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Bad motor mounts?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Dcruzer, Apr 20, 2024.

  1. Apr 20, 2024 at 2:55 PM
    #1
    Dcruzer

    Dcruzer [OP] Member

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    Hey everyone, im looking to see if the movement from my left side motormou t is normal from linked video. I'm pretty sure that movement is because the motor mount is bad. https://youtu.be/gc3Q1mbUTEk?feature=shared
     
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  2. Apr 20, 2024 at 9:42 PM
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    Captain4x4

    Captain4x4 Well-Known Member

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    Watching. I have yet to get a camera in action, but believe my Taco is suffering from the same issue. Gotta give it a look-over-under tomorrow.
     
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  3. Apr 20, 2024 at 9:49 PM
    #3
    TacoTuesday1

    TacoTuesday1 Well-Known Member

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    Mine went bad. I think they are a shit design to begin with. Replaced with solid off road.

    mine were clunking every time I stopped. I could feel the motor moving. Especially on older years that can put a hole in the frame that’s not easy to repair and wasn’t looking to experience that.

    I don’t think they’re that cheap either. And for the difficulty of the job (it’s not a walk in the park) I wasn’t looking to go through all of that wrenching just to put another pair of cardboard.
     
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  4. Apr 21, 2024 at 12:40 AM
    #4
    GilbertOz

    GilbertOz Driver

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    How many miles, holmse?
     
  5. Apr 21, 2024 at 5:12 AM
    #5
    Dcruzer

    Dcruzer [OP] Member

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    83,000 miles. Unfortunately my truck was rear-ended in August and totaled based on damage. I do think the jolt from the impact damaged the mounts. I'd recently replaced the shocks(bad bushing), front wheel bearing (humming), brakes and rotors, drain and fill transmission, dried out ujoints, bad carrier bearing, alternator, sparkplugs. I need to record the right side next and see what that movement looks like.
     
  6. Apr 21, 2024 at 9:18 AM
    #6
    TacoTuesday1

    TacoTuesday1 Well-Known Member

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    I mean you can try OE if you want. Or other brands like Martec and see how you like it. Up to you.

    just be advised it’s a bitch of a job if the truck is 4x4 with all that other parts in the way from front diff axles etc

    depending on location
    And popularity of solid off road
    Might not be hard for you to find a truck with them go for a ride see how they feel.

    if it’s not thudding/clunking when you come to a stop then it’s probably fine
    For example. Worn. Switching from on gas rotating it one way, to off gas and braking, making a clunk
    or rev under load and watch for movement under hood but you kinda already did that

    mine didn’t vibrate it was just the thudding basically
     
    Last edited: Apr 21, 2024
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  7. Apr 21, 2024 at 9:59 AM
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    Jimmyh

    Jimmyh Well-Known Member

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    Looks like normal movement to me. There is a reason they are made from rubber.
     
    Last edited: Apr 21, 2024
  8. Apr 21, 2024 at 11:31 AM
    #8
    Jimmyh

    Jimmyh Well-Known Member

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    I've never seen a motor mount or transmission mount that needed replacement unless it had broken or unbonded the rubber between the metal mounting plates.

    Put a jack under the motor and try and lift it while watching the mounts to see if they separate. If they do replace them. Short of a recent wreck or impact I doubt the mounts are bad.

    Another way we used to test the mounts is to place it in drive gear engine running and hold the brake hard and rev the engine when watching look for excessive lifting then do the same on the other mount by placing it in reverse gear and reving... That should reveal a broken mount.

    Did you have any symptoms or just happened to notice the slight movement?
     
  9. Apr 21, 2024 at 11:35 AM
    #9
    Gunshot-6A

    Gunshot-6A Prime Beef

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    Further up the page he mentions getting rear ended, so could explain it. However, do agree with you that *some* motor movement is totally normal.
     
  10. Apr 21, 2024 at 11:39 AM
    #10
    Jimmyh

    Jimmyh Well-Known Member

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    Yeah I saw that and that is why I edited my post above. It would have to be a hell of a rear end collision (IMO) to break the motor mounts. From his video I didn't see anything excessive as far as movement goes. Revving in gear will show you for sure what is going on, or not.
     
  11. Apr 21, 2024 at 12:17 PM
    #11
    GilbertOz

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    "Some" motor mount movement, esp. on a >75K mile or more truck, is normal. The stock mounts are intentionally relatively "smooshy" to help reduce NVH & increase vehicle occupant comfort (for those who think in those terms.)

    Haven't seen anyone attempt to quantitatively measure engine mount flex. I guess some ways to nerd out on that would be to rig up -- what, some kind of robust dial-indicator gauge & then take video of that under different driving & revving conditions and compare the dial readings?

    A more robust but $$ approach would involve attaching purpose-specific multi-axis vibration sensors directly to engine block & graphing those over time.
     
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  12. Apr 21, 2024 at 12:50 PM
    #12
    Dcruzer

    Dcruzer [OP] Member

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    Yeah, the movement seen in the video I'm feeling thst movement in the cab. So I'm trying to figure out why I'm feeling that movement. That's why I filmed the mount specifically. When on the road I feel it start to hop as if one of the mounts is bad. The truck tracks straight, wheel are a year old. Tires are balanced. At higher speeds 70mph. This hoping is very minimal. I'm thinking with the significant load increase at this speeds if it's the Mount it's under enough tension that it can no longer hop on the road.
     
    Last edited: Apr 21, 2024
  13. Apr 21, 2024 at 12:53 PM
    #13
    Dcruzer

    Dcruzer [OP] Member

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    Thanks no it's a 2wd I seem to have plenty of space to get these out when the time comes to replacing them.
     
  14. Apr 21, 2024 at 3:00 PM
    #14
    Jimmyh

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    Try what I suggested above with having someone revving the engine with it in gear ( forward and reverse ) while you watch the engine. If a mount is broke you will be able to see the engine rise up to the left or right dependent on the gear selected forward or reverse.
     
  15. Apr 21, 2024 at 8:35 PM
    #15
    TacoTuesday1

    TacoTuesday1 Well-Known Member

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    yes. Might be possible solo with hood open in seat peeking through the hood gap watching engine cover for movement - maybe
     
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  16. Apr 22, 2024 at 3:11 PM
    #16
    Dcruzer

    Dcruzer [OP] Member

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    Alright here are some videos of the suggestions you gave to me for checking the movement. Let me know what you think on that movement. Another thing is I do fell the bouncing when I start and turn off the the engine.
    https://youtu.be/DyVywQi5gDA?feature=shared
    https://youtu.be/7oA6OONuAY8?feature=shared
    https://youtu.be/7p_9rzXHltM?feature=shared
     
  17. Apr 22, 2024 at 9:26 PM
    #17
    TacoTuesday1

    TacoTuesday1 Well-Known Member

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    those are good videos. Looks like you brake torqued it in gear right too.

    I mean I don’t know for sure. Would a new stock be better? Don’t know.
    That’s the thing. Who likes stock parts. Sometimes genuine is best. Sometimes it’s bottom of the barrel. Depends on the part.

    At least with mine given the age and miles condemning them was easy.
    The idea behind a better one is well, they’re better. Not that I’m saying what to do. I’m not a salesman affiliated with any brand.

    look at the Audi community. Mounts fail as early as 50k. I’ve replaced plenty.
    Do enthusiasts like the stock ones there? No not at all. They always switch to something better.
     
    Dcruzer[QUOTED][OP] likes this.
  18. Apr 22, 2024 at 10:14 PM
    #18
    Dcruzer

    Dcruzer [OP] Member

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    Yeah i did both reverse and drive. Im still unsure if these mounts are bad. I appreciate the feedback here, ill probably stay with stock, when i get them changed, I plan on my son driving this truck in 7 yrs. :) so I need to keep the maintenance simple and stock who be the way to go.
     
  19. Apr 22, 2024 at 10:24 PM
    #19
    TacoTuesday1

    TacoTuesday1 Well-Known Member

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    Idk how they compare
    If there’s other ones. MarTec came out with some.

    not sure if stock can be modified better like adding urethane fill gaps reduce flex etc

    IMG_5526.jpg

    these might even be the same price or cheaper than stock

    https://martecnv.com/products/p/1gr-fe-polymounts
     
  20. Apr 23, 2024 at 7:26 PM
    #20
    Jimmyh

    Jimmyh Well-Known Member

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    Your motor mounts are just fine. They are doing what they are designed to do: absorb the shock of the engine torque. There is very little clearance between the fan shroud and the fan blades. IF one of the mounts were broken loose, the fan would hit the shroud.

    I'd bet that if you do change them with new mounts, the engine will move just as it does here with the old mounts.

    I've seen many trucks that have a bounce feeling in the body and it can usually be tracked down to a defective tire or a balance issue.
     
    Last edited: Apr 24, 2024

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