Perhaps you have a leak in your transmission. Check the Transmission Fluid while the car is running. DO NOT check any other fluids while the engine is running.
My '96 Cherokee Sport does, so I bet a '98 does.
The grand Cherokee is a body style, sport is a trim package that is used on all jeep models(wrangler, Cherokee, grand Cherokee, patriot, ...)
The fuel pump is in the gas tank on a 1999 jeep Cherokee sport.
Yes, they are the same vehicle, the sport is just a option package.
1996-2000 Cherokee.
NoNo
Jeep Cherokee XJ 1984-1996 should interchange Jeep Cherokee XJ 1997-2001 should interchange
Sport, Country Classic, Limited, (and others) are the names of available option packages. You basic 1984-2001 Cherokee is pretty much the same as any other Cherokee.
It is one of the available trim packages.
No, the XJ Cherokee does not have the same heater box as a WJ Grand Cherokee.
Turn signals
No