Yes, another rough idling cherokee thread
Haha ok so I have been trying to fix this rough idle since I bought it. It seems as if my mpgs have taken a hit also.
99 XJ 4.0 aw4 heres a list of what I've done Fuel injector cleaner in tank Cleaned IAC/TB Fixed header/exhaust manifold leak New plugs cap rotor wires Champion coppers.. gapped .35 New upstream o2 NTK Checked all vaccum hoses brake booster stupid ball under fender (moved from bumper) all look good sprayed carb cleaner I am going to oreillys to rent a fuel pressure guage and check it Heres a video dont know if it'll help any but hoping so you can hear it knock a little at the beginning |
Sounds just like my 99'. My idle is rough too though. Sub'd.
I know I have a exhaust manifold crack though. I'm not sure how much that after the idle. Did pretty much the same maintenance as you less the (fixed exhaust leak) Running refurbished fuel injectors too. Didn't help rough idle but did give it a much faster start and seemingly better MPG |
Whats the ideal fuel pressure I am looking for?
I need to get a multimeter too so what sort of readings am I suppose to get on my TPS and what else should I test? |
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