random skip/misfire
Moderators: jsmcortina, muythaibxr
random skip/misfire
I finally got my 383 up an running on ms1 3.0. I have a a random misfire, its like the computer just loses tach signal or something. the ms1 is running the timing and injectors. i have attached the data log, could someone just take a look at it and tell me if it is possibly a noise problem or if the computer is just some how losing power. I dont really have the skills of looking at the datalog yet.
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- Super MS/Extra'er
- Posts: 4122
- Joined: Fri May 07, 2004 3:33 am
- Location: Australia
Re: random skip/misfire
You are getting resets. http://www.msextra.com/doc/ms1extra/MS_ ... htm#resets and http://msextra.com/doc/general/grounding.html
Find the Manuals up top under Quick links: Manuals.
Cheers Luke
Cheers Luke
Re: random skip/misfire
thank you for the speedy response, after looking at the proper grounding for the motor i believe that is my issue. right now i just have my motor grounding to the frame. ill run another wire grounding it directly to the battery.
Re: random skip/misfire
so last night i ran a ground wire from the motor to the battery in the bed of the truck. I fired the truck up and turn on the trigger logger and the random miss fire was still there. I notcied that ms was shutting off for a split second and then turning back on. After checking all the relays and thinking they were bad, I noticed that the alternator was acting kind of funny and taking a while sometimes to start charging and then not even cranking a good amount of volts. I decided to just disconect the alt to see what happened, as soon as i fired it up the truck sounded the best it has yet with no mis fire, running smooth. Im going to grab a new alternator in the next couple days but my assumption is that it is bad and shorting out and back feeding the system some how.