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NP208 noise?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by stock93, Dec 13, 2004.

  1. stock93

    stock93 Registered Member

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    I have an 83 K10 I just put manual hubs on. When in 4 low the transfer case is making noises now. I dont know if it had anything to do with the hubs or not. It doesnt make any noises in 4 high. It pops like its binding up or something. The poping it evenly spaced and happens even if I'm coasting. Any ideas?

    John
     
  2. joez

    joez 1/2 ton status

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    Your not driving arround on the street in 4wd are you?
     
  3. leadvillek5

    leadvillek5 Registered Member

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    kinda sounds like the plastic shift fork buttons in the t case are gone. but i could be wrong my 241 tcase made the same noise and thats what it ended up being. the 208 and 241 are vey similarin designbut the 241 has a better oil pump and a few other things that i cant remeber right now. or it could be the low range gears
     
  4. ColAdo82K5

    ColAdo82K5 1/2 ton status

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    Make sure the front driveshaft isn't rubbing the crossmember. IF it is, look into new bushings to mount the transfer/transmission.
    Blake
     
  5. stock93

    stock93 Registered Member

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    No I'm not driving around on the street in 4. Its doing this off road. The shift buttons would make sense being that its feeling like its not really going into 4low like it used to. I had a leak and lost some fluid as well if thats any help.

    Thanks
    John
     
  6. CyberSniper

    CyberSniper 1/2 ton status Premium Member

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    When I put my lockers in my truck the transfer case would pop like a popcorn machine under hard acceleration or turning in 4 low. It turned out to be a worn out chain.
     
  7. stock93

    stock93 Registered Member

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    I dont think it would do this only in 4 low if it was the chain would it? It doesnt make any noise in 4 hi. I have open diffs front and rear. Thanks for the suggestions.

    John
     
  8. CyberSniper

    CyberSniper 1/2 ton status Premium Member

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    With the planetary multiplying the torque by 2.61 it can cause all sorts of neat things to happen.

    The thing I find strange is that it does it while coasting.
     

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