Random SecL resets (datalog MSQ attached)

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jsdevel
Experienced MS/Extra'er
Posts: 318
Joined: Mon May 23, 2016 3:41 pm
Location: Phoenix, AZ

Random SecL resets (datalog MSQ attached)

Post by jsdevel »

Hi all,

I'm out of ideas as to why I'm getting random SecL resets, and I'd appreciate a fresh set of eyes.

Is there anything in the datalog that looks out of place?

Thanks in advance.
Last edited by jsdevel on Mon Sep 25, 2017 9:42 am, edited 1 time in total.
Matt Cramer
Super MS/Extra'er
Posts: 17499
Joined: Thu Apr 16, 2009 8:08 pm

Re: Random SecL resets (datalog MSQ attached)

Post by Matt Cramer »

Which MS variant is this, and where is it grounded?
Matt Cramer -1966 Dodge Dart slant six running on MS3X
jsdevel
Experienced MS/Extra'er
Posts: 318
Joined: Mon May 23, 2016 3:41 pm
Location: Phoenix, AZ

Re: Random SecL resets (datalog MSQ attached)

Post by jsdevel »

Matt Cramer wrote:Which MS variant is this, and where is it grounded?
MS2. Grounded at the intake manifold.
Matt Cramer
Super MS/Extra'er
Posts: 17499
Joined: Thu Apr 16, 2009 8:08 pm

Re: Random SecL resets (datalog MSQ attached)

Post by Matt Cramer »

Try grounding to the battery.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
jsdevel
Experienced MS/Extra'er
Posts: 318
Joined: Mon May 23, 2016 3:41 pm
Location: Phoenix, AZ

Re: Random SecL resets (datalog MSQ attached)

Post by jsdevel »

Grounding my ECU & O2 sensor directly at the battery hasn't helped my reset issue. I believe I can rule out grounding for the issues I've been having at this point. Ran new 2 AWG wire from battery to block, 4 AWG from battery to frame, new 2 AWG power cable from battery to starter, dedicated 10 AWG ground lines from MS2 to battery and O2 sensor to battery. Used hydraulic lug crimpers. Terminals are all tight. ECU & O2 sensor power feeds and grounds are directly at the battery terminals.

Here's a new thread based on my new theory: Invalid Closed Loop Idle Settings. Any help is appreciated.
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