Np242

[xj1995]

im getting a loud poping in 4low

[4.3LXJ]

Sounds like a u joint issue

[xj1995]

i have had them looked at they seem fine it also pops in 4low in reverse also

[4.3LXJ]

Not in 4 hi?

[xj1995]

Pops in 4hi part time not as much in full time and really bad in 4low ,

[4.3LXJ]

Gonna stand by the U joint thing. Check the CV joint in the front drive line closely. That is the first thing I would look at.

[xj1995]

How do i check them out?

[4.3LXJ]

You will need to remove the shaft. It is probably the ball and socket in the center that is giving you trouble

[xj1995]

can you show me a picture please

[4.3LXJ]

Best place pictures for drivelines is the Tom Woods Drive Line website. He makes all kinds and sizes and has great pics of each type

[xj1995]

why wouldnt to do it in 2wd?

[4.3LXJ]

No pressure on the front drive train. When you shift it in then there is horsepower applied to everything and stuff like that will show up

[xj1995]

are you staying the axle u-joints or what?

[xj1995]

my front drive shaft has yellow paint like from a junk yard

[xj1995]

if i take the drive shaft out would that help me narrow the problem down?

[4.3LXJ]

It will allow you to flex the CV joint and examine it closely. You can also drive it in 4WD and find out it is not the tcase. Does it pop when turning or going straight?

[89Cherokee Pro 2]

If you find it is not in the u joints another possibility would be the chain in transfer case 242 are actually easy to tear down and repair