ecm prom compatability

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Nov 6, 2013 | 08:49 PM
  #1  
need help figuring out if the prom is correct for the computer i have a 85 firebird with the 2.8 i have a 1226870 computer but it has a 16032500 prom
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Nov 7, 2013 | 08:33 AM
  #2  
Re: ecm prom compatability
There should be a 3 or 4 letter code on the PROM, what is it?

RBob.
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Nov 7, 2013 | 06:03 PM
  #3  
Re: ecm prom compatability
9845 thanks for your help
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Nov 7, 2013 | 08:04 PM
  #4  
Re: ecm prom compatability
There should be a 3 or 4 letter code on the PROM, what is it? If stock it is on the silver label.

RBob.
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Nov 7, 2013 | 08:05 PM
  #5  
Re: ecm prom compatability
frh thanks
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Nov 8, 2013 | 06:59 AM
  #6  
Re: ecm prom compatability
FRH is correct for an '85 Firebird with the 2.8l engine. It is FED emissions, with the 700R4 transmission (automatic), and manually controlled A/C system.

RBob.
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Nov 8, 2013 | 02:21 PM
  #7  
Re: ecm prom compatability
thanks for your help uh does would it be worth replacing the 6870 with the later model 7302
from rock auto
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Nov 8, 2013 | 02:48 PM
  #8  
Re: ecm prom compatability
The ECM won't come with a PROM and the '6870 PROM won't work in the '7302 ECM. I don't know if the '7302 ECM is any better, although it likely does has better firmware.

RBob.
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Nov 8, 2013 | 10:12 PM
  #9  
Re: ecm prom compatability
thanks for your help you helped alot
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