Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

AT Trans pressure?

Discussion in 'The Garage' started by CHEVY 4WD, Feb 20, 2004.

  1. CHEVY 4WD

    CHEVY 4WD 1/2 ton status

    Joined:
    May 14, 2002
    Posts:
    1,773
    Likes Received:
    0
    Location:
    Florida
    What is the higest the psi you should ever get out of a automatic transmission(700R4 in my case)?
     
  2. big83chevy4x4

    big83chevy4x4 3/4 ton status

    Joined:
    Mar 22, 2002
    Posts:
    6,587
    Likes Received:
    0
    Location:
    Sheridan, Michigan
    326 is the absolute highest you should ever see. thats in reverse at full TV with a certain wiring setup
     
  3. heavy4x4

    heavy4x4 1/2 ton status

    Joined:
    Aug 28, 2002
    Posts:
    3,270
    Likes Received:
    0
    Location:
    Delafield, Wisconsin
    What's the normal range of pressure the cooling lines see under proper setup/normal driving? I've always wondered that...ever since I put on my aftermarket cooler with the rubber hose and hose clamps.
     
  4. big83chevy4x4

    big83chevy4x4 3/4 ton status

    Joined:
    Mar 22, 2002
    Posts:
    6,587
    Likes Received:
    0
    Location:
    Sheridan, Michigan
    its about 50 to 150, depending on the throtle position
     
  5. R72K5

    R72K5 Banned

    Joined:
    Mar 5, 2001
    Posts:
    8,905
    Likes Received:
    0
    Location:
    central IL
    holy crap, they put out that much for real ??

    crap.

    i better quit using hose clamps and rubber hose pieces then, hmm,,.,
     
  6. big83chevy4x4

    big83chevy4x4 3/4 ton status

    Joined:
    Mar 22, 2002
    Posts:
    6,587
    Likes Received:
    0
    Location:
    Sheridan, Michigan
    yea i know how that goes, i have to replace mine in the spring when it warms up. /forums/images/graemlins/woot.gif
     
  7. heavy4x4

    heavy4x4 1/2 ton status

    Joined:
    Aug 28, 2002
    Posts:
    3,270
    Likes Received:
    0
    Location:
    Delafield, Wisconsin
    Well, I guess that could explain why one of my hoses blew off about a year ago. Scared the crap out of me. I look behind me to a cloud of smoke and then my tranny starts slipping...thought it bit the dust. I come to find out the connection on the return line came off and I got tranny fluid all over my engine compartment - the tranny fluid on the headers is what was smoking. Transmission fluid makes a nice, shiny cleaner. /forums/images/graemlins/woot.gif
     
  8. CHEVY 4WD

    CHEVY 4WD 1/2 ton status

    Joined:
    May 14, 2002
    Posts:
    1,773
    Likes Received:
    0
    Location:
    Florida
    well my main reason for asking this was because Im still dealing with my new trans... and today I was backing down the road in reverse at about 1500RPM then put it in neutral then Overdrive and it barley moved /forums/images/graemlins/eek.gif then I saw the puddle, I blew off one of my hose to tubing things the weird part is they worked fine on the last trans... oh yea and theres ALOT of brand new ATF all over my motor /forums/images/graemlins/thumb.gif
     
  9. big83chevy4x4

    big83chevy4x4 3/4 ton status

    Joined:
    Mar 22, 2002
    Posts:
    6,587
    Likes Received:
    0
    Location:
    Sheridan, Michigan
    yea those psi's are at 1000 rpm /forums/images/graemlins/yikes.gif
     
  10. Triaged

    Triaged 1/2 ton status

    Joined:
    Feb 21, 2001
    Posts:
    3,808
    Likes Received:
    0
    Location:
    CA (LA/OC area)
    [ QUOTE ]
    ...the tranny fluid on the headers is what was smoking...

    [/ QUOTE ]

    At least your's didn't go up in flames like mine did /forums/images/graemlins/angryfire.gif /forums/images/graemlins/angryfire.gif
     
  11. heavy4x4

    heavy4x4 1/2 ton status

    Joined:
    Aug 28, 2002
    Posts:
    3,270
    Likes Received:
    0
    Location:
    Delafield, Wisconsin
    Yeah, I wasn't aware that tranny fluid would go up in flames in contact with headers until after the fact. I sure am glad mine didn't do that. /forums/images/graemlins/eek.gif
     
  12. dyeager535

    dyeager535 1 ton status Premium Member

    Joined:
    Dec 13, 2000
    Posts:
    26,977
    Likes Received:
    189
    Location:
    Roy WA
    Which is the reason I'll never use rubber on tranny lines where I don't have to. I know there are arguments for and against, but BTDT, not EVER going to risk an engine fire because of rubber.
     

Share This Page