Where's the vac hose on my Jeep Grand Cherokee V8?

G

gilletto86

New member
It's a 1996. The code says running lean which a mechanic suggests is probably a vac leak. Where might this be located and what supplies do I need to fix it?

Just some background information the Jeep runs ok for the first time but if you turn it off and try to drive it again within a couple hours it runs like crap with a lot of knocking and pinging and not wanting to go and stalls, then after about 4 minutes it runs alright. Vac leak?
 
The vacuum lines run from the intake manifold to a number of devices under the hood and dash including the PCV valve, Power brake booster, Heater / Air conditioner controls, and a number of emission controls. Any of these may be responsible or an intake leak.
 
The vacuum line is a black rubber hose running out of the intake manifold. If you find a hole in one of the lines, take the hose and go to an auto parts store and get a new one.
 
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