Help! Rough idle and "sputtering"
#1
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Year: 1999
Model: Cherokee
Engine: 4.0l
Help! Rough idle and "sputtering"
When my jeep is at idle in park, it is idle-ing very rough. When I go to put it in drive and accelerate, it hesitates and the rmp's bounce around and jolts me forward and back, unless I step on it hard. I replaced plugs, wires, cap and rotor and also cleaned the IAC, and still seem to be having issues. Gas mileage also seems to be worse than usual. Can anyone tell me what needs to be fixed/replaced?
#2
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Year: 2004 WJ, 1998 XJ
Model: Grand Cherokee(WJ)
Engine: 4.7 HO
When my jeep is at idle in park, it is idle-ing very rough. When I go to put it in drive and accelerate, it hesitates and the rmp's bounce around and jolts me forward and back, unless I step on it hard. I replaced plugs, wires, cap and rotor and also cleaned the IAC, and still seem to be having issues. Gas mileage also seems to be worse than usual. Can anyone tell me what needs to be fixed/replaced?
You can see how dirty it was here.
https://www.cherokeeforum.com/f2/rou...etimes-198067/
#3
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Year: 1989
Model: Cherokee
Engine: 4.0 renix
Check cruiser's tips.
I'd be looking into CCV tubes being clogged from the valve cover and around the airbox as well as checking grounds (dipstick tube) and maybe vacuum leaks.
Possibly o2 sensor but meh...I'd wait on that. You have a 99? Is it throwing any codes? How long has it been doing this?
I'd be looking into CCV tubes being clogged from the valve cover and around the airbox as well as checking grounds (dipstick tube) and maybe vacuum leaks.
Possibly o2 sensor but meh...I'd wait on that. You have a 99? Is it throwing any codes? How long has it been doing this?
#5
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Year: 1999
Model: Cherokee
Engine: 4.0l
ok so I replaced the upstream 02 sensor the other day, and this morning I replaced the TPS. Still having the same issues... I occasionally get a popping sound from under the hood too. Nothing seems to help.
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