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Discussion Starter #1
As the title says, my alternator is failing. See the link to the video...

It is quite interesting how VERY quickly this failed, within 30 miles. I see that I can buy refurbished/used/new etc however, it seems everyone is selling the 4.7L alternators for much more than the 4.2L.

From my little bit of research, I have found that the 2 alternators are exactly the same thing! Can anyone confirm or deny?

I found this spec sheet that leads me to believe that the markets are being the markets (asking more money than necessary) and the alternators are exactly the same.

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4.2 and 4.7 wet sump ones should be the same...I wouldn't want a used one as you have a used one and it just failed....I also can't behind a rebuilt one..Lots of cheap Chinese components are being used to rebuild them cheaply...Several folks have tried reman. on on here and they haven't even last 1 year....I would pony up for a brand new OE one IMO....Jason
 

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Discussion Starter #3
Yea, new they are not priced too much. Just to clarify, my current alternator appears to be original OEM, not used or re-manufactured. I am excited to dig into this job and do other maintenance while I am in there.
 

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Since you've got to unbolt the intake manifold to replace the alternator, are you doing anything else when you change it such as replacing intake gaskets?
 

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Discussion Starter #5
Absolutely. Going to change the intake gaskets, likely both valve cover gaskets. Might as well do the spark plugs too. Debating on coils.
 
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Probably a little over board there and messing with stuff for no reason..Coils hardly ever go bad and the bill will get expensive quickly.. You can generally use the intake gaskets again...The valve covers gaskets are kinda a different job than the alternator and a little bit more involved...Jason
 

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Discussion Starter #7
I've read that intake #4 gasket tends to fail after this job due to the way the intake manifold has to move and sit during this job. For about $8, it would be silly to not buy them and install for good measure.

Although my valve cover gaskets have less than 10k miles on them, my passenger side valve cover near firewall has a small leak. Although this was done by ferrari professionally, goes to show dealership mechanics make mistakes too.

Spark plugs are inexpensive and I do not know the age, so again, silly to not change them.

Since coils are expensive and generally easy to change with everything installed, I will likely leave them.
 

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Intake gaskets don't need to be renewed unless you damage one. And yes, #4 is the one that pinches if you only lift the front of the manifold instead of removing it completely. If you can get those green gaskets for $8 each, then that's a decent deal. I think I paid $35-$50 each at the dealer.

As for the valve cover gaskets, they notoriously leak exactly where you are describing. The lobes on the firewall side don't always seat perfectly. I started only ordering the Ferrari gaskets in lieu of the Maserati ones because of the quality of the rubber and seams, etc. I can't guarantee it helps, but when comparing the parts next to each other, there are differences in what appears to be quality.
 

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Discussion Starter #9
Intake gaskets don't need to be renewed unless you damage one. And yes, #4 is the one that pinches if you only lift the front of the manifold instead of removing it completely. If you can get those green gaskets for $8 each, then that's a decent deal. I think I paid $35-$50 each at the dealer.

As for the valve cover gaskets, they notoriously leak exactly where you are describing. The lobes on the firewall side don't always seat perfectly. I started only ordering the Ferrari gaskets in lieu of the Maserati ones because of the quality of the rubber and seams, etc. I can't guarantee it helps, but when comparing the parts next to each other, there are differences in what appears to be quality.
Have a link for the ferrari gaskets that are compatible? I have the 09 QP 4.7s.

The gaskets I would get from scuderia parts.

They have 2 options, POS.1 code 252163 for $11.33 each (more than $8 each) or POS.1 code 231732 for $71.23 each.

Anyone know the difference? I assume there was a manifold revision? ?‍♂
 

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Discussion Starter #10
Just an update since many people make a post and never follow up. I had some time yesterday evening and decided to rip out my battery and check if it is swollen etc. Well never trust a dealership guys.... They said this car was fully maintained (which most is) new battery etc. Well, guess what... my car had the original 2009 battery! No wonder my alternator was smoking... It was trying to charge this turd and the car. Figured I would post some pics here.

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Have a link for the ferrari gaskets that are compatible? I have the 09 QP 4.7s.

The gaskets I would get from scuderia parts.

They have 2 options, POS.1 code 252163 for $11.33 each (more than $8 each) or POS.1 code 231732 for $71.23 each.

Anyone know the difference? I assume there was a manifold revision? ?‍♂
Honestly, I don't see them changing the year stamp convention for double digits. That should mean 2019, not 2009.
 

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Discussion Starter #12
Honestly, I don't see them changing the year stamp convention for double digits. That should mean 2019, not 2009.
Dont you think it would make more sense for them to then mark off the 1 and the 9 to signify 19 since that would take them literally 1 second longer?
 

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Discussion Starter #15
Ok. I will see if I can confirm this. No sense in buying another battery if indeed this battery is not even a year old. Just strange how it registers 0% voltage. Straight up dead.
 

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I agree that it could just as easily be 2019, this is common.

However, I would simply connect it to a battery tester and you'll see the State of Health (SOH) and State of Charge (SOC) this is pretty useful and most Auto parts stores or drive in mechanic shops will test for free.

Hope it helps!

Best Regards,
 

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Discussion Starter #19
I agree that it could just as easily be 2019, this is common.

However, I would simply connect it to a battery tester and you'll see the State of Health (SOH) and State of Charge (SOC) this is pretty useful and most Auto parts stores or drive in mechanic shops will test for free.

Hope it helps!

Best Regards,

Unfortunately I have been around the block a lot and would have never fallen for that $25 lol. Cars are one of my passions and have years of mechanical experience. With that said, when I had my car towed, the tow truck company tested the battery on site and it had 0% everything. It wouldn't even register it was connected to his device. Pretty strange considering in the morning I drove to work etc.

I will take it to the good old autozone and have it tested professionally tonight. Assuming the corona virus does not get any more crazy here... In chicago land. Cancelling all schools, most stores are sold out of toilet paper (of all things....) food etc. Closing stores etc....
 

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Good luck Matt, hope it's just a quick fix on the battery, definitely the easiest way to go. Try to check your voltage once it's back in before and after you've started the car, you should see the alternator doing it's job to charge.

Best Regards,
 
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