99 xj misfire?
04-08-2019, 05:20 PM
#1
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Model: Cherokee (XJ)
99 xj misfire?
I have a 99 xj 4.0. It recently started badly miss firing under load. I’m stuck on why to do. I’ve done a complete tune up, tps, and an upstream o2. Checked grounds and everything. Not sure what to do next. Any ideas?
04-08-2019, 09:11 PM
#2
Senior Member
You did plugs and wires ? Cap and rotor ? Verified spark to each cylinder with a spark tester ? Compression check ? When asking for help always try to include as much information on the issue at hand as possible .
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