i really have a hard time explaining what my jeep has beeen doing when im talking to my dad or friends, but here it goes. ill start it and everything sounds fine and back out of my drivway without problem. than ill start to drive down the road and no matter how hard i hit the peddle it will stay at about ten mph. than it will take off so i step off the peddle. than it will slow back down and start to studder. its never actually stalled until yesterday. i have a bad O2 sensor or two (when i get some money theyll be fixed), could this cause that? is the problem more serious? i have a 99 automatic. if you need any other info just ask. as always thanks for the help guys.

 

im gettin the same type of symptoms somewhat so if anyone knows let us know

 

Replace your oxygen sensors and see where you are at. This could be related. Do you have a check engine light/code? If so, post the EXACT codes here for comment. With OBD codes, we must see the actual PXXXX code to help you.

I seek out NTK for an oxygen sensor brand. Ebay = noway for engine management sensors, unless the brand is confirmed (NTK or Bosch).

 

i have the code(s) but ill have to post it here in the morning. it usually happens when the jeeps cold. so like the first time i start it for the day.

 

okay my code is P0138

 

A P0138 is the upstream O2 sensor check all the wiring for it and make sure its all good

 

what do you mean check the wiring?

 

So the power starts cutting in and out as soon as you start the forward movement? If so, I had that same problem before. Haven't had said problem since replacing all O2 sensors and Cat.

 

its not as soon as I start. but close to it. I can get about thirty yards or so. than it'll studder. but when it stalled I got close to a hundred yards.

 

Mine would sputter about 15 feet out of my driveway, and cut in and out a few times before resolving. (Weird kind of sputtering like the engine is losing vacuum or just being flooded with fuel and choking.)

For starters, I tried letting mine warm up for a few minutes longer before driving. It definitely helped....I also noticed that mine only did the sputtering during the initial warm-up each time.

I also got O2 sensor codes, and replaced them. Then I got some kind of O2 sensor circuit code. The problem completely resolved after getting new cat.

 

sweet thanks. ill change them this weekend. and hopefully that solves it. ill update when i finish.

 

Change the O2s. Why do people that have problems already not remedy those before stating they have a NEW one. Fix the friggin things that are broke and work from there.

 

i never said i had a new one. i said i knew i had bad o2 sensors and asked if this could be the cause.

 

just got the upstream o2 sensor replaced. only took a propane torch and some muscle. my dad and i got it in about thirty minutes. thanks for the advice guys. the jeep is running fine now!