MSefi.com read only forum (Jan.15,2018)

T3Bunny,

Thanks for the reply. I will look over the DB37 connection very closely. This problem is really kicking my butt. I returned the replacement DB card the the vendor for testing. They said there is no problem with the replacement card. When I plug my DB card into MS all indications appear ...

Matt, Yes I did purchase the daughter from DIYAutoTune and send an e-mail to websales on June 7,2012 concerning this issue. I have yet to get a responce. I will try again.

Matt,

I had previously reloaded the firmware prior to posting the MSQ this morning. Just to be sure I again reloaded the firmware without loading the MSQ and have the same indications.

Matt, The MSQ that you requested.

Matt, I ordered and received a new daughter board. I loaded the code and I now have an output to the injectors that varies with rpm but also have problems with the new daughter board. The MAP output as viewed on TS is max. I have no tps control and can not calibrate tps. IAT is a constant 170* F. I ...

Matt, I went back and again traced the signal. I made an error in my discription of the signal in an earlier post. When using the test lamp, the lamp glows brightly when connected to pins 21 & 22 but does not flash as seen on the injector pulse led. When I ground pins 21 & 22 as you recommended, I ...

Yes when grounding pins 21 and 22 on U1 I get an output on pins 5 and 7 of U4 respectively.

I may have found the problem. I built a test light per trouble shooting guide. I see an output on pins 21 & 22 of the CPU (U1). The signal appears FET driver U4 pins 2 & 4. I do not see an output signal on pins 5 & 7 of U4.

I also attached MSQ and Data log you requested.

CurrentTune.msq ...

Update - After reloading code to MS I have the following indications. All LED's on MS operate nomal. AFR as viewed on TS is non-responsive to input from stimulator. Pulse width gauge is erractic. No injector pulses indicated on JimStim LED's. Other functions such as fuel pump or fidle us to control ...

Matt, I need to edit the last post. After I posted last I was able to reload the .S19 file. Now I will test to see if that corrects the problem.

Matt, I do not get an error message. All I get is the downloader page. I can sellect for example the com port and I see the % download at the bottom of the page but nothing happens when I sellect the .S19 file.

Matt, I thought I had the problem solve but apparently not. I replaced the ignition switch which did correct the electrical issue. When trying to start the motor, I hear the fuel pump cycle and see the ignition pulses on the LED but no fire. I connected MS to JimStim. All indications viewed on ...

Matt, thanks for responding. I was able to determine the cause of the problem late yesterday afternoon. The cause of the problem was confusing to me because of the indications of both the volt meter and test light. They were resets due to a momentary loss of power to MS-II and felt like a misfire ...

I need some help trouble shooting a reset problem. I have MS-II v3 operating on 2.891 code. The MS-II was installed approximately 2 years ago and is controlling a GM v6 with HEI (small cap 8 pin module) ignition.

During this time I have experienced periodic misfires (resets) but they were seldom ...