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Transmission cooler ?

Discussion in 'Towing' started by daddyfarlessa, Aug 26, 2013.

  1. Aug 26, 2013 at 12:24 PM
    #1
    daddyfarlessa

    daddyfarlessa [OP] Active Member

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    Mark
    Monrovia, CA
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    SR5
    I have a 2003 6cyl w/ext cab (2 wheel drive) 63K miles.

    I'm looking to tow a travel trailer (weight - 3998 lbs.)

    Is it recommended to add a transmission cooler to the truck ?

    One more question:

    What is the 'ETC' switch on the dashboard for ?

    Thanx, Mark
     
  2. Aug 26, 2013 at 7:30 PM
    #2
    smd3

    smd3 Well-Known Member

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    I'm guessing it's an auto since you're asking about a transmission cooler. I'd suggest a large one with an integrated fan if you're going anywhere mountainous. I towed a travel trailer of that weight with my '13 and the transmission temps were pretty high.

    Oil cooler wouldn't hurt either.

    I dont have an etc button, but I'm guessing it's traction control.
     
  3. Sep 16, 2013 at 9:31 PM
    #3
    trdtoy

    trdtoy Well-Known Member

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    02 sr5 4x4 auto v6 turbo (sold)
    Turbo with supporting mods and tranny to hold power.
    I had an 02 4x4 auto..... etc button alters when tranny shifts. Said to make towing easier but not much difference imo. Run a large tranny oil cooler. I ran one on mine rated for like 30,000 gvwr and no fan and it would only climb temps if a lot of higher rpm, low gear, slow driving. Get a big one with a fan and you will be good for about anything....
     
  4. Sep 17, 2013 at 7:12 AM
    #4
    StAndrew

    StAndrew Wait for it...

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    Chris
    Hampton Roads, Va
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    Deck Plate Mod; Grey Wire Mod; 1.5" AAL; 1.75" Lift Shackles; Bilstein 5100's; Eiback Coils; LR UCA; Front Diff Drop; Tundra Brake Upgrade; Wheels Offroad Brake Lines; Rear Diff Breather Mod
    Tranny cooler is always recomended. Probably can help even if you dont tow.

    ECT stands for Electronically Controlled Transmission. By switching to Power, it changes the shift points for more power (keeps higher RPMs by delaying shift into higher gears).

    Honestly, I think ECT on power actually shifts normal and ECT on normal abnormally shifts early into higher gears for better MPG's.
     
  5. Sep 17, 2013 at 10:49 AM
    #5
    skytower

    skytower Well-Known Member

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    Dave
    virginia
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    Hitch and wiring, aux back-up light, rear strobe lights, radio and underseat sub.
    If your truck didn't come with a tow package, you'll need the trans cooler, and HD clutch fan.
    The cooler goes on the line that's connected to the top line on the radiator.
     
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