4n6pc

I have no idea why this is happening, it started a couple of days ago and only happened a couple of times. today it was bucking both ways to and from work??? to give you the best example of what it is doing is that it seems like it is going to run out of gas, sorry thats the best I can do other than i think it backfired as well but not sure. any ideas?

89xjcherokee

My Jeep hasnt done this but my parents dodge would do the same kind of thing. After a while the Trani just went out. So my guess would be the transmission from what it sounds like.

cjjackson2400

maybe missing a lilttle check your spark plugs for fowl or cracks.. when was your last tune up..

4n6pc

just bought it a couple of weeks ago, so I dont know what has been done to it. I am going to look at the sparks, gas, and exhaust will let you know what i find. thanks should be interesting

4n6pc

turned out the cat was busted on the inside replace the cat and muffler seemed to be fine but now and again it bucks, nothing like before but definitely still does it. I will be checking the sparks and cap but short of replacing parts I am not a mechanic, so what am I looking for when I remove these to check them or should I just replace them anyway? any other suggestions as to what I should check are welcome.

Thank you

UserID6095

Check engine light?

I would check the front o2 sensor. Make sure its there, it works and the fuse for it (in the PDC) is not blown.

Throttle position sensor and Crankshaft sensor can casue this as well. Do you have a multi-meter?

widefieldcherokee

like he said ^^ check the front O2 sensor then chaeck the MAP sensor most likely on of the two

troyatl

mine did that when i bought it and i did a routine tuneup and it hasnt happened since

4n6pc

thanks guys, TRS80 I do have a multimeter, I bought the chilton book for it will that (if you know) assist me in checking the sensors? otherwise what is it i am checking them for and can you point me to how to check them? I can google it as well if you dont have the time to explain. I appreciate all the replies thanks.