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  1. #1
    Formally known as "Steve" Super_Sedan's Avatar
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    Still Stumped ...

    So I do NOT need a new catalytic convertor ... My Del Sol still hesitates and lacks power throught the RPM band, but since its been cold out I noticed something different.

    A few weeks ago when the weather was warmer my car would always after a few minutes, when the motor would reach its normal engine temp, (about half way on the temp gauge) hesitate, lack power and get bad gas mileage ... but only after the engine warmed up. After initial start-up it does not do it.

    Ever since it has been super cold out I noticed something different ...

    During the 20 minute drive to work in the mornings since its been cold, the needle on the temp gauge will barely sneak past the "C" or sometimes almost never move and the car will not have any problems at all. No hesitation or lack of power.

    Knowing this now, I came to the conclusion that the cars only runs like crap under load when the motor gets warm ... never when its cold. Which eliminates it being the catalytic convertor.

    Facts: Hesitation/lack of power when:
    Motor is warm
    Under load
    Throught RPM band
    Really bad at low range in the RPM band

    Any other thoughts?!?!?! Im stumped.

    BTW, my cap/rotor/plugs/wires and fuel filter were all changed and problem still persists ...
    13.2:1 H2B ITB EG

    and, btw ... I dont not have any hispanic decent in me.

  2. #2
    Automotive Moderator MufflerBearings69's Avatar
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    Shot in the dark, but on older Nissans, I would look at the temp sender that went to the ECU.

    I dont know Hondas or how they are set up regarding that but just a thought to ponder.
    aka Tattooey the Rat
    Quote Originally Posted by TC527 View Post
    iBUILT is a way of life cuz.

    For those days when "The Man" gets you down no matter how many zillion HP you threw down on the dyno...
    ScribTECH

  3. #3
    Formally known as "Steve" Super_Sedan's Avatar
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    no CEL's either ...

    Ill check that out when I go to the garage in a few ...
    13.2:1 H2B ITB EG

    and, btw ... I dont not have any hispanic decent in me.

  4. #4
    Formally known as "Steve" Super_Sedan's Avatar
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    i bet its going to be sooooo easy and right under my nose when i finally figure it out!!!!
    13.2:1 H2B ITB EG

    and, btw ... I dont not have any hispanic decent in me.

  5. #5
    OF Senior Member B-Ran's Avatar
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    Have you checked the timing(belt and ignition)?

  6. #6
    is a white guy ThatWhiteGuy's Avatar
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    Coolant temp sensor if it is not "seening" correct temp it will think it is really cold and ricken up a lot just did this to a car other day on a car found with lab scope
    Don't call 911
    grab the 1911 w/10 round wilson combat mag

    Quote Originally Posted by bigmike View Post
    Doug is an all around worthless, ignorant, douche...

  7. #7
    Video/Movie Guy Jspecwhore's Avatar
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    Quote Originally Posted by 1lowSi View Post
    Coolant temp sensor if it is not "seening" correct temp it will think it is really cold and ricken up a lot just did this to a car other day on a car found with lab scope
    true, even if that sensor gets wet by water or coolant, the car wont even start. experienced that first hand, had to pat it down with a microfiber towel then wait til it dried off fully
    properly functioning vehicle> JDM!!!

    If theres one thing tuning your import car can teach you, its that knowing how somthings works is more valuable than simply knowing that it does, and infinitely more valuable than worrying that it wont! -QFT

  8. #8
    Automotive Moderator MufflerBearings69's Avatar
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    on the nissans they werent that sensitive- but they also never tripped codes as it was never out of range- just never went across the normal range, if that makes sense.
    aka Tattooey the Rat
    Quote Originally Posted by TC527 View Post
    iBUILT is a way of life cuz.

    For those days when "The Man" gets you down no matter how many zillion HP you threw down on the dyno...
    ScribTECH

  9. #9
    is a white guy ThatWhiteGuy's Avatar
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    Take a ohm reading across just the 2 pins in the coolant sensor let us know what reading u get


    ^ it was a nissian it thought it was -40deg and was only tripping a o2 code for being dumb rich
    Last edited by ThatWhiteGuy; 12-08-2010 at 08:11 PM.
    Don't call 911
    grab the 1911 w/10 round wilson combat mag

    Quote Originally Posted by bigmike View Post
    Doug is an all around worthless, ignorant, douche...

  10. #10
    Formally known as "Steve" Super_Sedan's Avatar
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    I wont have access to an ohm tester untill 2morrow. I reset the ECU and pulled a couple plugs and cleaned them ... I will find out 2morrow if that helped any
    13.2:1 H2B ITB EG

    and, btw ... I dont not have any hispanic decent in me.

  11. #11
    Automotive Moderator MufflerBearings69's Avatar
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    Quote Originally Posted by 1lowSi View Post
    Take a ohm reading across just the 2 pins in the coolant sensor let us know what reading u get


    ^ it was a nissian it thought it was -40deg and was only tripping a o2 code for being dumb rich
    Id imagine so if it was that far out. lol
    aka Tattooey the Rat
    Quote Originally Posted by TC527 View Post
    iBUILT is a way of life cuz.

    For those days when "The Man" gets you down no matter how many zillion HP you threw down on the dyno...
    ScribTECH

  12. #12
    Off-Road Pro n2oef's Avatar
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    coolant temp sensor..wont throw a cel unless its shorted but will give the symptoms u have
    Quote Originally Posted by 99Slobra View Post
    I'm sorry I don't speak field worker....Can I get translator?
    Quote Originally Posted by mustangnick88 View Post
    for some reason only 5% of honda owners are mentally capable of making there cars anything but slow,loud, and uglier.

  13. #13
    Living in a Honda Sphere dropcivic's Avatar
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    Quote Originally Posted by n2oef View Post
    coolant temp sensor..wont throw a cel unless its shorted but will give the symptoms u have
    Thats it. The ECU and the gauge sensor are two different sensors. My first look would be at the TW(Cooltant temp) sensor
    2007 Dodge ram hemi sport 4x4-superchips program, 125 shot of nitrous, airraid intake, 180 thermostat, banks exhaust
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    Quote Originally Posted by DIESEL View Post
    Ill smack the white back in her

  14. #14
    Formally known as "Steve" Super_Sedan's Avatar
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    What about the ignitor? When I shut the motor down and restart it when its still warm it doesnt want to start right away ...
    13.2:1 H2B ITB EG

    and, btw ... I dont not have any hispanic decent in me.

  15. #15
    Formally known as "Steve" Super_Sedan's Avatar
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    are single cam ignitors all the same?
    13.2:1 H2B ITB EG

    and, btw ... I dont not have any hispanic decent in me.

  16. #16
    Off-Road Pro n2oef's Avatar
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    change the temp sensor-its like $15 new.pretty sure its what's causing your issue.it can also be tested to see if its working properly with an ohm meter,but thats probably gonna cost more than $15 to buy one just to test it!
    Quote Originally Posted by 99Slobra View Post
    I'm sorry I don't speak field worker....Can I get translator?
    Quote Originally Posted by mustangnick88 View Post
    for some reason only 5% of honda owners are mentally capable of making there cars anything but slow,loud, and uglier.

  17. #17
    Automotive Moderator MufflerBearings69's Avatar
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    where people fail with testing them is they dont look for a change with the coolant temp changing

    typically, including all of them I have changed for others, they probe it and get a reading and call it a day. Should vary with temp or its junk
    aka Tattooey the Rat
    Quote Originally Posted by TC527 View Post
    iBUILT is a way of life cuz.

    For those days when "The Man" gets you down no matter how many zillion HP you threw down on the dyno...
    ScribTECH

  18. #18
    is a white guy ThatWhiteGuy's Avatar
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    Quote Originally Posted by Super_Sold' View Post
    When I shut the motor down and restart it when its still warm it doesnt want to start right away ...

    i had a Headgasket do that
    Don't call 911
    grab the 1911 w/10 round wilson combat mag

    Quote Originally Posted by bigmike View Post
    Doug is an all around worthless, ignorant, douche...

  19. #19
    Off-Road Pro n2oef's Avatar
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    i used to know the correct redings off the top of my head a few years ago...since i hopped out the honda game awhile ago i have to look everything up now!!
    Quote Originally Posted by 99Slobra View Post
    I'm sorry I don't speak field worker....Can I get translator?
    Quote Originally Posted by mustangnick88 View Post
    for some reason only 5% of honda owners are mentally capable of making there cars anything but slow,loud, and uglier.

  20. #20
    5"x7" Papparazzi's Avatar
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    Quote Originally Posted by MufflerBearings69 View Post
    they probe it


    Temp sensor bro
    Quote Originally Posted by Aloysius View Post
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