Drive a Honda Civic Eg/EK Must Read!

Discussion in 'Honda' started by E-Tech, Nov 9, 2009.

  1. siauann

    siauann Senior Member
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    1997 year EK4 sir is it affected? how do i check the ecu? is it difficult to diy remove and check?
     
  2. E-Tech

    E-Tech Senior Member
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    Hi Hi...
    Find out you car's actual ECU number...
    If it is P08 / P27 / P28 or P30 which are OBD1 based ecu , then yes affected and have this problem.

    If your is 100%-ori EK4 1997- then should be FINE. (OBD2A based)

    tq
     
  3. siauann

    siauann Senior Member
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    mine is ori EK4 1997
    how do i check my ECU number? is it easy to remove this ECU and check? newbie here. just got this car few weeks back
     
  4. E-Tech

    E-Tech Senior Member
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    Siauann
    Ecu located at front passenger side.
    Side panel under the console.
    Remove the side pastic cover and you will
    Be able to see the ecu...remove some screws
    And ecu can be brought out.
    Number is at the side of the ecu...
     
  5. siauann

    siauann Senior Member
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    Etech
    under the console means the center console or the side glove compartment?
     
  6. E-Tech

    E-Tech Senior Member
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    Glove compartment lah.
    At road flare panel....
     
  7. E-Tech

    E-Tech Senior Member
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    Badly burnt P08
     

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  8. e-jump

    e-jump Senior Member
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    I know that feel.
    I got mine (P27) caps leaked last year, and need to fork rm700 for a replacement at halfcut.
    Not much choice as I need the car running ASAP
    Now i need to keep a lookout if my replacement ECU going to have bad caps as well
     
  9. E-Tech

    E-Tech Senior Member
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    Anyone got scrap(beyond repair) ecu for sale?- P30/P08/P27
    Please let me know okay....
     
  10. leachuan

    leachuan Senior Member
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    Wow, i need to check my ECU already. "Fingers crossed"
     
  11. leachuan

    leachuan Senior Member
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    Location Capacitance Voltage Temperature
    C21 33uF 35V 105C
    C27 220uF 35V 105C
    C31 220uF 10V 105C
    C32 33uF 35V 105C
    C34 33uF 35V 105C
    C36 47uF 10V 105C
    C94 100uF 10V 105C

    Opened my P30. Above is what i jot it down....
    Yea... A few caps are deteriorating.
     
  12. E-Tech

    E-Tech Senior Member
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    Correct... Get them all change.
     
  13. leachuan

    leachuan Senior Member
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    Hi E-Tech,

    The current capacitors are from Nichicon KME series...

    What brands you use for replacement?
     
  14. E-Tech

    E-Tech Senior Member
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    Elna if not mistaken.
     
  15. leachuan

    leachuan Senior Member
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    Japan brand also :) Hope i can find branded caps here in Klang. So no need to travel to Pasar road.
     
  16. E-Tech

    E-Tech Senior Member
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    My bad.... RUBYCONs and KMGs
     

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  17. leachuan

    leachuan Senior Member
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    Any specific ripple current rating on those caps?
     
  18. E-Tech

    E-Tech Senior Member
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    All ready to go...
     

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  19. leachuan

    leachuan Senior Member
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    E-Tech, I found my caps :) Thanks for the help anyway.

    ---------- Post added at 11:36 AM ---------- 6 hour anti-bump limit - Previous post was at 10:30 AM ----------

    First of all, I wanted to thank E-Tech for bring up this topic.

    I did some searching on the capacitors of my P30. My personal thought as below:

    The capacitors inside my P30 were from Nichicon and the ratings are stated:
    Location Capacitance Voltage Temperature
    C21 33uF 35V 105C
    C27 220uF 35V 105C
    C31 220uF 10V 105C
    C32 33uF 35V 105C
    C34 33uF 35V 105C
    C36 47uF 10V 105C
    C94 100uF 10V 105C

    6 of the capacitors were Nichicon PR series and C94 I couldn't see the brand but it's a KME series. Nichicon PR series is an obsolete model. It was replaced with PS series which is miniature size, low impedance and for switching power supplies. There is also a better (in my opinion) series - PW which is also miniature size, low impedance and HIGH RELIABILITY for switching power supplies.

    There are couple of manufacturers in the market, eg. Rubycon, Panasonic, Vishay etc which is common in the market you can choose from...

    In order to choose compatible capacitors, there are few things to look at:
    1. Minimum capacitance.
    You must know the capacitance, cannot be lower than specified.

    2. Temperature.
    The one in my P30 was clearly stated 105 degree C. So stick to it so it can withstand/last longer when the capacitor heats up during charging and discharging.

    3. RMS Ripple Current.
    You will see this in the datasheet. Capacitor will generate heat when charging and discharging current flow (Ripple Current). This R.M.S. ripple current generally is stated at the condition of 100kHz/105 degree C. Higher the better.

    4. Endurance/Lifespan
    Generally capacitor will have the number of hours tested with ripple current applied at 105C. Higher the better.

    5. ESR (Equivalent Series Resistance)
    Only some of the datasheet specified, higher ESR increase heat dissipation and aging. Lower the better.

    6. Leakage Current.
    Flow of leakage current for aluminium electrolytic's increases with temperature. Normally I found the in the range of 3-4uA.

    7. Size
    Size does matter. If you are replacing the old ones, the same size will be hassle free. No worries on the space constraint and pitch issue.
    However, small difference of pitch/height/diameter can be adjusted to cater the space on the PCB (printed circuit board). Best is for the capacitor to sit perfectly (attached) to the PCB.
    Normally smaller device cater lower voltage and maximum temperature rating. Miniatured device often have lower lifespan compare to larger device. But, technology is more advance today.

    That's all I have for today. Although is easy to match by physical unit which is printed on:- Capacitance, operating voltage and max temperature, don't judge by the look if you are fussy :) Engineers create a datasheet for a reason. Companies don't pay specific engineer (technical writer) just to write out the characteristic for no reason. Knowing details can get better reliability capacitors with your budget.
     
  20. E-Tech

    E-Tech Senior Member
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    Wah...thanks for the update...
    Hee hee hee... Most of those spec is critical
    for application in amplifier or car stereos or receivers...
     

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