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?