External fuel pump
Old School Hot Rodder
Joined: Feb 2006
Posts: 6,472
Likes: 11
From: Exmore, VA
Sequential injection did not start until 1994 5.0L, 1995 5.8L both automatic trans versions. 7.5L did not get sequential except California spec.
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
Here's why I'm not in favor of having two threads going on the same topic: On just this one thread I keep seeing reference to the test connector having a "1" on it when it should have 5 volts. If we aren't getting codes shouldn't this be run to ground? It doesn't seem correct and yet there seems to be no answer.
Cargo Master
Joined: Jun 2013
Posts: 3,176
Likes: 15
From: Somewhere n North America
Here's why I'm not in favor of having two threads going on the same topic: On just this one thread I keep seeing reference to the test connector having a "1" on it when it should have 5 volts. If we aren't getting codes shouldn't this be run to ground? It doesn't seem correct and yet there seems to be no answer.
When doing this manually, STI is jumped to the SIG RTN, which grounds STI, and the test starts.
Cargo Master
Joined: Jun 2013
Posts: 3,176
Likes: 15
From: Somewhere n North America
Make sure there are pins in the computers for 17, 22, 46 & 48.
There are some missing pins because they were not needed at the time or an engineering change was applied.
Cargo Master
Joined: Jun 2013
Posts: 3,176
Likes: 15
From: Somewhere n North America
Thanks, what was I thinking ....??
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
It is sometimes hard to keep your generations straight and what pertains to what... and sometimes remembering who your audience is.... I've done it before, I think everyone has. 
Cargo Master
Joined: Jun 2013
Posts: 3,176
Likes: 15
From: Somewhere n North America
True. I think the Mustang 5.0L had Sequential Injection introduced in 86'.
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Cargo Master
Joined: Jun 2013
Posts: 3,176
Likes: 15
From: Somewhere n North America
Give them a ring this morning, verify the information on the computer they have. If it does not have "GS1" try to cancel the order.
Thread Starter
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Senior User
Joined: Apr 2012
Posts: 452
Likes: 0
Too late.
I'm coming up empty for an S1B GS1 computer. Found one on Ebay but it was already sold.
I'm coming up empty for an S1B GS1 computer. Found one on Ebay but it was already sold.
Cargo Master
Joined: Jun 2013
Posts: 3,176
Likes: 15
From: Somewhere n North America
I think you will be ok, I have handled 4 of the "S1B" versions this year, and they were all “GS1”.
Now, I would not have paid $100 for a used computer without a return agreement.
The two computers I saw on E-Bay, were for an 86’ and an 85’ 4x4, I would not suggest either one.
When you recieve your computer, photograph the lables, and post please.
Now, I would not have paid $100 for a used computer without a return agreement.
The two computers I saw on E-Bay, were for an 86’ and an 85’ 4x4, I would not suggest either one.
When you recieve your computer, photograph the lables, and post please.
Last edited by vjsimone; Jul 15, 2016 at 06:05 AM. Reason: Adding text
Thread Starter
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Senior User
Joined: Apr 2012
Posts: 452
Likes: 0
I should have waited to order until I was sure I had the right computer. Don't know if they'll take it back, but I'll try to sell it on Ebay if they won't. Still can't find the right ECM. Places like auto zone and advanced auto list hundreds of ECM's that they say are an exact fit, but the numbers are all wrong.
Cargo Master
Joined: Jun 2013
Posts: 3,176
Likes: 15
From: Somewhere n North America
I should have waited to order until I was sure I had the right computer. Don't know if they'll take it back, but I'll try to sell it on Ebay if they won't. Still can't find the right ECM. Places like auto zone and advanced auto list hundreds of ECM's that they say are an exact fit, but the numbers are all wrong.
But, like I said, all the "S1B" versions I’ve seen were "GS1", so we'll hope for the best.
Post the label when you receive it. Compare the pin configuration to your other computer before you install.
If it is the right one, clean the pins, it’s been sitting on a shelf for years. You can re-grease after your troubleshooting is completed. V~