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95 4 cyl Tacoma bogging down

Discussion in 'Technical Chat' started by webb323, Jul 22, 2010.

  1. Jul 22, 2010 at 11:32 AM
    #1
    webb323

    #1
    webb323 [OP] Well-Known Member

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    sorry if this post is somewhere else, but ive looked and im about to go crazy trying to figure this out. My truck does this the majority of the time. When i start it up and try to accelerate it bogs down really bad. Then when im going down the road it will just fall on its ass all of the sudden. Its not the tps, mas, plugs, plug wires, dis cap, rotary button, bad gas, throttle body, air filter, stopped up intake, or my muffler. Any more suggestions? Ive tried so many things and cant figure it out. Maybe the EGR vavle getting turned on at the wrong time?

    Thanks
     
    webb323, Jul 22, 2010
    #1
  2. Jul 22, 2010 at 11:37 AM
    #2
    98tacoma27

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    98tacoma27 is going full "SANDWICH" Moderator

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    Some stuff. Not a lot, just some.
    What motor? 2.7l I presume?
     
    98tacoma27, Jul 22, 2010
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  3. Jul 22, 2010 at 4:44 PM
    #3
    webb323

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    webb323 [OP] Well-Known Member

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    yes it is the 2.7 sorry i should have specified and ive check all the hoses for vacuum leaks too. thanks for the replies.

    this tacoma is giving me so much more trouble than any toyota ive ever seen
     
    webb323, Jul 22, 2010
    #3
  4. Jul 22, 2010 at 5:28 PM
    #4
    98tacoma27

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    98tacoma27 is going full "SANDWICH" Moderator

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    Some stuff. Not a lot, just some.
    I think you should look into a new fuel filter and a compression test.
     
    98tacoma27, Jul 22, 2010
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  5. Aug 1, 2010 at 10:56 PM
    #5
    webb323

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    webb323 [OP] Well-Known Member

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    the fuel filter wasn't it and the compression is great. maybe the computer is just losing it?
     
    webb323, Aug 1, 2010
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  6. Aug 1, 2010 at 11:01 PM
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    ktmrider

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    ktmrider Senior Member

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    cats getting clogged up, and or use some sea foam?
     
    ktmrider, Aug 1, 2010
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  7. Aug 1, 2010 at 11:29 PM
    #7
    InfidelTaco

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    InfidelTaco No better friend,No worse enemy...

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    I agree. compression check. u may have a dying motor...
     
    InfidelTaco, Aug 1, 2010
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  8. Aug 2, 2010 at 6:46 AM
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    webb323

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    webb323 [OP] Well-Known Member

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    the cat is interesting because the code is on for it and the cat is bad, but ive took it off and you can see right through it. could it still be it? and i hope its not a dying motor haha at 118,000 ill be outraged
     
    webb323, Aug 2, 2010
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  9. Aug 2, 2010 at 6:47 AM
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    98tacoma27

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    98tacoma27 is going full "SANDWICH" Moderator

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    Some stuff. Not a lot, just some.
    Do you mean the cat is empty? No catalyst material?

    Which code? 420?

    You could have a bad AFR senosr too. That will sometimes casue the code for the CAT to pop.
     
    98tacoma27, Aug 2, 2010
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  10. Aug 3, 2010 at 8:03 AM
    #10
    webb323

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    webb323 [OP] Well-Known Member

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    i cant remember the exact code but it says catalyst system failure. and the cat has everything in it and its not stopped up so i dont know.
     
    webb323, Aug 3, 2010
    #10
  11. Aug 3, 2010 at 8:10 AM
    #11
    98tacoma27

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    98tacoma27 is going full "SANDWICH" Moderator

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    Some stuff. Not a lot, just some.
    Yes, it could be the CAT even though it isn't clogged. There are several other things to check; exhaust leaks before the CAT. Look at the Exhaust manifold for cracks, look at the joints for leaking exhaust, look around the sensors and the CAT itself. If you don't find any leaks, then the only way left to troubleshoot it is to start throwing parts at it.
     
    98tacoma27, Aug 3, 2010
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  12. Aug 3, 2010 at 1:12 PM
    #12
    webb323

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    webb323 [OP] Well-Known Member

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    yeah i have checked for exhaust leaks i think im going to test the fuel pump and see if it is the problem with it being intermitent its hard to find but then ill take the CAT off and see how it goes
     
    webb323, Aug 3, 2010
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  13. Sep 8, 2010 at 5:19 PM
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    80h4thephaze

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    80h4thephaze New Member

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    Any news on it?
     
    80h4thephaze, Sep 8, 2010
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