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Thread: Civic 99 Grounding Issue (Pivot design)

  1. #1
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    Default Civic 99 Grounding Issue (Pivot design)

    Equipment:
    Civic 99
    D15B VTEC
    Factory ECU
    Factory A/T
    JVC headunit
    V12 Amp
    Pioneer 6915 speakers
    Earthing cables used: 30mm (for negative terminal to strut tower) and 26mm for all other connections.

    In an attempt to make my car perform better, I recently experimented with a better grounding system.

    PHASE 1:
    First I upgraded the 3 stock earthing connections. That made a slight improvement in the car's responsiveness (acceleration and shifting).

    Improvements Noted:
    1. No more blinking/dimming in dashboard lights.
    2. 1-2% improvement in acceleration and responsiveness.

    Persisting Problem:
    1. Low buzzing sound from speakers (with acceleration).

    PHASE 2:
    This morning I added an additional grounding kit which I made based on the Pivot Raizin-E instructions (pic attached).

    Grounding Method:
    1. Battery Negative Terminal to Driver Side Strut.
    2. Negative Terminal to Alternator.
    3. Negative Terminal to Intake/Engine Cylinder Head Nut.
    4. Cylinder Head to Distributor.
    5. Negative Terminal to Bulk Head.
    6. Bulk Head to Body Earth (Side Strut) on passenger side.

    Improvement Noted:
    1. Decrease in gearshift jerk/shock.

    Problems:
    1. Low buzzing sound from speakers.
    2. Dashboard Gear Indication Lights (P/R/N/D4/D3/2) blink/dim with the indicators.
    3. Some acceleration may also be suffering, but has not been that noticeable.

    Can someone help me fix what I am doing wrong? I'll post pictures of my setup in a couple of hours.Civic 99 Grounding Issue Pivot design -328176


  2. #21
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    Very nice sharing of information in this thread


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    Please take care of your near and dear ones. Drive safely.
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    Quote Originally Posted by xsxd View Post
    So i should remove the following grounds?
    1. Battery Negative to Firewall
    2. Firewall to Passenger Side Strut Tower.
    3. Battery Negative to top bolt on Distributor.
    4. Battery Negative to Alternator.

    I am still trying to figure out which wire that "little ground cable" is.

    The one's I replaced were:
    a. Battery Negative to Driver Side Strut Tower.
    b. Transmission to somewhere (cant seem to remember where the other end was).

    There's also a very thin wire attached to the frame very close to the passenger-side headlight. I didnt touch it since it seemed to be connected to a mesh of other wires. Do you know wht that is?

    And thanks. Very insightful, this conversation of ours.
    the wire to the front from the cylinder head is for the headlights and bonnet, The little wire you originally had on the transmission case ends at the right side chassis leg. Honda was real cheap by using a joke of a wire as ground. One solid wire from the battery to the transmission is always ideal.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    Quote Originally Posted by Xulfiqar View Post
    the wire to the front from the cylinder head is for the headlights and bonnet, The little wire you originally had on the transmission case ends at the right side chassis leg. Honda was real cheap by using a joke of a wire as ground. One solid wire from the battery to the transmission is always ideal.
    well in that case I already upgraded the transmission cable. the shift shocks (which were very hard earlier) have now toned down and shifts to the fourth gear are barely noticeable.

    If I want to upgrade the headlight/bonnet wire, what gauge wire should I use?
    The current wire has turned dark brown from rust and grime.

  5. #24
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    you are still living the placebo - your cars transmissions shifts are hydraulic controlled they have nothing to do with electrics, so how can you assume that the ground cable repaired that fault.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    Quote Originally Posted by Xulfiqar View Post
    you are still living the placebo - your cars transmissions shifts are hydraulic controlled they have nothing to do with electrics, so how can you assume that the ground cable repaired that fault.
    heh! really?! I need to have my car checked anyway... tranny (1/2 gears) shifts are delayed and rather jerky as compared to the 3/4. Plus fuel consumption is 280-290 on a full tank (A/T; with or without AC).

    I need to check the acceleration now. Will swing to DHA Phase 8 and time my car.

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    ecu ka fault lagta hai

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    seems like your transmission is starting to pack up for the holidays
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    actually, it's been doing that for a while now... months over months... my mech said "chalao jab tak chalti hai" LOL.

    but i am looking to change to the Auto tranny that comes with D15B Dual VTEC. Also looking to change the ECU, replace that single VTEC solenoid (that my mech forcefully put in) with dual solenoids, as well as add an O2 sensor.

    would you happen to know the codes of tranny and ecu? (tad bit off topic).

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    Update: Speaker whine removed when I changed fuel pump.
    Civic '99 VTi Oriel D15B 3-Stage VTEC A/T
    JVC KD-G645, Sony XS-GTR1720S, Pioneer TS-D691S, Rogers RA-6400 4CH, Addzest APA2100 2CH

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    Groundings Solve So Many Annoying Issues But As You Define......Its Solving Just More Than It Can ....!!

    Noise Filters Are Used To Avoid That Humming And Whine Speaker Sound.....
    TOYOTA Sprinter 86- AE80 DOHC 20v'D TOYOTA Corolla 98- AE101 4AFE 16v

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    Edit .

  13. #32
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    Quote Originally Posted by SER_GTR View Post
    Groundings Solve So Many Annoying Issues But As You Define......Its Solving Just More Than It Can ....!!

    Noise Filters Are Used To Avoid That Humming And Whine Speaker Sound.....
    Noise filters? You mean those isolators? Nah... Any signal suppressor will probably end up suppressing sound quality as well.

    Sent from my XT925 using Tapatalk 4
    Civic '99 VTi Oriel D15B 3-Stage VTEC A/T
    JVC KD-G645, Sony XS-GTR1720S, Pioneer TS-D691S, Rogers RA-6400 4CH, Addzest APA2100 2CH

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