Rough idle -
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post #1 of 2 Old 11-27-2013, 06:46 AM Thread Starter
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2000 XJ Cherokee 
Join Date: Feb 2013
Location: Patchogue
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?

Jtpeej is offline  
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post #2 of 2 Old 11-27-2013, 11:35 PM
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1992 XJ Cherokee 
Join Date: Oct 2012
Location: umatilla
Posts: 1,961
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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