About 1 3/4 tons
just two in the rear
its a five lug so 5
3600 lbs
COIL
Try nada.com
The owners manual on my 5th Ave says 18 us Gal
5.2 liters (318 cid)
No, a 1991 Chrysler New Yorker does not have chip key.
Turn signal stalk.
Assuming you mean catalytic converter, yes
Your relay sensor is likely faulty
Depends on overall condition, mileage, options, etc...