AEM logs and injector pulse widths

[rpslaughter1982]

I just want to run an idea past AEM users:

 

If you had some dodgey connectors on your injectors and infrequently the signal didn't get to the injector, then it wouldn't open and the cyclinder would get less/ no fuel.

This would show the afr's to go lean for a bit.

 

To test the problem, if you ran a log on the aem with the injector pulse widths, would it show an injector not opening?

 

Does the log get the pulse width from what signal the aem is sending the injectors or does it actualy measure how long the injectors are open by the electrical circuit itself?

 

I guess the plugs might tell a story but just wondering if i could log the injector parameters as a process of elimination.

 

many thanks for any help

[Ryan.G]

 

To test the problem, if you ran a log on the aem with the injector pulse widths, would it show an injector not opening?

 

No, the aem sends out the signal to the injector and this is what is logged.

 

With regards your problem which i have been asked about already i would suggest putting on a new map again before the problem occured.

 

I have encounted a similar issue and it was a corruption in the checksums of the map.

 

Ryan

[Ryan.G]

Then if that does not work. Pop an Oscilloscope on each injector outputs and make sure that it is not missing a sync when you problem occurs.

 

Same with the Ignition outputs after

 

Ryan

[Muffleman]

Just walked through the door after best part of a week away, but whilst away I did think about your car Rich and have a few more ideas. I have a supercharged Marcos to help map tomorrow but then I want to get your car done.

i would suggest putting on a new map again before the problem occured.

Will give that a try too mate Have already run the oscilloscope across the cam sensors and injectors.