Temporary sputter after 100 ft or so
#1
Temporary sputter after 100 ft or so
I have a 98 cherokee 4x4 completely stock has 122k on it. I bought it a month ago and been notice sometimes after startup I will pull out and about 100 ft or so it has a sputter and loss of power some backfire through intake sounding if I let off gas it will resume normal driving and have no issues and it doesn't do after every startup just every now and then. What could cause this previous owner installed new muffler and cat and there is no codes or stored codes. Only other thing I notice is when driving at higher speeds and let off gas the Rpms will kind of move up and down once it hits bottom like its not steady. But I want to fix it because I love the cherokee and want it too last me for a while any help me appreciated
#2
Member
Joined: Apr 2011
Posts: 110
Likes: 0
From: South east Michigan. (For now)
Year: 2001
Model: Cherokee
Engine: 4.0l
I have the same problem with my 98 Grand Cherokee 4.0.
I did a tune up and that did not fix it.
Plugs.
Cap.
Rotor.
Wires.
So Next on the list is to replace the front O2 sensor. From every thing I have read thats the next most likely cause.
I did a tune up and that did not fix it.
Plugs.
Cap.
Rotor.
Wires.
So Next on the list is to replace the front O2 sensor. From every thing I have read thats the next most likely cause.
#3
When was the last tune up? If your xj is new to you I would assume the PO never did it. Start with new plugs (champion coppers gapped to 0.035), cap, rotor and wires and go from there. Could be just a bad plug, which doesn't always trip a check code.
#6
CF Veteran
Joined: Apr 2011
Posts: 4,825
Likes: 2
From: Indianapolis
Year: '99 and '91
Model: Cherokee
I have a 98 cherokee 4x4 completely stock has 122k on it. I bought it a month ago and been notice sometimes after startup I will pull out and about 100 ft or so it has a sputter and loss of power some backfire through intake sounding if I let off gas it will resume normal driving and have no issues and it doesn't do after every startup just every now and then. What could cause this previous owner installed new muffler and cat and there is no codes or stored codes. Only other thing I notice is when driving at higher speeds and let off gas the Rpms will kind of move up and down once it hits bottom like its not steady. But I want to fix it because I love the cherokee and want it too last me for a while any help me appreciated
However, I have 3 codes, one for over voltage on engine coolant temp sensor, two for the downstream o2. I'm replacing the o2 sensors soon, I expect them to be the culprit.
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#8
CF Veteran
Joined: Apr 2011
Posts: 4,825
Likes: 2
From: Indianapolis
Year: '99 and '91
Model: Cherokee
#9
Also what cause the oil pressure to drop when coming up to red light drops to about 1/4 on the gauge then start driving and goes back up to a little below half is that normal? And after it sits and cranks up the pressure is normal thought sensor might be goin bad
#12
Junior Member
Joined: May 2008
Posts: 15,016
Likes: 11
From: +34° 25' 35.67", -81° 21' 12.04"
Year: 1993
Engine: 4.0
#14
Haven't had a chance to do the o2 sensor yet but on a good not I did get my lift kit ordered 3" rough country with 1" spacer in front and 15" d window wheels with 31x10.50 kenda mud tires does anyone know the center width on the rough country wheels for center caps? I didn't want to go to high