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AXYD Bin copied from memcal
$8D definition File
Tunerpro RT with moates hardware to copy the memcal
83 Z28 with 87 305 TPI converted to the 90-92 Speed Density 1227730 ECM
I am new to the tuning/ programming of the memcals, and have been reading every article I can find about this. Primary goal is to adjust cooling fan on/off temps and turn off the VATS.
I copied the memcal and created the bin with tunerpro rt and while looking through the data I found the Fan On/Off Coolant Temp Threshold table.
The values were rather odd to me, understanding they are shown in Celsius. Is there a special chart to convert to Fahrenheit ? If not the Fan 151.25 and Off 151.75 converts to 304.25 degrees and that does not seem right, or am I missing something?
83 Z28 with 87 305 TPI converted to the 90-92 Speed Density 1227730 ECM
If not the Fan 151.25 and Off 151.75 converts to 304.25 degrees and that does not seem right, or am I missing something?
Yes, you are missing the fact that in the f-bodys only one fan is ECM controlled. The other fan is A/C pressure and head temperature switch controlled. This can be changed with the addition of one wire at the ECM (splice into a wire and use a terminal to connect it to another ECM pin).
Yes, you are missing the fact that in the f-bodys only one fan is ECM controlled. The other fan is A/C pressure and head temperature switch controlled. This can be changed with the addition of one wire at the ECM (splice into a wire and use a terminal to connect it to another ECM pin).
The A/C compressor for the engine was seized up and numerous A/C parts were missing when I got the engine from the salvage yard. During the install, I read a DYI article on how to eliminate the A/C from the car, which I did using an no A/C cover on the firewall for the heater core and an A/C delete pulley. Thus eliminating all the A/C from the car.
In addition, the article gave details for the cooling fan relays which was to ground D12 (Fan Signal Request) from the ECM and jumper E8 (Primary Cooling Fan Control) to both of the cooling fan relays “F”. I did install a inline fuse for each of the cooling fans, as extra protection for the fans.
When I initially ordered the Memcal, I stated the car had no A/C and the dealership told me that it would be programmed in. Granted, I have had the Memcal for several years and I am now nearing completion of the project. I totally forgot about the secondary fan being controlled by the A/C. but I thought that was addressed in the programming.
Now that I am just starting to dabble into reprogramming the Memcal, should I turn off the FLAG: N.O. Fan Request Input Set in the Bin since the A/C is gone? Is the grounding the D12 the one wire that was mentioned or did the DYI article lead me wrong?
Please bear with me, the wire harness I bought was after market without the A/C. I figured that all the A/C deletion was taken care of with the wiring harness, memcal and the cooling fan wiring change. I more then likely have the sensor in place but not wired up. Where is this located and what do I do with it to have my fans properly operate?
I wired the cooling fans per the drawing below:
This was according to the article I read, which I am still looking for my copy of to post. I downloaded a copy of the Anht_hac to look at. I found in the anht_hac that the degrees is calculated as (Degrees C+40) * (256/192). Using this instead of the online converter the temperatures look ok to me, other then the 255 values for Fan and Off.
Fan 151.25 = 255
Off 151.25 - 255
1 107.75 = 197
Fan 104.75 = 193
I plan on changing the On to around 220 and the Off to 180
Do I make the 1 and Fan to the same values?
I'll have to look into the A/C pressure issue if the wiring of the fans or the grounding of d12 is not going to work.
Also is there a way to export the bin data to the format of the anht_hac instead of to a text file that does not show the hex locations and other information. Want to thank everyone for all the help!
Please bear with me, the wire harness I bought was after market without the A/C. I figured that all the A/C deletion was taken care of with the wiring harness, memcal and the cooling fan wiring change. I more then likely have the sensor in place but not wired up. Where is this located and what do I do with it to have my fans properly operate?
I wired the cooling fans per the drawing below:
This was according to the article I read, which I am still looking for my copy of to post. I downloaded a copy of the Anht_hac to look at. I found in the anht_hac that the degrees is calculated as (Degrees C+40) * (256/192). Using this instead of the online converter the temperatures look ok to me, other then the 255 values for Fan and Off.
Fan 151.25 = 255
Off 151.25 - 255
1 107.75 = 197
Fan 104.75 = 193
I plan on changing the On to around 220 and the Off to 180
Do I make the 1 and Fan to the same values?
One output so it doesn't matter .
I'll have to look into the A/C pressure issue if the wiring of the fans or the grounding of d12 is not going to work.
Also is there a way to export the bin data to the format of the anht_hac instead of to a text file that does not show the hex locations and other information. Want to thank everyone for all the help!
The hac is code dissembling, if you need to know the addressing you can look at differences or click on the items property in tuner pro.
I am going to move the cooling fan issue over into the Cooling forum since that seems like the right place for it. Want to thank everyone for the great help, did not realize I had a problem with the cooling fans.
As for the prom burning, I did some calculations and figured out my proposed Fan On/Off Temp Thresholds for when I burn the new chip.
Fan 117.50 (210 F)
Off 95 (180 F)
1 117.50 (210 F)
Fan 95 (180 F)
I have a 180 degree thermostat in now, so do these look right? I have the On higher then the Off temps for Fan and Off, but not sure with the 1 and Fan. The old values were 1 was higher then Fan. Thanks again!
02-04-2017, 11:38 AM
