There is no adjustment to the tightness. The idler wheel holds the proper tension.
CORRECTION: There is adjustment and it's found on the Power Steering Pump Bracket. It's hard to give a measurement of "how tight", but if I grab my belt between the Main Crank pulley and the Alternator, I can flex my belt about 1/2"in either direction with some good pushing. If it wasn't adjustable, you wouldn't be able to get the belt on the tensioner pulley to begin with.
I need a routing diagram for the serpentine belt on a 1998 Jeep Wranger, 4 cylinder, with air conditioning
Check the manufacturer's routing sticker under the hood.
Yes, they are both TJ wranglers, the top should fit
The 1998 Camry did not have a serpentine belt. Do you have a 1998 Corolla?
A 1998 Jeep Wrangler does not have EGR.
Yes they should fit fine
Most common cause is that it is too loose, but make sure none of the pulleys or driven accessories are bent or out of alignment.
Trim package
Yes that should work, they are both TJ's and most parts will interchange.
How do you route the serpentine belt for a 1998 w
yes
No they should not fit, 1990 is a YJ, and 1998 is a TJ