There are four ways to find a ratio.
1 A dealer can normally tell from the vin number.
2 There are normally tags or labels on the axle that have part number, gear ratio, and fluid requirement
info.
3 You can count how many times you have to turn the driveshaft to get one complete turn of the tires.
4 You can divide the number of teeth on the ring gear and divide by number of teeth on the pinion.
No.
Could be either 3.55 or 3.73 :1
Yes
Yes
Yes.
Not exactly. The body styles are different. A 1991 Jeep Wrangler is a YJ as a 1999 is a TJ. t
Jeep Wrangler only,
A 1999 Jeep does not have a cabin filter.
No.
NO, you will waste your time and money.
A 1999 Jeep uses R134a.
I have a 1999 jeep wrangler and it get around 15MPG.