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silversnake
04-09-2018, 04:42 PM
Need some help on this plz. Started a few weeks ago. Dash light, headlights, radio, climate control all went haywire when accelerating past 3500 rpm. No loss in power and no codes. When I drive under normal conditions no issues. Ran a Datalog and noticed the bolts spike to 15.9 when issues occurs. Changed the alternator voltage regulator and same issue. I have videos but can’t upload them here


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Zack
04-09-2018, 06:09 PM
I’d start by replacing the battery
silversnake
04-09-2018, 06:24 PM
Recordings

https://drive.google.com/open?id=1J7M941rTv3fkDckuVDpnF E4ZswJINkw_

https://drive.google.com/open?id=1n2sevoouTmFowul9Mwww0 0khr8rh-Xz4


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silversnake
04-09-2018, 06:25 PM
I’d start by replacing the battery



Battery is a Optima (yellow) was replaced new about 4 months ago.


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Spectragod
04-10-2018, 07:40 AM
Battery is a Optima (yellow) was replaced new about 4 months ago.


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And the biggest mistake people make is thinking just like that, new parts can be bad. Have you tested the battery with a midtronics or similar tester?


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fastblackmerc
04-10-2018, 08:00 AM
Check all the positive & negative connections in the engine compartment.

They should be clean and tight.

As these cars get older you may need to take each one off and clean them with steel wool so they are nice and shiny. Make sure the contact area is clean too.
BAD MERC
04-10-2018, 04:01 PM
Say please...
justbob
04-10-2018, 04:11 PM
Say please...



Plz? [emoji848]


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Jtrip
04-10-2018, 04:54 PM
Plz? [emoji848]


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Sign of the times. In the future no one will speak in complete sentences. Takes too much time and effort.
silversnake
04-10-2018, 05:28 PM
Problem solved. Turned out to be a bad alternator. After the shop changed the voltage regulator & rectifier the problem still exists, so I swapped out a spare alternator and everything is back to normal.


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Turbov6Bryan
04-11-2018, 03:39 PM
Problem solved. Turned out to be a bad alternator. After the shop changed the voltage regulator & rectifier the problem still exists, so I swapped out a spare alternator and everything is back to normal.


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Good job

Baffles me how many people get bad rebuilt, bad reman, and bad brand new alternators on these cars

If anyone in the future runs across this, buy a used marauder alternator at

Www.car-part.com

I did last summer, works perfectly