loud bang when in 4x4 from front left
#1
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put my blazer in 4x4 on a dirt road yesterday and it started banging really loud (you could feel it) from the front left of the truck.. Whats the 1st thing I should check? I just had arm surgery and really don't want to pull more than I have to.
#2
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Banging could be coming from a lot of things. Is it banging in tune with the engine? or speed of the vehicle? If it's the later then it could be a cv shaft or posibly a wheel bearing.
#3
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I would check your Transfer case fluid levels, I had a similar bang and it was due to there being no transfer case fluid in there when I first bought the vehicle. you can almost feel it directly under your feet. Hope this helps.
#4
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yours was ok after adding fluid? Sounds like catastrophic damage was being done.. as soon as I got it back in 2x2 (took almost a minute) it was fine again.
#5
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Well it was running great( with the occasional slip when driving consistantly in 4wd) until I had an unfortunate misdiagnosis involving the transfer case, long story short YES. It did help. When you drain the transfer case fluid drain it into a clear pop bottle. Let it settle and look at how many metal shavings come out. This is a good way to see how much damage has been done. Hope it all works out for you.
#6
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wouldnt it still bang in 2x2 if it was one of those? I crawled under there and don't see anything wrong. how do you check the cv joints?
#7
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I am having the exact same problem with my '98. I'm pretty sure it's the drivers side CV shaft, because you can hear a slight clicking from the left side with the window down. And the banging changes with vehicle speed for me. Any other things to check before I tear into it this weekend would be helpful though.
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