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Thread: stiff accelerator

  1. #1
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    Default stiff accelerator

    Hi guys my vy has a really bad stiff accelerator, wat I mean is it gets hard to push the accelerator past a certain point at first push. It does this every time the pedal is pushed, I've tried lubricating it but still no difference it's starting to get really annoying as my car is manual it happens every time I change gear. Once I have started to take off its fine but when I stop or change gear and press it again it happens, any help would be appreciated

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    I think your throttle body will be dirty. Take off intake tube and give the butterfly and surrounding area a good clean.

    Let us know how you go. Good luck.

    Hey, I also sent this from my Galaxy S2 using Tapatalk 2!

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    Quote Originally Posted by markbaja View Post
    I think your throttle body will be dirty. Take off intake tube and give the butterfly and surrounding area a good clean.

    Let us know how you go. Good luck.

    Hey, I also sent this from my Galaxy S2 using Tapatalk 2!
    thanks for the swift reply I will give that a go this arvo after work I will let u know how it goes cheers

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    might want to also take the lid off your plenum as the EGR inlet it just on the other side of the throttlebody and that is where most of the caron build up will be

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    I gave the throttle body a good clean but still no difference it seems as if the butterfly is slightly stuck but it's weird when the car is off it moves freely without any problems,

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    just thought that it might be the cruise control module is screwed... disconnect the cruise control cable from the throttlebody and see if that fixes it

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    Quote Originally Posted by Dr HaxZaw View Post
    just thought that it might be the cruise control module is screwed... disconnect the cruise control cable from the throttlebody and see if that fixes it
    it's not that as I have no cruise control

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    the only thing i can think of then is possibly the tps is gone... or it could be a messed up traction control cause i think it does something similar doesnt it?

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    Quote Originally Posted by Dr HaxZaw View Post
    the only thing i can think of then is possibly the tps is gone... or it could be a messed up traction control cause i think it does something similar doesnt it?
    sorry may sound stupid but what is the tps? I was told today that my butterfly may need adjusting but not sure if u can do it without removing the whole throttle body,

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    TPS is Throttle Position Sensor. It's an electronic sensor on the top of the throtle body.
    Mine was 'stiff' too, lol, and a good clean of the throttle body, paying particular attentin to the butterfly fixed it.
    'Ah well, I suppose it had to come to this.'

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    Quote Originally Posted by VYMAD View Post
    TPS is Throttle Position Sensor. It's an electronic sensor on the top of the throtle body.
    Mine was 'stiff' too, lol, and a good clean of the throttle body, paying particular attentin to the butterfly fixed it.
    ok thanks I will give it a go and see how I go hopefully that's all that is wrong with it cheers

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    i had the same problem and giving the throttle body and butterfly a really good clean with carby cleaner and a tooth brush fixed it. i think i also removed it off the motor to clean it better but thats up to you...

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    To the OP. Merely flushing the throttle body with carby cleaner only cleans the visible carbon build-up and gunk. Usually, the butterfly sticks because of carbon build-up on its edge and the only way of removing that properly is to remove the throttle body and spend time scraping the carbon off with a soft metal or hard plastic utensil. Don't use anything that will scratch or damage the edge of the butterfly. The edge is flanged so that it closes off the throttle throat fully and any small indentations or scratches could lead to an erratic idle.

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    Quote Originally Posted by Adds_05 View Post
    i had the same problem and giving the throttle body and butterfly a really good clean with carby cleaner and a tooth brush fixed it. i think i also removed it off the motor to clean it better but thats up to you...
    i tried cleaning it the other day but It didn't seem to change but this morning it seemed to be abit better maybe I should pull it off to give it a really good clean thanks for the info mate

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    Quote Originally Posted by Calaber View Post
    To the OP. Merely flushing the throttle body with carby cleaner only cleans the visible carbon build-up and gunk. Usually, the butterfly sticks because of carbon build-up on its edge and the only way of removing that properly is to remove the throttle body and spend time scraping the carbon off with a soft metal or hard plastic utensil. Don't use anything that will scratch or damage the edge of the butterfly. The edge is flanged so that it closes off the throttle throat fully and any small indentations or scratches could lead to an erratic idle.
    thanks for the info I'm going to pull it off tonight and give it a really good clean as since I cleaned it with a rag and spray the other day but only seems to be getting better today so I will give it ago, cheers I will lets ya's all know how it goes

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    i cant remember off the top of my head but there could be a gasket so just be carefully removing it or grab another one

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    Quote Originally Posted by Adds_05 View Post
    i cant remember off the top of my head but there could be a gasket so just be carefully removing it or grab another one
    yeah I thought there would be I will just grab a new one cheers

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    Check the throttle cable dude, remove it from the throttle body and push/pull the cable, it should slide in and out freely, if not get a new cable.

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    When I cleaned mine, I removed the throtte body, there's about four nuts I think. And yes there's a gasket, but mine stayed in one piece. As Caliber said, the build up of carbon around the EDGE of the butterfly causes the sticky throttle problem.
    I used 'Throttle body and carby cleaner' in a spray can. Use a toothbrush, also like said above, carefuul wth any hard tools you use to scrape with.
    'Ah well, I suppose it had to come to this.'

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    I took the throttle body off and gave it a about an hour of soaking scrubbing it with a tooth brush come up really clean put it back on, it feel perfect for the day but started to slowly happen again now 2 days later it's stiff as again, my cable seems fine so wat else could it be

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    when you took the throttle body off did it feel like it was scraping or rubbing while moving it?? just wondering if the bushes are grabbing or something like that

  24. #24
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    Nah when the tb was off it seemed to move freely it's got me stuffed I might have to buy a second hand tb to see if it makes a different

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    I had the exact same issue.. Every day i would get in my car and almost had to 'prep' my Tb otherwise id get stuck and have to push and the car would jump forward. I tried all your methods and ended up getting a MACE TB. Worked well

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