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  1. #1
    Member Array
    Join Date
    Jan 2013
    Location
    Brisbane, qld
    Car:
    98 ek b18cr

    Exclamation B18c7 warm start issues - temp sensors??

    I'm posting in ere because its an integra engine and there's no hybrid section.
    But I am trying to finish an ek b swap with the 2000 integra type r engine - b18c7.
    But, it will only start in the cold. Not hot. As in early mornings and late nights.
    Once it's been running and shut off it won't start back up again.
    I've been trying to fix it and told time and again that its wiring. But I'm thinking its temperature related due to it being the factor.
    Has anyone had this before??
    Once started in runs rich and kinda different. I've never driven a b series so I'm not 100% sure if its correct or wrong...
    Seriously please help. I want to drive my civic again

  2. #2
    Member Array
    Join Date
    Jan 2013
    Location
    Brisbane, qld
    Car:
    98 ek b18cr
    Okay. So I took out the iat sensor and it appears to have short out. Great.
    But could it be causing it to run so rich??

  3. #3
    Member Array
    Join Date
    Jan 2013
    Location
    Brisbane, qld
    Car:
    98 ek b18cr
    So replaced the iat with one from wreckers. Returned all wiring to factory. Still the same issue. Cool nights and mornings fine. Not during the day.
    Other ideas?? Map sensor? Coolant temp sensor??

  4. #4
    Member Array
    Join Date
    Dec 2003
    Location
    Sydney
    Car:
    DC2R - S2000
    Warm start issues could be related to the CTS. Try replacing it, not too expensive.
    Also look at the injectors, warm start issues may be related to the fuel delivery.
    When the car has warmed up, the heat from the engine could boil the fuel in the injectors which will need fuel pump priming to get the fuel pressure back to normal.
    Just a guess though, please correct me if I am wrong.

  5. #5
    Member Array
    Join Date
    Jan 2013
    Location
    Brisbane, qld
    Car:
    98 ek b18cr
    but its not even when the car has warmed up. its the simple temp of the air and sun that is causing the issues :/
    but i'll check the injectors tomorrow.
    however, what is the cts?

  6. #6
    Member Array
    Join Date
    Jan 2013
    Location
    Brisbane, qld
    Car:
    98 ek b18cr
    sorry. coolant temp sensor?
    i have checked both sensors, coolant pissed out everywhere. there doesnt seem to be any damage to the inside of them, ill google ways to test each of the temp sensors and run through them all tomorrow.
    could it be due to anything else? could it be timing related or distributor related??
    also could i lose spark if the engine is flooded? is this a feature in the ecu to prevent damage to the block??

  7. #7
    Member Array
    Join Date
    Mar 2012
    Location
    Eastwood
    Car:
    Waiting on ride
    ECU could be causing this.. I had an issue with this a while back when cold the car would start fine but when warm, not sure WHY but when warm, you wouldn't get a signal back from ECU after key was turned and no lights would be on the dash at all.
    SOHC just kicked in YO!

  8. #8
    Member Array
    Join Date
    Jan 2013
    Location
    Brisbane, qld
    Car:
    98 ek b18cr
    nah im getting fuel pump priming, all lights on dash work fine except for the battery light which is staying lit.
    no cel. nothing...

  9. #9
    Moderator Array
    Join Date
    Apr 2008
    Location
    Melbourne
    Car:
    '90 EF8/'94 EH9
    Main Relay - likely needs re-soldering.

    Search it here on OzHonda.

  10. #10
    Member Array
    Join Date
    Jan 2013
    Location
    Brisbane, qld
    Car:
    98 ek b18cr
    I've got three that I've been trying through. None of the solders have any cracks either

  11. #11
    Moderator Array
    Join Date
    Apr 2008
    Location
    Melbourne
    Car:
    '90 EF8/'94 EH9
    Try re-soldering them anyway. Looks can be deceiving with those main relays.

  12. #12
    Member Array
    Join Date
    Jun 2013
    Location
    TEKNO Performance
    Car:
    CU2 Euro
    Quote Originally Posted by Dyln.bxtr View Post
    Okay. So I took out the iat sensor and it appears to have short out. Great.
    But could it be causing it to run so rich??
    These usually only short put if you muck up the plugs for IACV, IAT & or charcoal canister VSV
    Did you or do you have a MIL ? (engine check light)

    Re coolant temp sensor, you check it with a multimeter (resistance at temp) not visually.

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