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Unread 11-27-2013, 05:46 AM   #1
Jtpeej
Registered User
2000 XJ Cherokee 
 
Join Date: Feb 2013
Location: Patchogue, Ny
Posts: 6
Rough idle

Just picked up a 2000 Cherokee 6 cyl. Truck runs great off the line and at speed. Problem is a rough idle. Watch the tach go from about 500 to 900. Seems worse when warmed up. When cold seems to maintain around 750rpm. Did a set of plugs and 2 tanks with a fuel additive. Noticed a crack on one of the fuel injectors. Would this matter? Any ideas?

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Unread 11-27-2013, 10:35 PM   #2
uberxj92
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1992 XJ Cherokee 
 
Join Date: Oct 2012
Location: umatilla, florida
Posts: 1,898
The crack might matter. Check engine light? Try pulling codes. It could be as simple as cleaning the throttle body. Check vacuum lines make sure they're not broke or cracked.
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