Thanks very much for the reply guys.
This is a 1996 XJ se
All 3 motor mounts are brand new, (That was my first guess.)
It has the stock "Corporate" rear end, fluid level is good. I was pretty sure the end play in the axle wasn't excessive, I just couldn't remember how much was there before the...
I picked up a vibration all of a sudden about a week ago.
It starts at around 30mph and only happens under load, downhill = nothing.
It doesn't seem change in a turn and I'm not getting any clinks or clunks like a bad joint. I tried applying the breaks while accelerating, still happens.
I...
Skwerly: O'Rielly's ran the test.
Techno1154: I did try starting with the bat temp switch unplugged (which I think should have caused an error code but didn't.) But I don't see 20 ohms at 40º being an issue.
Since it's not charging and I'm not getting a "GEN" light or any sory of an error...
1996 XJ se with a 120 amp alternator upgrade. It has been running fine for a year and a half.
The alternator isn't charging, there's no CEL or stored trouble codes in the PCM
I pulled the alternator and it benchtested as good.
The battery and all the connections (checked twice), all are good...