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

I 4 engine knocking when hot ?

Discussion in '4 Cylinder' started by Ghost Rider, Jun 13, 2010.

  1. Jun 13, 2010 at 5:46 PM
    #1
    Ghost Rider

    Ghost Rider [OP] Well-Known Member

    Joined:
    Oct 31, 2009
    Member:
    #25237
    Messages:
    97
    Gender:
    Male
    Quebec Canada
    Vehicle:
    Tacoma Sr5 4x4
    When my engine is hot and I stop at a red light. The engine rpm go down to about 700 rpm and the engine is running like a diesel !!! Like Knocking ??? at time the engine rpm go up a litle bit and it stop 1000 rpm. When it go down again the noise is going back. If I accelerate it make like a ratteling sound like a small diesel engine ??? Is it normal ???:eek: (2010 Tacoma sr5 I4)
    Everyting else is fine the truck go whell and all







    Scuse My baddddddddd english :cool:
     
  2. Jun 13, 2010 at 5:50 PM
    #2
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,897
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    No, it's not normal. I would suggest hitting the dealer ASAP and use your warranty.

    What octane are you using?
     
  3. Jun 13, 2010 at 5:53 PM
    #3
    Ghost Rider

    Ghost Rider [OP] Well-Known Member

    Joined:
    Oct 31, 2009
    Member:
    #25237
    Messages:
    97
    Gender:
    Male
    Quebec Canada
    Vehicle:
    Tacoma Sr5 4x4
    Normal gas 87 i think !!!
     
  4. Jun 13, 2010 at 5:54 PM
    #4
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,897
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    Did this just start happening?
     
  5. Jun 13, 2010 at 5:55 PM
    #5
    Ghost Rider

    Ghost Rider [OP] Well-Known Member

    Joined:
    Oct 31, 2009
    Member:
    #25237
    Messages:
    97
    Gender:
    Male
    Quebec Canada
    Vehicle:
    Tacoma Sr5 4x4
    The engine run smouth, it push fine but when hot it does this bizarre diesel like sound ??? The truck as only 3300 km
    Nobody as the same noise :eek:
     
  6. Jun 13, 2010 at 5:57 PM
    #6
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,897
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    Not that is not normal. Get to the dealer ASAP
     
  7. Jun 13, 2010 at 5:59 PM
    #7
    Ghost Rider

    Ghost Rider [OP] Well-Known Member

    Joined:
    Oct 31, 2009
    Member:
    #25237
    Messages:
    97
    Gender:
    Male
    Quebec Canada
    Vehicle:
    Tacoma Sr5 4x4
    I notice it last week when I was stuck in traffic. Engine hot rpm go down 700 rpm and clac clac clac clac clac....:confused:
     
  8. Jun 13, 2010 at 6:00 PM
    #8
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,897
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    Did the CEL come on? When you say "hot", do you mean it was over-heating or was it at operating temperature?
     
  9. Jun 13, 2010 at 6:17 PM
    #9
    Ghost Rider

    Ghost Rider [OP] Well-Known Member

    Joined:
    Oct 31, 2009
    Member:
    #25237
    Messages:
    97
    Gender:
    Male
    Quebec Canada
    Vehicle:
    Tacoma Sr5 4x4
    It was at at operating temperature
    Just when out and listen at the engine. It run like a baby...
    Only when running for a long time and when it's hot outside it does it. The truck is not overheating. Weirdddddd
     
  10. Jun 13, 2010 at 8:49 PM
    #10
    Hootbro

    Hootbro Omnipotent

    Joined:
    Jun 22, 2009
    Member:
    #18789
    Messages:
    347
    Gender:
    Male
    Delaware
    Vehicle:
    2009 Tacoma Regualr Cab 4x4 2.7L
    I would turn the A/C off and see if it goes away. If so, you may just have a noisy A/C compressor clutch.

    Mine is a little noisy at idle and makes what some would think is a dieseling sound.
     
  11. Jun 14, 2010 at 4:49 PM
    #11
    TroutBum

    TroutBum Well-Known Member

    Joined:
    Aug 29, 2008
    Member:
    #8871
    Messages:
    255
    Gender:
    Male
    First Name:
    Mike
    Michigan
    Vehicle:
    06 SR5 Access Cab 4x4, 17 TRD Sport 6 MT
    Leer 100R
    I notice the same thing out of mine - window down at a drive-thru with the AC on. Check that first, might not be an issue.

    Mike
     
  12. Jun 14, 2010 at 7:02 PM
    #12
    numbah57

    numbah57 GIVE THE MALL A BREAK...WHEEL THAT SHIT

    Joined:
    Oct 11, 2009
    Member:
    #24160
    Messages:
    3,460
    Gender:
    Male
    First Name:
    kahai
    Maui, Hawaii
    Vehicle:
    09 tacoma 2.7 Beaten not Babied
    URD ARB G2 PELFREY BAMF LCE AFE
    Yup...try turning of the AC mines does the same.
     
  13. Jun 14, 2010 at 7:09 PM
    #13
    mattcombs

    mattcombs Well-Known Member

    Joined:
    Dec 23, 2009
    Member:
    #28049
    Messages:
    236
    Gender:
    Male
    First Name:
    matt
    hazard kentucky
    Vehicle:
    SR5 tacoma 4wd
    3in revtec lisf westin step bars and westin bull bar and some other odds and ends
    sometimes the throwout bearing will wear and do this also and when u push in the cluth it stops .while running the ac its add more engine stress and makes it louder . .id get it checked out tho your truck may have a faulty throwout bearing it should b quick with ur little mileage
     
  14. Jun 15, 2010 at 9:40 AM
    #14
    Ghost Rider

    Ghost Rider [OP] Well-Known Member

    Joined:
    Oct 31, 2009
    Member:
    #25237
    Messages:
    97
    Gender:
    Male
    Quebec Canada
    Vehicle:
    Tacoma Sr5 4x4
    Thanks I'l check the next time turning the AC off.
     
To Top