As a general rule never go faster then 55 in four wheel drive. If you are in a situation where you are in 4x4 and constantly going less than maybe 10 mph then put it in 4x4lo. This will gear the transfer case down so that the engine works less. Hope this helps.
Normal operating tmp is between 195 and 220
depends on the thermostat normally 190 f
mine does 205. whats yours?
A 1998 Jeep Wrangler does not have EGR.
Trim package
yes
No, they are different
No, it will not.
Will a 304 engine fit in a 1998 TJ jeep wrangler?
Yes
yes
YJ to a TJ, no