92 Manual XJ, Low & Rough Idle/sputtering
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Year: 1992
Model: Cherokee
Engine: 4.0L HO
92 Manual XJ, Low & Rough Idle/sputtering
Hello All,
I recently have been experiencing some low idle, rough idle and sputtering in my 92 XJ. I did the key trick and got Codes: 21, 22, 24 & 31. I had an brand new extra TPS and replaced the old one. The Idle and sputtering got worse on start up. I was thinking it could be CPS again?? I checked fuel filter and the fuel looked pretty clean, no slugged or dirt. Maybe fuel pressure? But I don't have a gauge to check the pressure... I will check the plugs, Dis cap & rotor, before buying a new CPS. What else can cause rough idle? Can Codes: 21, 22 & 31 cause it to run rough? Help, she's my DD!!
Cheers!
Steve
I recently have been experiencing some low idle, rough idle and sputtering in my 92 XJ. I did the key trick and got Codes: 21, 22, 24 & 31. I had an brand new extra TPS and replaced the old one. The Idle and sputtering got worse on start up. I was thinking it could be CPS again?? I checked fuel filter and the fuel looked pretty clean, no slugged or dirt. Maybe fuel pressure? But I don't have a gauge to check the pressure... I will check the plugs, Dis cap & rotor, before buying a new CPS. What else can cause rough idle? Can Codes: 21, 22 & 31 cause it to run rough? Help, she's my DD!!
Cheers!
Steve
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Year: 1992
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Ok, so far I've replaced the TPS, CPS, Temp Sensor, Distributor Cap, Rotor, cleaned grounds and cleaned sensor connectors with electronic cleaner. It runs a lil smoother but still bogs and sputters. Next is to check fuel pressure or change Fuel Pump. Would an Intake Leak cause this problem too? I recently installed an APN header. Could it be dirty injectors? I also have a set of Neon 703 injectors I can install. Any ideas??
Last edited by LaredoBucket; 05-22-2015 at 02:34 AM.
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Year: 1992
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Engine: 4.0L HO
Ok, so far I've replaced the TPS, CPS, Temp Sensor, Distributor Cap, Rotor, cleaned grounds and cleaned sensor connectors with electronic cleaner. It runs a lil smoother but still bogs and sputters. Next is to check fuel pressure or change Fuel Pump. Would an Intake Leak cause this problem too? I recently installed an APN header. Could it be dirty injectors? I also have a set of Neon 703 injectors I can install. Any ideas??
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Year: 1992
Model: Cherokee
Engine: 4.0L HO
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