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AEM Problems with everything AEM

Old 10-27-13, 01:22 PM
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Exclamation Problems with everything AEM

Got the AEM EMS v1 and it says my ECU is offline all the time.

Can't install the AEM Serial Datastream gauge becaue it always says theres an unknown error.

This is with my new Windows 8.1 laptop. The gauge software installed perfectly fine on my Windows 7 desktop.

Anyone can help me out here?
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Old 10-27-13, 03:19 PM
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AEMTuner v3.2 Build 08/05/2013 (**UPDATED 2013-08-05**). This might help, I'm sure Cody will chime in soon too.
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Old 10-28-13, 10:39 AM
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Originally Posted by ryan1 View Post
AEMTuner v3.2 Build 08/05/2013 (**UPDATED 2013-08-05**). This might help, I'm sure Cody will chime in soon too.
This is the software for the Series II ECUs. This is not a supported application for the Series I but it does work with limited functions. There are some tables that are not available in the Series I ECU and they will show "Not Available" in the Series II Software. You will also not have access to any of the wizards in the Series II software. Also O2 Gain which is critical when calibrating the O2 is not available in Series II. This will not necessarily fix a connection issue.

Originally Posted by 2RotorsNaDream View Post
Got the AEM EMS v1 and it says my ECU is offline all the time.
A lot of things can be wrong. Wrong COMMs setup, USB instead of serial or the wrong serial port selected, No power or ground to the ECU. If you are trying to use a USB to serial adapter you may be having issues with that. What type of data cable are you trying to use? Also, AEMPro is not windows 8 supported. only the later versions of the Series II software is. which has limited functions for Series I ecus.

Can't install the AEM Serial Datastream gauge becaue it always says theres an unknown error.
What do you mean by install? setting up the Serial Telemetry in AEMPro and then the data in AEM ProGauge are separate things. The only way you may get this error is when trying to connect the gauge to the laptop. If you are having Serial comms issues with AEMPro Serial gauge will definitely not work. Also, Windows 8 in not supported for AEM ProGauge.

This is with my new Windows 8.1 laptop. The gauge software installed perfectly fine on my Windows 7 desktop.

Anyone can help me out here?
I think you answer is Windows 8 is not supported....

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Old 11-02-13, 03:16 PM
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Well then I might have an AEM EMS v1 and Datastream for sale in a few days. This sucks since I didn't even get to use it. Should've just went Adaptronic or stayed PFC like everyone told me.
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Old 11-03-13, 05:15 PM
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When you are dealing with ECUs that are 10yrs old you will have to deal with software and data comms of the same era. That is one of the best ecus of its time.

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Old 11-03-13, 08:37 PM
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I tried to use an older Windows XP laptop with the ECU instead and it still never connects, all it ever says is that its offline. Googled it and it seems connection issues with the ECU are extremely common. Any idea why this is happening? I'm using a FTDI Serial to USB adapter wire that everyone on the AEM and other forums wrote works with the ECU and all the drivers are installed and working properly. I have the conection port as serial and chose the correct COM port.
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Old 11-04-13, 10:09 AM
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Originally Posted by 2RotorsNaDream View Post
I tried to use an older Windows XP laptop with the ECU instead and it still never connects, all it ever says is that its offline. Googled it and it seems connection issues with the ECU are extremely common. Any idea why this is happening? I'm using a FTDI Serial to USB adapter wire that everyone on the AEM and other forums wrote works with the ECU and all the drivers are installed and working properly. I have the conection port as serial and chose the correct COM port.

I have never had any comms issues with any of the Series I AEMs I have worked with. Originally when I tried using a serial to usb adapter I had issues but it was with the adapter and the laptop not the ECU. I got an older laptop with direct RS232 connection and have not had any issues.

Are you sure the ECU is powered up? If you are able to see the comms come up in the device manager, You know which COM port you are on, and you are able to select that COM port in the AEMPro drop down menu then you should be good to go. Sometimes PCs assign really high COM ports, like > 16. The AEM does not count that high and you will need to reassign the name of the COM port. If everything is correct you may have issues with the ECU powering up. Does the car run in the ECU? Can you confirm that it is powering up?

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Old 11-04-13, 06:33 PM
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Whenever I Try To Start The Car All It Does Is Make A Weird Buzzing Noise And Nothing Else. When I Use A Chipped Stock Ecu The Car Cranks Up And Fires. Don't Know What To Check To See If The Ecu Is Powered Up.
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Old 11-04-13, 06:42 PM
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Most likely there is something wrong with the ECU and it needs to get sent in for repairs. Has the car had any electrical issues? like blowing fuses or intermittent operation? Maybe the ECU was dropped.. you need to call (310)484-2322 ex 1 then 2. That is for tech support. You can tell them your issue and say you want to send the ECU in for inspection.

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Old 11-04-13, 07:21 PM
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The car is having an odd problem with certain lights not working but no fuses blowing or anything.

I bought it off of a trusted member on the boards who told me it was working 100% before I paid for it. He has great feedback here so I have no reason to doubt it.

Reading up online it seems that intermittent connections are a very common problem with this ECU.
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Old 11-05-13, 10:15 AM
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Originally Posted by 2RotorsNaDream View Post
I bought it off of a trusted member on the boards who told me it was working 100% before I paid for it. He has great feedback here so I have no reason to doubt it.

Reading up online it seems that intermittent connections are a very common problem with this ECU.
Intermittent comms problems mean they come and go. You apparently have never been able to get it working. All of the issues I have ever had have never been anything related to the ECU. Faulty RS232 cables or USB to Serial errors.

When you turn the key on do you hear the fuel pump run?

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Old 12-17-13, 01:19 AM
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Originally Posted by 2RotorsNaDream View Post
I tried to use an older Windows XP laptop with the ECU instead and it still never connects, all it ever says is that its offline. Googled it and it seems connection issues with the ECU are extremely common. Any idea why this is happening? I'm using a FTDI Serial to USB adapter wire that everyone on the AEM and other forums wrote works with the ECU and all the drivers are installed and working properly. I have the conection port as serial and chose the correct COM port.
I get the "Offline" issue when ever I work in AEM Pro offline and then try to connect to the AEM after. I always have to reboot then connect. Kinda annoying but not that big of a deal. I have heard that this is not an issue when a serial to serial connections is used. I am using a USB to Serial adapter with Windows 7.
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Old 12-25-13, 06:44 PM
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NY

Originally Posted by Neutron View Post
I get the "Offline" issue when ever I work in AEM Pro offline and then try to connect to the AEM after. I always have to reboot then connect. Kinda annoying but not that big of a deal. I have heard that this is not an issue when a serial to serial connections is used. I am using a USB to Serial adapter with Windows 7.
i gave 2rotorsNadream my aem to troubleshoot his car the car cranks but still doesn't recognize either edu.
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Old 01-10-14, 01:42 PM
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Old 01-12-14, 08:54 PM
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AEM sucks! I give up. Now I have two EMS v1s, a USB to serial adapter, AND I bought a laptop with serial port specifically to get ecu you work. Even with the laptop connected to the serial port it still shows ecu offline.
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Old 01-12-14, 10:57 PM
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You're not the only person to have trouble connecting to a Series1 EMS. The newer AEM Series2 ECU's use USB which is much more compatible with today's laptops, but the RX-7 units didn't sell well enough so AEM never built a Series2 EMS for our cars.


Here's an excerpt from the AEM forum:
As you all know, it's not exactly easy to find a laptop with a serial port. Your next option is to use a USB to serial adapter. There are few brands out there that many users have had success with, but that doesn't mean it will work for everyone. Try at your own risk. I/O Gear and Radio Shack adapters usually have good results. The USB to serial adapter will come with a disk, you will need to install the driver onto your laptop for it to recognize the adapter. Once you have installed a driver for your adapter, you will need to setup your AEMPro.

In AEMPro, go to ECU > Connection Port > make sure you have 'Serial' selected for the connection port, even if you're using a USB to serial adapter. DO NOT SELECT USB BECAUSE THAT FUNCTION DOES NOT WORK!!! You should be able to see the com port with your adapter connected. You should be able to connect to the EMS using a USB to serial adapter now. Remember the EMS must be powered on (ignition key in the ON position, not ACC) to connect to the laptop.

If you still have trouble, try opening the Device Manager in windows and modifying the USB-serial COM port settings. There are two slider bars that can be adjusted for speed or reliability... adjust them a few steps closer to reliability and see if that helps.

If you're running Windows7, you might need to run AEMPro in some sort of compatibility mode. I've got an old WindowsXP laptop with a serial port... connects to the ECU just fine.
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Old 01-13-14, 12:22 PM
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Mine runs on windows 7 with no issues using a belkin usb serial adaptor.
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Old 01-13-14, 03:20 PM
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I'm not using a new laptop with a USB adapter anymore, it won't even connect to this old Windows xp laptop with a serial port that I'm using. And this is 2 separate ecus I'm using.
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Old 01-13-14, 04:02 PM
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Has jazzy ever been able to connect to his aem? Does jazzy's car run.
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Old 01-14-14, 11:58 AM
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Originally Posted by ryan1 View Post
Has jazzy ever been able to connect to his aem? Does jazzy's car run.
His was sent back to AEM, got the updates, and confirmed working.
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Old 01-14-14, 12:29 PM
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Have you tried different serial cables? If you have 2 ecus and 2 laptops it has to be something you are doing. You said it has a buzzing noise when the key is on. Can you tell where the buzzing is coming from, most likely the omp. If it is the omp, that confirms the ecu is working.
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Old 01-14-14, 08:12 PM
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I don't understand what it can be that I'm doing. Its a PnP ECU and all you should have to do is plug one side of a serial cable into the laptop and one side of the same serial cable to the ECU. It still doesn't connect and its killing me. And AEM tech support is a joke, they have never answered the phone or the countless messages I've left them.
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Old 01-14-14, 08:37 PM
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When you open up aemtuner and select usb does anything show up in the list?
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Old 01-14-14, 08:45 PM
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I'm using a serial port. I bought an old *** laptop and it has a serial port.
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Old 01-14-14, 08:59 PM
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Have you tried a different serial cable?
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