Idle issues
Thread Starter
Newbie
Joined: Feb 2013
Posts: 20
Likes: 0
From: Colorado Springs, CO
Year: 1991
Model: Cherokee
My 91 XJ limited is idling around 2k. I have adjusted the throttle down all the way.
There's a few things I've noticed.
A: This solenoid has a vacuum line that is broken

(Left side)
B: This sensor, if I touch it, causes stutter and check engine light to come on immediately.

Sensor in the middle, the knobby part just before it goes into the firewall.
I have the Haynes manual, but I am new to wrenching and have a hard time making heads or tails of things.
Thanks in advance!
There's a few things I've noticed.
A: This solenoid has a vacuum line that is broken

(Left side)
B: This sensor, if I touch it, causes stutter and check engine light to come on immediately.

Sensor in the middle, the knobby part just before it goes into the firewall.
I have the Haynes manual, but I am new to wrenching and have a hard time making heads or tails of things.
Thanks in advance!
That broke vac line isn't helping anything. The vac *****, lines and PCV's all need to be good. As for sensor, idk.. Not a Renix man... I know you adjusted TPS, but does this help?
http://www.naxja.org/forum/showthread.php?t=1072534
http://www.naxja.org/forum/showthread.php?t=1072534
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Vacuum leaks cause high idle, as well as bad IACs and TPSes. What are you indicating in the second pic? MAP tube? TPS? One of the intake manifold sensors?
Thread Starter
Newbie
Joined: Feb 2013
Posts: 20
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From: Colorado Springs, CO
Year: 1991
Model: Cherokee
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From: Colorado Springs, CO
Year: 1991
Model: Cherokee
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From: Prescott, Az
Year: 1990
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Thread Starter
Newbie
Joined: Feb 2013
Posts: 20
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From: Colorado Springs, CO
Year: 1991
Model: Cherokee
So... That highlighted pod... Can anyone enlighten me? Runs from firewall into a larger bundle of wires, over towards the engine block and disappears down just to the right of the valve cover.
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