Car running like crap after swapping ECM

[84wh1]

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Well, the new ECM is in, the calpack from the old ECM is in, the 87MAF is in, and the car runs like crap! I though maybee it was just low on gas since it sat all winter, so I put some more gas in, and it still ran like crap. I tried to put the 84MAF in the car again(Even though the chip I got burned was for 87ECM+ 87MAF) And it still runs like crap.
What it does, when the car is in park and I give it any gas, it starts to sputter. When I put it in gear, it does the same thing. If I give it gas VERY slowly, its not as bad. If I give it gas hard, it bogs extremly bad. If I let it idle for more than about one minute, it stalls on me. When I put it in gear after its warmed up, it stalls.

Any ideas?

-I also got the scanmaster hooked up, if that helps.

 

[FJM568]

First question is, "Did it do this before you did the swap???" If you did the swap to try to correct idling or some other problems, then it won't solve those problems...It wasn't meant to fix anything, just give you a greater availability of chip sources and chips and the ability to get more information from the ALDL port/ecm by using Scanmaster/TLink/Directscan...

Did you do the IAC reset procedure??? Try that first...Then check for vacuum leaks...

Let us know what you find out...

edit...
Unhook the Scanmaster and see if that helps...

 

[84wh1]

No, it did not do this before I swapped ECM. I swapped them so that I could use a scanmaster.

How do you reset the IAC?

Thankd for the advice

 

[BuickTV6]

IAC reset

Hey Marc. Heres the link to reset the IAC. http://www.gnttype.org/techarea/faq/IACreset.html
I found this pocedure to work pretyt good on my car, more of a steady idle.. I would also make sure the tps is adjusted corectly too just to be on the safe side. HTH Mark

 

[6pack]

I may be way off base here but it's just a thought..

Could be your fuel pump. I'm sure I am wrong, but like I said just a thought.

 

[84wh1]

The fuel pump is only a year old, so I dont think that its the pump.