Materials to Maintain Your ZHP IIIII Hand Protection IIIII Tools to Maintain Your ZHP
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  1. #1
    Join Date
    May 2012
    Location
    Asheville, NC
    Posts
    38

    Need help figuring out where to start

    So recently I've noticed that at low fuel loads that my idle is much more unsteady and even feels like it is going to die at times. Tonight when I drove briefly, the car felt fine when I was accelerating and using the throttle in general. But the car sounds like dog poo at idle. The sound was directly related to the cars idle being unsteady and trying to die as they both happened at the same time.

    Also, sometimes when I am accelerating the car feels like the power is "swimming" kind of like a sin wave.

    Thus far, I have never seen a check engine light or any electronic indication that anything is wrong; just what I have seen, felt, heard from the car.

    I wanted to see what others thought about these things. I took a couple videos, and I may post them later, but I think most of the sound is washed out on my poor cell phone microphone.

    If all else fails, does anyone know a reliable and trustworthy repair shop in the Austin area of Texas?

  2. #2
    Join Date
    Jan 1970
    Location
    Southern California
    Posts
    18,064
    Big time guess but perhaps fuel pump... those are known to go bad and one symptom is issues when fuel is low.
    Randeaux/Rando/John/jr - '06 Cic ZHP; Southern California
    "ZHP or not, I still like you"


    ZHP Performance Package, Cold Weather Package, Leather, Jet Black/Black/BlackCube, NAV, Anthracite Black "my individual" interior trim
    ESS Stage 1 Twin Screw Supercharger, Sprint Booster, BMW Perf Intake, Magnaflow Exhaust, Dinan TB & STEP S/W, UCC Sway Bars, Apex EC-7 18x8.5 ET38
    Suspension: AST 44100 dampers, Bimmerworld front adjustable end links, Swift springs (8K front, 10K rear), Vorshlag camber plates
    Dynavin D99+, Hardwire V1 (w/V1 Connection), BSW Stage 1 Speakers, Kicker Amp/Subwoofer
    BMW Performance Strut Brace, Orion V2 Angel Eyes, No-holes License Plate, SMG Paddle Shift Mod, Besian VANOS, Gold DISA, Fan Delete, M3 Side Mirrors
    Note: Actual car no longer resembles signature picture

  3. #3
    Meric Guest
    Could be fuel filter? With low pressure it might be clogged and not much of a fuel going in to the engine?

  4. #4
    Join Date
    Jul 2011
    Location
    Houston, TX
    Posts
    2,378
    could be fuel pump/filter. i know we have a few guys in ATX, they should be able to recommend a shop.
    --Wes--

    04 330i ZHP Oxford Green/Natural Brown
    04 330Ci ZHP Silvergrey/Alcantara (RIP)

  5. #5
    Join Date
    Mar 2011
    Location
    Baltimore, MD
    Posts
    6,940
    Change your fuel filter. If trouble persists, replace the fuel pump. Easy swaps and you should be back on the road in no time.
    Porsche 944 Turbo Build

    One ride and you'll understand why most rocket scientists are German.

    My ZHP Build 2004-2014 RIP


  6. #6
    Join Date
    Feb 2011
    Location
    Deale, MD
    Posts
    1,826
    Quote Originally Posted by Hornung418 View Post
    Change your fuel filter. If trouble persists, replace the fuel pump. Easy swaps and you should be back on the road in no time.
    ^What Justin said! Try fuel filter first!

  7. #7
    Join Date
    Jan 1970
    Location
    Southern California
    Posts
    18,064
    Agree. I was thinking filter too but for some reason just left it off.
    Randeaux/Rando/John/jr - '06 Cic ZHP; Southern California
    "ZHP or not, I still like you"


    ZHP Performance Package, Cold Weather Package, Leather, Jet Black/Black/BlackCube, NAV, Anthracite Black "my individual" interior trim
    ESS Stage 1 Twin Screw Supercharger, Sprint Booster, BMW Perf Intake, Magnaflow Exhaust, Dinan TB & STEP S/W, UCC Sway Bars, Apex EC-7 18x8.5 ET38
    Suspension: AST 44100 dampers, Bimmerworld front adjustable end links, Swift springs (8K front, 10K rear), Vorshlag camber plates
    Dynavin D99+, Hardwire V1 (w/V1 Connection), BSW Stage 1 Speakers, Kicker Amp/Subwoofer
    BMW Performance Strut Brace, Orion V2 Angel Eyes, No-holes License Plate, SMG Paddle Shift Mod, Besian VANOS, Gold DISA, Fan Delete, M3 Side Mirrors
    Note: Actual car no longer resembles signature picture

  8. #8
    Join Date
    Jan 1970
    Location
    Liberty Township, OH
    Posts
    37,935
    May also want to check for stored codes in the absence of an ses light.

    Sent from Williamsburg, VA USA
    Call Me Dane l 2/2004 330i ZHP l 18x8 ET45 BBS CK's wrapped with Michelin Pilot Sport AS3+ @ 245-40-18 l KW V1 Coilovers in front l KW V1 springs w/ Bilstein B8 dampeners in rear l BMW Performance Rotors l UUC StrutBarbarian l Racing Dynamics Rear Strut Bar l Jim Conforti Shark Injector l Light Birch Interior Trim l Bimmian Celly Mount l M3 Trunk Mat l l e90 Performance E-Brake & Shift Knob l M3 Tri-Stitched Boots l AL Headlight Retrofit with ZKW Lenses l CobyWheel Wrap w/M3 Stitching l LCM sw 4.5 triple blink and rear fogs l Maple Interior Trim

  9. #9
    Join Date
    May 2012
    Location
    Asheville, NC
    Posts
    38
    What is the best (i.e. cheapest, reliable) place to get a fuel filter?

  10. #10
    Join Date
    Jan 1970
    Location
    Liberty Township, OH
    Posts
    37,935
    Quote Originally Posted by Palindrome View Post
    What is the best (i.e. cheapest, reliable) place to get a fuel filter?
    Probably can get one at autozone, or the like, for cheap....if you're in a bind. Otherwise, FCPeuro, ECSTuning, or AutohausAZ online.

    Sent from Williamsburg, VA USA
    Call Me Dane l 2/2004 330i ZHP l 18x8 ET45 BBS CK's wrapped with Michelin Pilot Sport AS3+ @ 245-40-18 l KW V1 Coilovers in front l KW V1 springs w/ Bilstein B8 dampeners in rear l BMW Performance Rotors l UUC StrutBarbarian l Racing Dynamics Rear Strut Bar l Jim Conforti Shark Injector l Light Birch Interior Trim l Bimmian Celly Mount l M3 Trunk Mat l l e90 Performance E-Brake & Shift Knob l M3 Tri-Stitched Boots l AL Headlight Retrofit with ZKW Lenses l CobyWheel Wrap w/M3 Stitching l LCM sw 4.5 triple blink and rear fogs l Maple Interior Trim

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