ECU Issues
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
ECU Issues
My car has been running fine and when I went to restart the engine the fuel pump and injectors were running all the time the power is on. This same thing is happening when using the stim to power the ECU. Also, none of the pots on the stim are working while using TS. I have MS2, v3, 2.886. This has never happend before.
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Bernard Fife
- Master Squirter
- Posts: 475
- Joined: Thu Oct 29, 2009 12:54 pm
Re: ECU Issues
RB,
I would start with the troubleshooting steps here: http://www.megamanual.com/ms2/V3trouble.htm
Lance.
I would start with the troubleshooting steps here: http://www.megamanual.com/ms2/V3trouble.htm
Lance.
"Never wrestle with pigs. You both get dirty and the pig likes it.” - George Bernard Shaw
Re: ECU Issues
I have gone over all of the V3 trouble shooting and I don't see anything about the RPM and Injectors running all the time. I have washed all of the componets on both the ECU and the stim with alcohol and dried everything with no change. This ECU has been running fine for about 3 years and just changed after I had it running and then went to start it again about 5 min. later. Very strange! I was trying to get the new bluetooth working when all this happened. Using the serial cable, it connects fine and seems to send info back and forth, except for the stim pots. It seems like I need a PRO to look at the thing?
Re: ECU Issues
Also, the ECU runs the pump and injectors all the time with it in the car or on the stim without the laptop connected.
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Bernard Fife
- Master Squirter
- Posts: 475
- Joined: Thu Oct 29, 2009 12:54 pm
Re: ECU Issues
RB,
The injectors MUST be wired so that they have no power when the main relay (that supplies power to MegaSquirt) is off. That's because the drivers can be left in an 'ON' state when MegaSquirt is powered down.
If the MegaSquirt isn't getting power properly (if D19 is fried, for example) to power on, then the injectors could be powered even though the controller is not working.
However, if the serial comms are working (which you didn't mention earlier), then the processor is working. I suspect the attempted bluetooth connection has scrambled the code and/or settings. If this was mine, I would reload the code, and the MSQ (if it is 'known good'). Then I would do my bluetooth setup on a stim, not in the car, until it has proven to work consistently well.
Lance.
The injectors MUST be wired so that they have no power when the main relay (that supplies power to MegaSquirt) is off. That's because the drivers can be left in an 'ON' state when MegaSquirt is powered down.
If the MegaSquirt isn't getting power properly (if D19 is fried, for example) to power on, then the injectors could be powered even though the controller is not working.
However, if the serial comms are working (which you didn't mention earlier), then the processor is working. I suspect the attempted bluetooth connection has scrambled the code and/or settings. If this was mine, I would reload the code, and the MSQ (if it is 'known good'). Then I would do my bluetooth setup on a stim, not in the car, until it has proven to work consistently well.
Lance.
"Never wrestle with pigs. You both get dirty and the pig likes it.” - George Bernard Shaw
Re: ECU Issues
Thanks Lance,
I will proceed with your advice.
Bob
I will proceed with your advice.
Bob