LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

What to do with computer when tranny is gone?

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Old 01-18-2005, 08:59 AM
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What to do with computer when tranny is gone?

My cousin is putting a 94 LT1 and wiring into a 92 S-10 pick-up for the tranny we'll be using a non electrical tranny behind it. What do I do with the computer , does it need to be fooled that the tranny is there? or do w just cover the plug and let it be?
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Old 01-18-2005, 07:04 PM
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Re: What to do with computer when tranny is gone?

The engine controlls are independent of the tranny, so it will work fine just not using it. I don't know if it will throw codes or not.
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Old 01-18-2005, 07:06 PM
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Re: What to do with computer when tranny is gone?

You need to have the PCM re programmed. When i did my T-56 swap i was putting out like 5 codes.
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Old 01-19-2005, 09:08 AM
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Re: What to do with computer when tranny is gone?

Did it operate normally though or did it goto limp home mode with the codes set?
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Old 01-19-2005, 11:01 AM
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Re: What to do with computer when tranny is gone?

It ran like crap. Idle was way low and it was setting codes. I think it is because i did all the mods in my sig at the same time with the T-56 conversion so the computer didnt know what was going on. I got a tune from Ion and it runs like a champ now.
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Old 01-19-2005, 01:52 PM
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Re: What to do with computer when tranny is gone?

Hey Perry, Talk to Mike (MIKES94Z/28) on COFBA... he had the same swap...
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Old 01-19-2005, 02:19 PM
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Re: What to do with computer when tranny is gone?

Originally Posted by 94FormulaFbird
Hey Perry, Talk to Mike (MIKES94Z/28) on COFBA... he had the same swap...

K thanks !! I'll drop him a line.
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Old 01-19-2005, 02:20 PM
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Re: What to do with computer when tranny is gone?

Oh yeah, Come home safe !!
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Old 01-19-2005, 02:20 PM
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Re: What to do with computer when tranny is gone?

Limp mode affects the tranny, but not the engine if I remember correctly.
It may be cheaper to buy a used pcm from an A4 car than to have it programmed. I've picked them up for $75.
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Old 01-19-2005, 02:23 PM
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Re: What to do with computer when tranny is gone?

Originally Posted by 94red
Limp mode affects the tranny, but not the engine if I remember correctly.
It may be cheaper to buy a used pcm from an A4 car than to have it programmed. I've picked them up for $75.
Do you mean from a standard car? Thats an idead as well, thoughts?
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Old 01-19-2005, 02:28 PM
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Re: What to do with computer when tranny is gone?

Its $60 for an unlimited email tune package. Cant beat that.
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Old 01-19-2005, 03:02 PM
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Re: What to do with computer when tranny is gone?

Who does that tune? By unlimited do you mean they will continue to make changes as long as you have the car?
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Old 01-19-2005, 03:04 PM
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Re: What to do with computer when tranny is gone?

Originally Posted by WS Sick
Do you mean from a standard car? Thats an idead as well, thoughts?
Ya, that's what I meant. sheeesh!
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Old 01-19-2005, 03:26 PM
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Re: What to do with computer when tranny is gone?

Yeah, it will run fine but, just throw codes (check engine light). If you don't have the check engine light where you can see it I wouldn't worry about doing anything.
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Old 01-19-2005, 05:57 PM
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Re: What to do with computer when tranny is gone?

Just cover the plug. If your going to a Non electric trany liek a TH 350, there is nothing to really do. Swapping to an M6 trans will mean you have to change things due to the tables being different. If it's a standard vaccum control trans, don't even bother with the program unless you don't want to see an SES light, which I doubt you will even have in an S10 swap

-Shannon
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