Missing screw in my differential?

[withanx]

I was looking at my differential to confirm my gear ratio to order a tune, and I noticed a screw/plug seems to be missing. Can anyone confirm this is an issue, and if so, should I replace it? Could I be missing oil?

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[Ebm]

I was looking at my differential to confirm my gear ratio to order a tune, and I noticed a screw/plug seems to be missing. Can anyone confirm this is an issue, and if so, should I replace it? Could I be missing oil?

Does your differential cover have a FoMoCo stamp somewhere on it? Did you buy the car new or used?

 

[withanx]

Does your differential cover have a FoMoCo stamp somewhere on it? Did you buy the car new or used?

I bought it used. I don't have it jacked up at the moment to search for the stamp, but I can take a look this afternoon.

 

[ANGST]

It's fine, nothing missing , do you have an automatic ?

 

[withanx]

It's fine, nothing missing , do you have an automatic ?

Ok, so that threaded hole is normal? It's a manual.

 

[ANGST]

The threaded hole is normal , I have a 3.73 and my cover looks different, but looking at pics online I see a few that look just like yours.

My diff has a temp sensor tapped onto the cover ( stock )

 

[Ebm]

You could always run your car by a Ford dealership if you aren't sure.

It does look like the holes are supposed to be there, but not sure what the non-threaded hole does. Anyways, if you wanted to do your own Google searching, your car has a Super 8.8 differential in it.

 

[Vegas5OH]

That hole is normal, if you had a performance pack car that is where the diff temp sensor is supposed to go. You dont have a perf pack car so nothing goes there.

 

[withanx]

That hole is normal, if you had a performance pack car that is where the diff temp sensor is supposed to go. You dont have a perf pack car so nothing goes there.

Got it, thanks everyone who responded!

 

[boB]

The lower hole is for the differential temp sensor. According to the '19 service manual it is a standard feature but if your PCM is not reporting it missing then your car probably should not have the sensor.

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