4wd problem I have a 87 ford bronco and I was wheeling the other night and I was in 4wd backing up to turn around then I put it in drive and gave it a little gas. well then it made a poping sound and grinding sound. I cant put it in park cuz it grind and I put it in drive and nothing happens idk what it is. I thought it was my belt in my t-case but idk

SOURCE: 2004 ford ranger

Its most likely either or, if its a high pitched sound its probably the wheel bearing. If its a growling/grinding/clunking sound its probably the CV Joint. However, your problem more than likely lies in either/both.

Marvin

• 85242 Answers
• Posted on Jul 29, 2008

SOURCE: 1998 ford taurus problem

Your Power Steering pump is were the noise comes from, the system fluid must be flushed until it's clean and the PS Pump replaced, around $300 to fix.

SOURCE: Transfer case is making a grinding noise in 2wd,

Depending on how long the grinding has been going on, the IWE ( integrated wheel ends ) might need to be replaced.

The problem that causes the symptoms is either cracked vac lines from the IWE solenoid, or a faulty IWE solenoid.

Check the vac lines to the IWE, this is the block diagram of the setup


Use a visual inspection and vac tester ( might vac with a gauge on it ) to test the lines.

Testimonial: "great! It was cracked vacuum lines. Thanks for the feedback!"

SOURCE: Grinding sound - front passenger wheel well Ford F-150 in 2 wheel

Today and over the weekend .I too had the same problem. Took it to the dealer and they tested everything and could not find the problem. Did vac test on the lines, Test drove it with code tester to see if there was any problems . Checked the hubs... They replaced the IWE solenold. Just hope that is the fix and it didn;t damage anything else... Thanks for the above info!

SOURCE: 2004 stx f150 right front wheel grinding noise,

I agree with duane_wong on this one ( not like he was looking for my approval :) ), it sounds like a problem with the IWE ( Integrated Wheel End ) on that side.
Quick test, when you are in 4H ( or 4L ) does the noise still happen ?
I would say cracked vacuum line to the IWE, or a problem with the vacuum diaphragm in the IWE. You can test by having the motor running in park, and in 2H, and check the vacuum line at the IWE for vacuum. Make sure you test to the vacuum line, not the vent line ( ends in the engine compartment, not hooked to anything )

This is a block diagram of the IWE vacuum system

Testimonial: "great help!"