I have an annoying problem with my 2016 F-Type. I just put a brand new alternator in it this weekend as the old one was absolutely covered in oil and not working anymore. Everything is hooked up properly. I'm getting proper voltage from the battery and the alternator... But my car still says "charging system fault" with the red triangle. Plus, I get 3 engine lights. Low voltage, and fuel injector monitor A and B. It has an interstate battery less than a year old. My battery seems to be holding charge fine and the alternator seems to be working properly. What is going on? Yes I reset everything, cleared codes, checked my ground, unplugged battery.. to no avail! Can anyone help
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Forgot to include my voltage from the battery. 12.6 when car is off. 13.7 when car is on

 

On the short list - make sure the battery is FULLY charged. Given that you started with a bad alternator, it might have been down a bit, and that can be responsible for all sorts of error codes. Put it on a CTEK for a good long run and see if that helps. And, if that doesn't immediately clear things up, I'd pull the battery cable again to do a reset.

Something COULD have been fried in the course of events, but, given the mixture of codes you're seeing, that's not my first guess.

 

If you have an AGM battery I'd have thought you'd need to see about 14.5V when it's charging, maybe that's why the car is seeing a charging fault?

 

I'll make sure I have an AGM battery. I was not the one that put it in, but it has worked fine up to this point I have put thousands of miles on the battery I bought with it. I could not find any specific voltages for the car so thank you for letting me know about the 14.5

 

Two questions:

1. Has the source of the oil leak been corrected?
2. Did you purchase an aftermarket or 'rebuilt' alternator?

 

Yes oil leak is completely fixed. The alternator I bought was an indentical Denso to the one that was on the car before, it is just not branded by Jaguar because I didn't want to spend $1,000 lol

 

Not rebuilt, brand new

 

Quite often alternators don't match the vehicle's electrical system. Even that the unit is a Denso unit, there may be differences in the regulator unit that trigger the instrument cluster warning.

It's always best to remove the original alternator and have a local automotive electrical specialist overhaul the unit to avoid having the instrument cluster warning. If you still have the alternator that was removed from the vehicle, have it looked at by a competent automotive electrical specialist.

 

I do have the original alternator yes, I could have it cleaned up and rebuilt. Thank you for this information. Unless if you know if it would be harmful to be driving around with this new alternator, I do plan on driving it while my old alternator is being rebuilt or until I could get a new OEM one

 

I'd put the old alternator back in and see if the issue goes away. If so, then it's a problem with the new Alternator. I can't tell you how many times I've lost hours or days due to a bad new part...

 

I'm reminded of when the E-Type cut off as I was backing out of the driveway (to pick up a pizza). No worries, I just used a different car. The next day, I diagnosed the problem was the electric fuel pump (external to the tank, in the trunk, on E-Types). I picked up a replacement from the parts store and was on my way. Done and done.

A few weeks later the car suddenly just cut off going down the highway. I checked under the hood, fiddled around a bit checking connections, but didn't really see the problem. When I got back in the car, it cranked up and ran fine. A couple of weeks later, same story. A week later, same story. I finally gave up and took it to the shop. They kept it a couple of days and gave up. "We started it up in the corner of the shop and it would run for hours without a problem." Of course, on the way home, it cut off again (and restarted, again). Finally, I was inspired to take out the new fuel pump and bench test it. It worked fine - except if you giggled the wires a bit. Bad internal connection. Meanwhile, BTW, the car ran fine in place with no fuel pump - as long as you weren't driving/hitting bumps in the road. One more trip to the parts store and I was back in business.

On a car that age, it's no surprise that something might break - and the one thing you "know" isn't the problem is the new part you just put in. Not.

 

Did you clean the electrical connections with a contact cleaner to get rid of any oil residue?