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WhatsUpDOHC
09-03-2018, 08:54 AM
As you may have read in another post, The Marauder is down. It happened on Friday while driving home: lost all voltage and the car stalled. Installed a new alternator and new battery and still not getting any voltage from the alternator. Is there something that controls the output voltage from the alternator? We have measured it at the output lug with a meter and see no voltage.

Thanks!

Mark

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fastblackmerc
09-03-2018, 09:04 AM
You need a "4G" style alternator.

New or rebuilt alternator?

How are all the connections?
WhatsUpDOHC
09-03-2018, 10:23 AM
I've had 3 alternators in the car this weekend:

The first was the original- felt to be possibly going bad but test it out fine at my local Pep Boys (FLAPS).

Second is an alternator that I bought from Rodger Sims (MOTOWN) a couple of years ago - known to be used but still functioning.

The third is brand new purchased from Pep Boys.

The same symptom exists for all 3 - the battery is not getting charged my Scan Gauge showing ~11.3 volts.

Thanks!

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CBT
09-03-2018, 11:04 AM
How old is your serpentine belt. No slipping? I'm just running through all possibilities.

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CBT
09-03-2018, 11:05 AM
Any signs of corrosion in the relay box behind the battery?

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WhatsUpDOHC
09-03-2018, 11:06 AM
How old is your serpentine belt. No slipping? I'm just running through all possibilities.

Sent from my XT1650 using Tapatalk~30K miles. Doesn't appear to be slipping.

Thanks!

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martyo
09-03-2018, 11:07 AM
How proficient with tools and wiring are you?
WhatsUpDOHC
09-03-2018, 11:12 AM
How proficient with tools and wiring are you?I made a crane out of an Erector Set once.

J/K

I'm no Edd China but I've been around the block. Also, my brother is a Navy trained electrician and he's coming over.

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martyo
09-03-2018, 11:40 AM
I made a crane out of an Erector Set once.

J/K

I'm no Edd China but I've been around the block. Also, my brother is a Navy trained electrician and he's coming over.

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Take the PCM out of the equation.

The three pin connector on the alternator has a green wire with a red stripe. This wire needs to go to key on power. The other two are left alone.
WhatsUpDOHC
09-03-2018, 03:02 PM
Take the PCM out of the equation.

The three pin connector on the alternator has a green wire with a red stripe. This wire needs to go to key on power. The other two are left alone.Uncle. Taking it to the mechanic tomorrow.

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Turbov6Bryan
09-03-2018, 03:35 PM
If you're seeing no voltage at the alternator that means the big charge wire is broken. When trilogy made those kits The positive wire was cut in half and extended at the passenger side valve cover. walk your little fingers from the alternator to the battery and make sure that big cable isn't cut in half.

Seen it twice
WhatsUpDOHC
09-03-2018, 03:39 PM
If you're seeing no voltage at the alternator that means the big charge wire is broken. When trilogy made those kits The positive wire was cut in half and extended at the passenger side valve cover. walk your little fingers from the alternator to the battery and make sure that big cable isn't cut in half.

Seen it twiceThis isn't on the Trilogy car, it's my daily driver. We're not seeing voltage from the alternator lug.

Thanks!

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Spectragod
09-03-2018, 05:30 PM
Take the PCM out of the equation.



The three pin connector on the alternator has a green wire with a red stripe. This wire needs to go to key on power. The other two are left alone.



THIS, if you get voltage, then look for the broken wire (most likely) or the bad pcm.


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Turbov6Bryan
09-03-2018, 06:28 PM
This isn't on the Trilogy car, it's my daily driver. We're not seeing voltage from the alternator lug.

Thanks!

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Let us know where it's broken or if the diodes are bad!

Have fun :)
WhatsUpDOHC
09-11-2018, 04:07 PM
Ol' SB has been in the shop for a week.

The mechanic hasn't been able to find the problem - All three alternators are fine.......

He thinks that it's the computer.

So, this weekend I may be reaching out to the marauder peeps for some help.

And maybe a computer for sale.

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RF Overlord
09-11-2018, 05:50 PM
If your mechanic is at all electrically-literate, give him this link (http://www.idmsvcs.com/2vmod/alternator/mitsubishi/upgrade/index.html). Scroll down about half-way and you'll see the discussion of how the PCM-controlled alternator works. There's a bit to wade through, but it's worth it.
Zack
09-12-2018, 05:41 AM
Its real simple. One wire supplies battery power to the allternator. Another wire sends a signal to turn on. Its either 5V or 12, don't remember. The other wire is for the dash.

If it was me, I'd just borrow power from another source instead of replacing the computer.
Did he test the signal wire at the PCM yet?
musclemerc
09-12-2018, 12:42 PM
I hope the OP is aware the alt harness has fuse links installed.
martyo
09-12-2018, 12:49 PM
Its real simple. One wire supplies battery power to the allternator. Another wire sends a signal to turn on. Its either 5V or 12, don't remember. The other wire is for the dash.

If it was me, I'd just borrow power from another source instead of replacing the computer.
Did he test the signal wire at the PCM yet?

I offered that to him a week it so ago.

If he can’t do it he should show his mechanic.
WhatsUpDOHC
09-12-2018, 05:52 PM
Sorry for the lack of response. I really don't have the time to mess with the car during the week. I'll see what the weekend brings.

Also, I'm not a mechanic so I'm not familiar with some of the suggestions.

I appreciate all of the help!

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CBT
09-21-2018, 04:51 PM
So what was the outcome?

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WhatsUpDOHC
09-21-2018, 04:53 PM
So what was the outcome?

Sent from my XT1650 using TapatalkCar is still down. Taking it to the Ford dealership Monday. :-(

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CBT
09-21-2018, 05:14 PM
Car is still down. Taking it to the Ford dealership Monday. :-(

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I actually dread driving mine this weekend. It's at a friend's house, been there for about a month parked outside while I moved. The last POD was picked up Thursday so the driveway is clear, I can go get it now, but I'm not looking forward to it randomly shutting off, stumbling at idle, etc. etc. during the 20 mile trip.

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WhatsUpDOHC
09-21-2018, 05:28 PM
I actually dread driving mine this weekend. It's at a friend's house, been there for about a month parked outside while I moved. The last POD was picked up Thursday so the driveway is clear, I can go get it now, but I'm not looking forward to it randomly shutting off, stumbling at idle, etc. etc. during the 20 mile trip.

Sent from my XT1650 using TapatalkSorry to hear. I didn't know that you were having problems with the DBP.

I had a rough idle and throwing codes that was solved with Techron concentrated fuel injector cleaner. Whole bottle into a half tank and drove it for about a half hour. Cleared the miss and codes.

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Turbov6Bryan
09-21-2018, 05:45 PM
I am still screaming bad battery cable leading to the alternator

If it has no voltage it work

Use a set of jumper cables as temporary battery cables to diagnose
Turbov6Bryan
09-21-2018, 05:51 PM
Edit. The alt won't work if the main battery cable is not good

I fixed 100s of equipment at Katrina, 1000s annually for 20 years

Can you at least try it?
WhatsUpDOHC
09-21-2018, 06:44 PM
Edit. The alt won't work if the main battery cable is not good

I fixed 100s of equipment at Katrina, 1000s annually for 20 years

Can you at least try it?Thank you, Sir! I'll give it a shot tomorrow (this I can do).

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NorthShoreChiMM
09-22-2018, 06:12 AM
Edit. The alt won't work if the main battery cable is not good

I fixed 100s of equipment at Katrina, 1000s annually for 20 years

Can you at least try it?

Voltage drop all of the wires too and from the alternator. No more than .5v for +, no more than .2v for negative. Might as well do the big 3 upgrade if you find anything
WhatsUpDOHC
09-24-2018, 04:43 PM
I got called into work over the weekend so I never got a chance to try the suggestions. Took it to a Ford dealer this morning. Mechanic found that it was a break in the line from the PCM to the alternator. He rewired another one and I'm good to go! Thank you everyone for your suggestions and offers to help. Mark
Turbov6Bryan
09-24-2018, 06:47 PM
Good to hear its fixed.

When you said it had no voltage at the back of the alternator, that is why i said the cable was broken.

It had voltage, but just wasnt charging.

Very common for the wiring to break at the tops of the crash bar on these panthers. You might have more broken wiring in the near future.
BW
CBT
09-25-2018, 02:05 PM
Right on, man.

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justgod
09-25-2018, 02:30 PM
I hope the OP is aware the alt harness has fuse links installed.

That was my first thought.
It is interesting that he said We have measured it at the output lug with a meter and see no voltage. If he grounded the the voltage meter correctly, he would have read 11.xx Volts or somewhere thereabouts since it's a direct cable to the positive terminal on the battery, unless your fuselinks let the smoke out. :beer: