|02-22-2012 08:12 AM|
|02-21-2012 08:31 AM|
|02-21-2012 08:27 AM|
o2 sensor is part of regular maintenance that commonly gets overlooked (me too). I think they should be changed out ever 75k to 100k. I have 117k on mine, and its hasn't been changed.
I had a pretty rough idle and it ended up being my #5 plug. After I changed my plugs, it obviously ran a lot better.
It really depends on you and how rough your idle is. It wouldn't hurt to check your coil packs and possibly change out the o2 sensor. Good Luck!
|02-21-2012 08:02 AM|
|wwch99tj||You said you were thinking 02 sensor try unplugging it and see if it runs any better, when you unplug it it will run off of the computer presets. Does it idle rough all the time when its cold and warmed up|
|02-21-2012 07:57 AM|
|02-20-2012 03:04 PM|
|bal31||Nope...getting between 18-20 mpg... I have had a few emissions codes( P0442, P0455, P0456). Checked all of the EVAP lines and fuel lines. Can't find any leaks. Replaced gas cap. it is odd to me that my gas mileage is still really good.|
|02-20-2012 01:47 PM|
|kfdjason7620||Had bad gas mileage?|
|02-20-2012 01:29 PM|
|bal31||I was thinking possibly and O2 sensor???|
|02-20-2012 01:16 PM|
|kfdjason7620||That's right, well actually they switched over at mid year 1999|
|02-20-2012 12:59 PM|
|02-20-2012 12:33 PM|
|kfdjason7620||2000 and newer have no plug wires|
|02-20-2012 12:30 PM|
|mudmagnet63||Plug wires? an easy way to check raise the hood at nite and look for sparking. Much better than gettin bit. or bad gas|
|02-20-2012 11:22 AM|
Rough Idle help
I have a 2002 TJ with a 4.0....IT has a little bit of a rough idle. Nothing bad, but just slightly rough. IT has 70,000 miles on it. I took the Throttle body off and cleaned it the TPS and the IAC. I also changed the plugs and put seafoam in the gas. I still have a rough idle. Any other ideas of things i can do??