1987 Renix High Idle Issue
Seasoned Member
Joined: Sep 2022
Posts: 267
Likes: 93
From: Eastern Shore Maryland
Year: 1988
Model: Cherokee (XJ)
Engine: 4.0
Vacuum for brakes is big hose plugged into the master cylinder brake booster from the intake manifold. You can unhook it and plug the hose to see if it improves.
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