MattAlpha
NAXJA Forum User
- Location
- Marina, CA
I feel stupid asking this question, but here goes.
About two months ago a thumping sound started in the rear of XJ during rainy/wet/snowy weather (sometimes the day after a storm).
The sound seems to emulate from my rear drive shaft when I'm traveling between a crawl up to 15mph. A distinctive thump is heard, then another and then another increasing in periodicity as I speed up. If I maintain the same speed, the thump sounds at the same periodicity. The strange thing is that sometimes it sounds like it coming from left or the right rear wheel and then other times it just seems to come from the center of the XJ's rear end. Usually after I drive at high speeds the thump will go away at subsequent low speeds (until I park it or drive through a puddle deeper than a half of an inch). Sometimes along with the thump I feel a pulling feeling like something is sticking, trying to stop my forward motion.
Due to the symptoms it seemed to me to be some type of corrosion problem between my transmission the rear wheels. I lubed up all the pivot type joints on the axel. The Jeep seemed to drive smoother, but the thump came back the next rainy day.
I did change my drums, their pads and all springs (etc) about a month before this problem started. I think it might be the Universal joint but I'm not sure. Any suggestions?
About two months ago a thumping sound started in the rear of XJ during rainy/wet/snowy weather (sometimes the day after a storm).
The sound seems to emulate from my rear drive shaft when I'm traveling between a crawl up to 15mph. A distinctive thump is heard, then another and then another increasing in periodicity as I speed up. If I maintain the same speed, the thump sounds at the same periodicity. The strange thing is that sometimes it sounds like it coming from left or the right rear wheel and then other times it just seems to come from the center of the XJ's rear end. Usually after I drive at high speeds the thump will go away at subsequent low speeds (until I park it or drive through a puddle deeper than a half of an inch). Sometimes along with the thump I feel a pulling feeling like something is sticking, trying to stop my forward motion.
Due to the symptoms it seemed to me to be some type of corrosion problem between my transmission the rear wheels. I lubed up all the pivot type joints on the axel. The Jeep seemed to drive smoother, but the thump came back the next rainy day.
I did change my drums, their pads and all springs (etc) about a month before this problem started. I think it might be the Universal joint but I'm not sure. Any suggestions?