Jerky when crusin' - Page 3
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This is a discussion on Jerky when crusin' within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Originally posted by RLsChMiDt it's the AWD ???????????????????????????????????????????...

  1. #31
    Registered User Blue2004WRX's Avatar
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    Originally posted by RLsChMiDt
    it's the AWD
    ???????????????????????????????????????????
    --2004 WRB WRX--
    Still way too stock.

    Originally posted by MidnightFLAT4
    I like A/C for the sole reason that it makes the idle sound meaner.

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  3. #32
    Registered User droogie's Avatar
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    don't want to change that.
    '04 WRB premium package.
    Gutted Stock up, Godspeed dp, Cobb AccessPort (Stage 2), Omori Turbo Guage, Omori EGT Guage, Falken 512's

  4. #33
    Registered User AREITU's Avatar
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    Maybe it's the car in closed loop. Rich-lean-rich-lean-rich-lean...

  5. #34
    Registered User pityr's Avatar
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    My lumpy idle came back after a few thousand miles. Today I changed my fuel filter and it idles very smoothly. My car just turned 30K miles.
    No one will truely be free until nerd persecution ends.

  6. #35
    Registered User JustChou's Avatar
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    I believe that this problem has to do with the way your mounts are designed. Stock mounts have quite a bit of play in them, so when you decellerate the engine tends to lean in one direction in the engine bay (Think off throttle cruising). Then, when you hit the throttle it tries to lean in the opposite direction, and bounces back a few times before settling.

    That's why the STi mounts solve this problem. They are a higher durometer bushing, and therefore allow the engine to have less play.
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  7. #36
    Registered User scoob's Avatar
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    Quote Originally Posted by JustChou
    I believe that this problem has to do with the way your mounts are designed. Stock mounts have quite a bit of play in them, so when you decellerate the engine tends to lean in one direction in the engine bay (Think off throttle cruising). Then, when you hit the throttle it tries to lean in the opposite direction, and bounces back a few times before settling.

    That's why the STi mounts solve this problem. They are a higher durometer bushing, and therefore allow the engine to have less play.

    I cannot agree with that. It deffinately is fuel related. For me it happens in cruise at part throttle. The motor mounts should not be doing anything at that point but holding the engine. There is no significant torque increase or decrease at the time. My hunch is that the ecu is momentarily switching over from an aggressive map to a more mundane one. It happens alot after I have accelarated and then cruise for about 10 - 30 seconds, thne bam it happens. Warmer days seem to make it more noticable too.
    My car looks just like this without the skirts and roof wing! Yeah baby!

  8. #37
    Registered User enash99's Avatar
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    Quote Originally Posted by droogie
    Exactly, I wonder what it is? Mine happens all the time. If I barely touch the throttle it jerks.

    AC is off.

    Same here, never noticed it when stock i thought it just maybe that i need to be re tunned to get my A/F setup for my mods
    2003 Platinum Silver Metalic Sedan
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    Quote Originally Posted by Yossarian
    Even if your car was stock, your chances of warranty coverage are about as good as a retarded chimp trying to do a calculus problem while high on pcp.

  9. #38
    Registered User perfusionista's Avatar
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    Has anybody tried something as simple as cleaning the MAF sensor? That's a classic cause of jerky throttle response. There's a thread on it somewhere here...

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