Map Sensor
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Newbie
Joined: Feb 2011
Posts: 25
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From: Ballston Lake
Year: 1992
Model: Cherokee
Engine: 4.0
Just installed a new map sensor and I still have the same codes coming up and the same rough idle. How do I test the power going to my map sensor I believe that is my problem( not the sensor but the power going to it.) and how do I fix short of running new wires
☠ CF Sheriff ☠

Joined: Nov 2009
Posts: 15,197
Likes: 18
From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
more than likely it's not electrical. I'm betting you have a vacuum leak throwing off the sensor. Check the hose running directly from the MAP to the intake/tb for crack, breaks, loose fittings, etc.
Also check the rest of the vacuum system for leaks.
What year cherokee is this?
Also check the rest of the vacuum system for leaks.
What year cherokee is this?
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