93 4.0 6 cyl...rough idle
I have a rough idle in my 93 cherokee the idle shows right at 8 rpm
I have recently replaced the idle control valve, tps, and the coil and plugs
any other suggestions to assist would be greatly appreciated!!
I have recently replaced the idle control valve, tps, and the coil and plugs
any other suggestions to assist would be greatly appreciated!!
Senior Member
Joined: Jun 2009
Posts: 670
Likes: 0
From: Central Pennsylvania
Year: 1989
Model: Cherokee (XJ)
Engine: 4.7 H.O.
Check for as vacuum leak, if that's not it, check your injectors. If one is stuck open, it will be dumping too much fuel. It's a tough call without hearing it, alot of variables come into play.
CF Veteran
Joined: May 2009
Posts: 1,844
Likes: 4
From: Glen Burnie, MD
Year: 1994
Model: Cherokee
Engine: 4.0 H.O. K&N, Borla headers, custom down pipe, magnaflow hi-flo cat, flowmaster to turn down tip
check for sensors upluged, bad ground connections. if all look good then seafoam the hell out of it!
CF Veteran




Joined: Nov 2010
Posts: 5,841
Likes: 117
From: In the middle of Minnesota!
Year: 1999
Model: Cherokee
Engine: 4.0
1. Finish your tuneup with plug wires, distributor cap, rotor, fuel filter. Failing to freshen tuneup hardware when symptomatic can result in the chasing of your tail.
2. CLEAN your throttle body. They get very carboned up over time and miles and can leave you with some idle symptoms.
2. CLEAN your throttle body. They get very carboned up over time and miles and can leave you with some idle symptoms.
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