1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Truck began to overheat in drive thru with A/C maxed.

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Skinny Bob, Sep 22, 2023.

  1. Sep 22, 2023 at 3:55 PM
    #1
    Skinny Bob

    Skinny Bob [OP] Active Member

    Joined:
    Jan 10, 2022
    Member:
    #386885
    Messages:
    39
    Gender:
    Male
    Vehicle:
    2012 TRD Sport 4x4 V6, 5'
    Hi, as the title says, i was in a drive thru with my AC maxed out and the temp gauge began to rise. It hung around the 3/4 mark before i realized due to the fact that the AC began to blow warm and i turned the AC off. As soon as i turned the AC off i watched as the gauge dropped back to normal operating temps. I drove another 30 minutes in stop and go traffic with my AC on with no issues and the temp remained normal. I am currently sitting in the parking lot of my destination for the last 30 minutes with the truck idling at max AC with no issues.
    So what gives? What could have caused the temps to rise so drastically for that short period of time, only for the temps to go back to normal as soon as the AC is turned off? I can’t replicate it just yet but i will update if i do.

    i just finished driving 2.5 hours and its about 100F in TX right now. 0 issues the entire drive, in fact this is the first time anything like this has happened before.

    coolant was flushed at 100k, im sitting at 120k, oil is at 3k miles with zero leaks (penzoil plat high milage), radiator is clean, no coolant leaks.
     
  2. Sep 22, 2023 at 5:51 PM
    #2
    muddog321

    muddog321 Well-Known Member

    Joined:
    Dec 22, 2009
    Member:
    #27973
    Messages:
    1,136
    Gender:
    Male
    FL
    Vehicle:
    09 Tacoma DCSB 4wd TRD Off-Road w/e-locker Pyrite Mica
    TW 1-piece driveshaft with 1310 u-joints All Pro and Budbuilt skid plates OME Dakar rear springs 3" with 5100 5100 front set at 1.75" (3rd groove up) with stock springs Falken Wildpeak A/T3W 265/70R16 2018 TRD Offroad wheels 16x7J with +25mm offset Powerstop rotors with Z36 pads and rebuilt with OEM caliper kit Complete rebuilt rear brakes drums, shoes, springs, wheel cylinders Rebuilt rear diff with Yukon 3.73 ring/pinion Denso 130A rebuilt alternator AGM 24F Battery New OEM idlers and tensioner assembly New AC compressor New PS hose and flushed Walker SS Quiet Flow muffler Denso Iridium long life plugs #3421 (SK20HR11) OEM coolant, cap, and thermostat NAPA CV axles and new seals ECGS bushing Rhino front guard Shortened mud flaps Alziria Black Tail Lights Nilight Headlights X-Bull Traction Boards Maaco full single stage paint job 2023 Nat CV to Knuckle seals 710573 New SKF wheel bearings/hubs BR930978 New Moog stabilizer links K80946 & 948 New MOOG K80819 Suspension Stabilizer Bar Bushing 28mm New Dorman rear wheel bearings using complete axles 926-139 & 140 New Radiator support bushings Dorman 924-267 (front body mounts)
    Hope it was just no airflow into the front grill if behind a Suburban, a common TX problem.
    Others could be thermostat starting to stick but doubt it if OK rest of time. Cap not holding pressure. Fan clutch failing freewheeling. Is the fan shoud on. Any screen over the front grill for bugs that got dirty/clogged.
    Then if your AC pressures low or compressor if starting to fail or the clutch but AC would normally not work then so doubt that. Not an AC guy.
    Make sure air filter intake is clear at pickup in fender maybe paper flew up in there never know then got sucked thru to filter so open and look.
    Long hot line no airflow I hope.
     
  3. Sep 23, 2023 at 8:03 AM
    #3
    2015WhiteOR

    2015WhiteOR Well-Known Member

    Joined:
    Feb 2, 2015
    Member:
    #147773
    Messages:
    1,875
    Gender:
    Male
    Gainesville TX
    The only time I've ever seen something like this is when there was a bubble in the cooling system and once it was "burped" then the system went back to normal.

    But 20k of driving after a coolant flush SHOULD have burped out all the bubbles. If you want to test it out, find a way to incline the nose of the truck (jackstands, driveway, etc), pop the hood and have someone observe the overflow reservoir and then lightly apply throttle (do this after the engine has warmed up enough to open the thermostat). The incline makes the radiator/overflow the highest point in the system and air will migrate there and you'll see it literally burp out the bubble.
     

Products Discussed in

To Top