Hi there,
I built about 4 different MS3 v3.0 boxes now and my latest one I am having an issue with the FP circuit. When I connect my JimStim I measure 3.3V on the FP output. I followed all the tests in the documentation. All good. I replaced every single component in the FP circuit and still the same result. I don't see anything wrong with the solder points. I just can't figure out what is wrong. Anybody got any thoughts on what could be wrong?
-Justus
Fuel Pump output on MS 3.0 board
Moderators: jsmcortina, muythaibxr
Fuel Pump output on MS 3.0 board
1980 Volvo 242 - MS3x - Holset HE351CW
1993 Volvo 940 - MS3x - Holset HE351CW
2006 Audi S4 - straight pipes - stock
1993 Volvo 940 - MS3x - Holset HE351CW
2006 Audi S4 - straight pipes - stock
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elutionsdesign
- Super MS/Extra'er
- Posts: 1341
- Joined: Mon Sep 05, 2011 1:20 pm
Re: Fuel Pump output on MS 3.0 board
Break out your ohm meter, you have to have continuity somewhere it doesn't belong. Maybe a leaky transistor?
Graduate of EFI University.
I build, repair, install and tune Megasquirt systems in North Dakota and beyond!
I build, repair, install and tune Megasquirt systems in North Dakota and beyond!