One of the best help you can find on the subject is located on:
http://home.sprynet.com/~dale02/
diagram from front vacuum motor to transfer case of 1993 Jeep Wrangler
yes
http://home.sprynet.com/~dale02/vacuhose.htm
How do you change the steering shaft in a 1990 Jeep Wrangler?
Try this link! http://www.off-road.com/jeep/questions/2003_04/diagram.gif or http://www.off-road.com/jeep/questions/2003_04/
The amount of oil needed for a 1990 Jeep Wrangler is 6 quarts. The Jeep Wrangler uses 10W 30 oil.
nein
I shouldn't, 1990 is a YJ and the 97 is a TJ.
No
You want to look on the intake manifold on the Jeep Wrangler.
A person can find a vacuum hose diagram for this car by asking if an auto tech will print one out. It is also found in the cars maintenance and repair manual.
Certainly, they are both YJ"s.