are 2003 and 2004 Marauder alternators the same? Interchangable?

[MarauderPU]

I am looking for a 175-200 amp alternator. It seems like there are a lot more choices for the 2004 Marauder verses the 2003 in terms of high output units Is there a difference in the two?
Can a 2004 Alternator be used on a 2003? Is the connection the same?

Thanks again for the help

Buck

[Turbov6Bryan]

It is the exact same part

[MarauderPU]

I thought so but thanks for the confirmation. I was wondering why many of the sellers (such as Rock Auto) list different availability for the 2004 vs 2003.

[Turbov6Bryan]

Same part. No idea

[sailsmen]

The 2004 is a year newer and the 2003 is a year older.

[GoldPanther]

Hello.
I am looking to purchase a new alternator because my current is making noises.
Rockauto has some listed there but they are listed to fit crown Victoria and grand marquis as well. How is this possible? I thought the marauder alternator was different from the others.
Can someone confirms if they are interchangeable or if it's safe to purchase?

[Mr. Man]

The MM uses a 4G regulator and has a clutched pulley. I would imagine a CV or GM alt would fit in the space, but it is not an interchangable part.

[Turbov6Bryan]

If you didnt know, some say the grand marquis one with the clutch like the marauder is the same and will work. Me personally, i have a fleet of marauders and when one craps out i buy a used one from www.car-part.com .... I buy used marauder ones for about 50 bucks , here is one at LKQ for 60 shipped... https://www.ebay.com/itm/2003-Mercury-Marauder-Alternator-OEM-105K-Miles-LKQ-241552055/193311974160?fits=Model%3AMara uder%7CMake%3AMercury&hash=item2d024aa310%3Ag%3Ad68A AOSwD5teKPu9&LH_ItemCondition=4

[GoldPanther]

Thanks guys.

[offroadkarter]

The MM uses a 4G regulator and has a clutched pulley. I would imagine a CV or GM alt would fit in the space, but it is not an interchangable part.


It absolutely is an interchangeable part, I've been running an alternator off a 2004 sport on my 03 Marauder for the past 20,000 miles now.

[GoldPanther]

It absolutely is an interchangeable part, I've been running an alternator off a 2004 sport on my 03 Marauder for the past 20,000 miles now.
Wow thanks for confirming.

[Mr. Man]

It absolutely is an interchangeable part, I've been running an alternator off a 2004 sport on my 03 Marauder for the past 20,000 miles now.
Does the Sport use a 4G alt? You are the only person I've seen post such a thing.

[justbob]

It absolutely is an interchangeable part, I've been running an alternator off a 2004 sport on my 03 Marauder for the past 20,000 miles now.

Hey Ryan, have you checked if the dash light has been removed or isn’t blown? All I’ve ever read is it may work but the light won’t shut off?


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[MyBlackBeasts]

I was told by Ford that Marauder regulator is Marauder specific, using a CV or GM alt may work but will give troubles.

Maybe someone else can post up if Ford told me right or wrong.

Good luck OP!

[musclemerc]

The difference is the clutched pully.
On the MM at WOT the PCM shuts the alternator off to gain a few ponies. (Less drag)
The CV alternator wont have this feature.

[offroadkarter]

Hey Ryan, have you checked if the dash light has been removed or isn’t blown? All I’ve ever read is it may work but the light won’t shut off?


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I promise my battery light does work and its not illuminated. I was having problems with reman alternators (from fords) where when the car went under load, voltage would tank to mid 12 volts. At cruise or even WOT it'd be fine. After 2 reman alternators with this problem, I threw on a 78,000 mile OEM 4G alternator from my friends totaled 04 sport and it completely fixed my problem.

Just to add to that, my friend who gave me the alternator had it on his trilogy marauder briefly with no charging issues either, I also know the battery light worked in that car because it was flickering on/off due to a pigtail issue a year prior.



The difference is the clutched pully.
On the MM at WOT the PCM shuts the alternator off to gain a few ponies. (Less drag)
The CV alternator wont have this feature.

The clutch can easily be swapped (which I did) and both alternators are PCM controlled, so why would the civilian vics lack this feature?

I'm also pretty sure some tuners disabled that feature, at least I remember Lidio saying he did so voltage would stay more consistent especially on trilogy cars.

[Turbov6Bryan]

I call bullsheep. The Vic alt won’t work, many people buy a Vic alt and it won’t charge... there have been wayyyy too many posts about it. Been a lot of folks handed a 4g Vic one by the parts store and they don’t work.
I am not discrediting anyone, but I really don’t feel like arguing when I’ve seen it in person.
plus the brush packs are completely different colors, making me believe one is pwm and the Vic being 5 volts reference

[musclemerc]

The clutch can easily be swapped (which I did) and both alternators are PCM controlled, so why would the civilian vics lack this feature?

I'm also pretty sure some tuners disabled that feature, at least I remember Lidio saying he did so voltage would stay more consistent especially on trilogy cars.


MM is the only panther with this feature from the factory.

BTW: I didn't run a clutched pulley with either my Trilogy or my current TVS (Because you can't)

[GoldPanther]

I think the police interceptor also has the clutched pulley I think.
Now it sucks and I dont know what to buy lol.
I think I'll just have this rebuilt.

[offroadkarter]

I call bullsheep. The Vic alt won’t work, many people buy a Vic alt and it won’t charge... there have been wayyyy too many posts about it. Been a lot of folks handed a 4g Vic one by the parts store and they don’t work.
I am not discrediting anyone, but I really don’t feel like arguing when I’ve seen it in person.
plus the brush packs are completely different colors, making me believe one is pwm and the Vic being 5 volts reference

Running a 98 - 02 (may) be a problem, I've never tried it. People on this site also swear up and down that you can't get "Marauder specific" shocks from Ford anymore which is also absolute ********. If I've learned one thing from being on this site so many years its to do your own research and verify your findings.

Also it wasn't the brush pack that had a color difference, it was the regulator. Again, I can't speak for the 2002 and older model year cars, but the 03+ panthers all have PCM controlled regulators. This is right from the Ford wiring & electrical troubleshooting service manual for MY 2005


The PCM determines the optimal voltage setpoint for the charging system and communicates this information to the voltage regulator. It has two unidirectional communication lines between the PCM and the generator/regulator. Lines are pulse-width modulated. (GEN COM) line communicates the desired setpoint from the PCM to the voltage regulator and the generator monitor (GEN MON) line communicates the generator load and error conditions to the PCM. The third pin on the voltage regulator, the A circuit pin, is a dedicated battery voltage sense line.

I promise you I have absolutely nothing to gain going on MM.net and telling people I'm running a crown vic alternator just for fun. It took me months to rectify that very annoying voltage drop issue, I ended up buying a used marauder alternator off ebay which turned out to be absolute junk. That was alt # 3 after the two remans, alt # 4 was the unit off my friends long totaled sport and its still on the car 20,000 miles later.



I think the police interceptor also has the clutched pulley I think.
Now it sucks and I dont know what to buy lol.
I think I'll just have this rebuilt.

They do but thats usually a 6G alternator, something I wanted to try fitting to my eaton swapped car but its long down the list of projects to tinker with.

[Turbov6Bryan]

Right where you plug it in. See photo

[77pantera]

I call bullsheep. The Vic alt won’t work, many people buy a Vic alt and it won’t charge... there have been wayyyy too many posts about it. Been a lot of folks handed a 4g Vic one by the parts store and they don’t work.
I am not discrediting anyone, but I really don’t feel like arguing when I’ve seen it in person.
plus the brush packs are completely different colors, making me believe one is pwm and the Vic being 5 volts reference

I had an alternator off an 04 Vic on my 03 trilogy for quite a while, worked perfectly fine.

[musclemerc]

I had an alternator off an 04 Vic on my 03 trilogy for quite a while, worked perfectly fine.

Trilogy and Eaton swapped MM alt are exempt as neither use the clutched pulley.
You cannot utilize a clutched pulley on an alt that spins un reverse.

[MyBlackBeasts]

According to Tasca Ford parts catalogue, the 2003 Mercury Marauder, 2003 Mercury GM and the 2003 Ford CV all use the same part number 4U2Z-10V346-ABRM 130amp alternator or 3W3Z-10V346-ACRM 120amp alt.

[offroadkarter]

Trilogy and Eaton swapped MM alt are exempt as neither use the clutched pulley.
You cannot utilize a clutched pulley on an alt that spins un reverse.

okay but you can remove the clutch pulley and its the same alternator. Its not like the Marauder has a one direction only alternator, my eaton swapped DTR is using the factory alt with the clutch pulley removed.

[77pantera]

Trilogy and Eaton swapped MM alt are exempt as neither use the clutched pulley.
You cannot utilize a clutched pulley on an alt that spins un reverse.

It's almost like you can swap pulley's or something.
The PCM doesn't care which pulley is on there.
Again, I used an 04 Crown Vic alt, on a 300a, without any issues what so ever.