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Old 03-31-2010, 10:55 PM
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Keller Keller is offline
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Exclamation Re: 85 GN Will not set DTC's but flashes code 12

First, WINALDL is somewhat of an odd piece of software. More importantly, the 84/85 ECM is an even odder piece of equipment.

There are many reasons a TR might bog: fuel delivery, ignition issues, etc. Anything from a clogged fuel filter, to a weak fuel pump, to a messed up ignition system, to a failing alternator...any of these might cause the issues you describe and never set a trouble code.

Now, the data you collect might tell a story, and help you determine the cause of the issue. Do the WOT MAF numbers look low? Do the O2 numbers at WOT numbers look low? Lots of knock retard?

The ECM can fail on these cars, but not often. I'd want to take a look at the hard data and not the codes (or lack thereof) before calling the ECM bad.
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