IHADAV8.com - Turbo Buick Tech, and Nonsense

Tech Area => General Buick Tech => Topic started by: aminga on May 04 2017, 07:02:20 PM

Title: Strange Scanmaster Readings
Post by: aminga on May 04 2017, 07:02:20 PM
I pulled the TR out of hibernation last week for a couple of cruise in's this past week.  curiously I was seeing some light KR at cruise with no load.  Intermittent 0.1 degrees.

Last night it got worse.  0-23degrees now I'm sure it's not real because 23degrees would be rattling like a can of marbles 

But also random readings on the AT, IAC,

And an intermittent MAL 25.  (That may be consistent with the AT bouncing around)

Hoping that reseating the powerlogger would help.  We shall see.

Seems like after that the next step is one of the 5V sources from the ECM. I think ATS and MAF are on the same feed.

 
Title: Re: Strange Scanmaster Readings
Post by: TexasT on May 04 2017, 07:47:50 PM
Did the motor mount settle and the downpipe"bump" something in its vicinity?
Title: Re: Strange Scanmaster Readings
Post by: daveismissing on May 05 2017, 11:46:10 AM
I guess you could log  the 5v rail to check it.
Title: Re: Strange Scanmaster Readings
Post by: aminga on May 05 2017, 03:55:29 PM
I guess you could log  the 5v rail to check it.

Not a half bad idea.  I guess if I get the right one. 

I don't think it's a real bump because it wouldn't go with the MAF, IAT and MAL randomly jumping around too
Title: Re: Strange Scanmaster Readings
Post by: aminga on May 29 2017, 04:58:30 PM
So I pulled the powerlogger off the board and cleaned the connections and all was right as rain.
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