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| '7730 ECM w/DIS Code 41 (Page 1/1) |
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lou_dias
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SEP 11, 05:18 PM
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Does anyone have experience with a CODE 41 using the '7730 ECM ?
I'm running DIS with the DR-145 ICM.
I've swapped the ICM multiple times, the ECM once, and the crank sensor.
I've checked continuity between the timing control output on pin 8 of the 32 pin ECM connector and the connector 3 pint B on the ICM and it checked good.
https://easyautodiagnostics...crank-sensor?start=1
I am at a loss. My next step is to reflash the EPROM. This is a possibility since it happened after I burned new code.
According to this list it could be a memcal error:
https://www.slideshare.net/...s-list-pdf/250729747[This message has been edited by lou_dias (edited 09-11-2024).]
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lou_dias
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SEP 18, 03:22 PM
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Update.
Ordered a new MEMCAL and adapter.
Per the Code 41 docs in the N1A$T definition, it seems this has to do with resistors that determine the fueling method not matching what's defined in my .bin file.
Nothing has changed, however there are some signs of rust on my adapter so I'm just ordering new parts.
Apparently the adapter is from Red Devil. My old one was from Moates.
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Daviero
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SEP 22, 08:41 PM
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I used a 7730 years ago to run my Northstar but after difficulties switched to a 1227165 ECM with a memcal replacement board from PCM Hacking from Australia. It’s a generation older ECM than the 7730 but with the RAM memory adaptor it is a more powerful setup. You can read and write directly to the ECM though the ALDL port, even running live, all just with TunerPro Live. Fuel and timing charts extend to 7500 rpm too so there no adder charts to deal with, and you can have it set up for 2 fuels, or two tunes, with the installation of a selector switch. Do a search on Pennocks here and you’ll find a few threads of its use. Hope you find this useful.
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Daviero - 88 N* 5spdGT[This message has been edited by Daviero (edited 09-22-2024).]
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lou_dias
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SEP 23, 11:13 AM
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Thanks for the info.
I will keep that in mind for future swaps.
Looking at my adapter, there's some build up on the pins. I think that may be causing the issue. I could probably just clean it. I probably bought all this hardware in 2009 so it's old...and getting crusty I guess.
Red Devil River didn't print a shipping label until last night. :/
I've had the spare memcal since last week now from a different ebay vendor.
I don't want to risk using this new memcal with the old adapter to avoid the old adapter causing an electrical issue with it.
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lou_dias
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SEP 25, 09:14 AM
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