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Thread: Throttle response

  1. #1
    Regular Member old cruiser's Avatar
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    Default Throttle response

    Notice from time to time on motorway , that if I come off throttle then back on fairly quickly as it were, I sometimes get a glitch in response, as if it misses a beat , mainly noticeable when in third gear; did do the AirBox Mod' and put the shorter VXR intake pipe on and also blanked off the EGR valve doing all these has improved the car from what it was and got rid of the hesitancy I did have, particularly in top gear , but now beginning to wonder if I would be better off putting the longer intake back on or not, what do you reckon guys, just wanted the advise before fitting it back on (or not as the case may be)and wrecking my knuckles again!!
    Cheers Pete

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    Regular Member Readster's Avatar
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    Maybe the hesitation you describe is down to faulty injectors more than the airbox.
    Have you tried a fuel system cleaner ?
    Just a though..

  3. #3
    Regular Member old cruiser's Avatar
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    Quote Originally Posted by Readster View Post
    Maybe the hesitation you describe is down to faulty injectors more than the airbox.
    Have you tried a fuel system cleaner ?
    Just a though..
    Good point mate, haven't recently, last time I used some redex, but that was nearly a year ago , so maybe time for some more or something similar.
    Cheers Pete

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    Regular Member Readster's Avatar
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    Be interested to see how you get on.
    I put the airbox back to standard after my Vec's throttle assembly shambles.
    I still don't know if its a tangible benefit to remove the plastic shield in the a'box.
    How did you blank off the EGC valve?

  5. #5
    Regular Member ghostrider's Avatar
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    Vehicle : 2.0l CDTi Bi-Turbo Insginia Sports Tourer

    Trim : Vx Line Nav Sri

    Engine : 2.0

    Year : 2014

    Default

    Quote Originally Posted by old cruiser View Post
    also blanked off the EGR valve
    Please let us know

  6. #6
    Regular Member old cruiser's Avatar
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    Quote Originally Posted by Readster View Post
    Be interested to see how you get on.
    I put the airbox back to standard after my Vec's throttle assembly shambles.
    I still don't know if its a tangible benefit to remove the plastic shield in the a'box.
    How did you blank off the EGC valve?
    Used a blanking plate with new gasket and fitted a cheater (which mimics the egr to stop mil light coming on) purchased cheater from Vocky on Z22SE site, cheater I think is only needed on the Z22SE engine, I did find that by removing the trumpet in air box made a difference to mine for sure in that it smoothed out the rev range. Getting back to injector cleaner I think it might have been Greased lightening fuel treatment I used as opposed to redex!
    Cheers Pete

  7. #7
    Regular Member Readster's Avatar
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    Default

    That'll save a lot of grief not having a EGC valve Pete.
    Too many gizmos

    I may redo the AB mod, see how I get on...guess I don't want to think that playing about wrecked the throttle assembly that's all...

    I got the injectors on a Ford diesel cleaned by a diesel specialist who also tested them. That may be another option to consider.

    Cheers
    John

  8. #8
    Regular Member old cruiser's Avatar
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    Quote Originally Posted by Readster View Post
    That'll save a lot of grief not having a EGC valve Pete.
    Too many gizmos

    I may redo the AB mod, see how I get on...guess I don't want to think that playing about wrecked the throttle assembly that's all...

    I got the injectors on a Ford diesel cleaned by a diesel specialist who also tested them. That may be another option to consider.

    Cheers
    John
    You're right there John about too many Gizmos, the EGR is not a requirement in this country anyway and one of the things Vx dealers do is to remove the EGR e.g on the Z22YH engine for those that are playing up and do as I did and blank it off and reprogram the ECU to disable the Valve and was removed completely as of May '06 on these engines!!. If you do the airbox mod' make sure it's the trumpet part under the filter that you remove and not the one in the upper lid as this one can affect/ damage the maf sensor and BTW thanks for the heads up on the Injector cleaning.
    Cheers Pete

  9. #9
    Regular Member rushy's Avatar
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    Engine : Z22SE (2.2 Petrol)

    Year : 2004

    Mileage : 137000

    Default

    The hesitancy is mapped in I think Pete. Its not like the old cable actuated throttle. It was the first thing I noticed when I bought mine. If you have the sport button it alters it to a more responsive pedal along with the steering and stiffens the suspension.

    Quote Originally Posted by Readster View Post
    How did you blank off the EGR valve?
    I'll be doing a How 2 for blanking the EGR guys. It only works on the 2.2 petrol though.

  10. #10
    Regular Member old cruiser's Avatar
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    Quote Originally Posted by rushy View Post
    The hesitancy is mapped in I think Pete. Its not like the old cable actuated throttle. It was the first thing I noticed when I bought mine. If you have the sport button it alters it to a more responsive pedal along with the steering and stiffens the suspension.


    I'll be doing a How 2 for blanking the EGR guys. It only works on the 2.2 petrol though.
    Ah right that makes me feel a bit better about, if I go back on the throttle gently it's ok so must keep doing that I think! so basically fitting the longer intake back on won't really make a difference to this issue then, so may just as well leave it with the shorter one on I guess.
    Cheers Pete

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