been messing with this for weeks. got a new ems-pro replacement and still reads 4v at key on. ran all the grounds to the bat and bat is grounded to frame and engine. i pulled the o2 pink wire out of the loom so it not touching any other wires and still reads 4v. when i test the o2 sending wire -.01 volts.
please anyone have any ideas??
o2 reading 4.04 volts! help!!!
Moderators: jsmcortina, muythaibxr
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turbo_boat
- MS/Extra Newbie
- Posts: 11
- Joined: Sat Jul 04, 2015 4:55 am
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turbo_boat
- MS/Extra Newbie
- Posts: 11
- Joined: Sat Jul 04, 2015 4:55 am
Re: o2 reading 4.04 volts! help!!!
narrow band
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ihateforums
- Helpful MS/Extra'er
- Posts: 35
- Joined: Sun Jan 27, 2013 1:38 pm
Re: o2 reading 4.04 volts! help!!!
Which PCB do you have? If it is the 2.2 board then check resistor values and solder joints for R1 (1K) and R29 (1M)
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Matt Cramer
- Super MS/Extra'er
- Posts: 17507
- Joined: Thu Apr 16, 2009 8:08 pm
Re: o2 reading 4.04 volts! help!!!
eMS-Pros are their own main board. Normally they are supported by EFI Source as they are the ones with the rights to it after they bought the rights from Spectre, although we provide support for a handful that were sold through us.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
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turbo_boat
- MS/Extra Newbie
- Posts: 11
- Joined: Sat Jul 04, 2015 4:55 am
Re: o2 reading 4.04 volts! help!!!
went with Innovate 3844 MTX-L and with the setting changes and afr gauge in TS. it works...
still no idea why the narrow wouldn't work!
still no idea why the narrow wouldn't work!