
Likes: 0
I know this is an older post and I may get the same answer but I have to ask I purchased 95 lt1 motor an ECM and harness that was a auto car. But my 92 is zf 6 speed got everything bolted up an motor an trans dropped in. what will I have to change in the auto ecm to make it work for my 6 speed if anything at all.
Safety Car
Joined: Jan 2004
Posts: 3,556
Likes: 13
not because of engine operational problems but because the '95 PCM controlled the shifting of the 4L60E auto trans
( '92 ECM only controlled the convertor lockup in the non electronic 4L60) so the PCM will be looking
for feedback inputs from the trans which is not there.
IIRC; the only connection from the PCM to the ZF6 ( other than the VSS for speed indication) is
the CAGS 1 -4 lockout which most guys bypass anyway
Safety Car
Joined: Jan 2004
Posts: 3,556
Likes: 13
