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Vladgmru, Automotive Electrician
Category: Jeep
Satisfied Customers: 2668
Experience:  I've been working with American made cars since 1992.
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I need the vacuum hose diagram for a 89 cherokee 4.0

Customer Question

I need the vacuum hose diagram for a 89 cherokee 4.0
Submitted: 8 years ago.
Category: Jeep
Expert:  Vladgmru replied 8 years ago.
My name is Vladimir.
There are several important vacuum lines can cause your engine running rough.
They are: a vacuum line to the MAP sensor, a vacuum line to the fuel pressure regulator ,and a vacuum to the EGR valve.
Please draw your attention to the EGR. If you connect the EGR valve to a constant vacuum source, your engine will run ugly.
Here is the vacuum diagram for your convenience.