The 4.0 engine has a CCV tube at the back of the valve cover that performs the function of a PCV. There is no actual valve as on other engines. The front hose is the fresh air inlet from the filtered side of the air cleaner.
its on the valve cover right behind the oil fill cap..
Its on the front of the valve cover the first hole behind the oil fill hole
A 1998 Jeep Wrangler does not have EGR.
Not exactly. The body styles are different. A 1991 Jeep Wrangler is a YJ as a 1999 is a TJ. t
So what is the question about your 1991 Wrangler horn?
no
yes
PCV valve is on top of one of your valve covers and it should just pull out there should be a big rubber line on it
A 1991 Jeep Wrangler uses DOT 3 brake fluid.
No, they are a different bolt pattern.
how to replace the slave cylinder on a 1993 jeep wrangler
Yes. A 1991 Jeep is fuel injected.