problems with Diacom and LT1

[OneSS2NV at aol.com]

In a message to the List, Shannen writes:

<< So I'd agree that a good test is to try and connect with another scantool. 
 And
 not another laptop running the same software, but something commercial and
 trusted by its owner.  If that test fails, begin with the factory service 
manual
 chart for "no aldl data."  You'll end up checking to make sure the serial 
data
 wire is connected, isn't shorted to ground or power, that the ecm will go 
into
 diagnostics & etc. >>

In relation to the original post-

<< Now, the ECM install is not OEM. It's an LT1 engine and ECM installed in a
60's Nova (I believe using an aftermarket harness). >>

   If the car is using an aftermarket harness, would you still be able to 
plug Diacom in and scan?  I've heard stories/rumors about not being able to 
communicate with some aftermarket harnesses (Painless Wiring Harnesses come 
to mind).

   When we did my TPI swap, we adapted a factory F-body engine harness to use 
in my Monte SS.  It was tougher than buying a premade harness, but I have 
full communication with everything from my cheapie AutoXRay all the way up to 
the SnapOn stuff.

   If he has no luck with the test procedure you stated, I'd suggest looking 
further into the harness itself.

     SSeeya,
        Steve Ragusa
         North Jersey
'85 Monte SS w/'87 LB9 TPI
   www.bowtiepower.com
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