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Civic b20b 16a swap coolant issue

Discussion in 'General Tech and Maintenance' started by Catalystsz, Jul 10, 2017.

  1. Catalystsz

    Catalystsz New Member

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    Fan never turned on when I idled it and coolant came that's probably the issue
     
  2. CAFROG

    CAFROG Honda Minion VIP

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    With a cooled down motor:

    Take radiator cap off
    Start car
    See if the radiator will take any coolant
    Make sure you can see (roughly) the coolant level
    Let it idle for a while (this should take 20-40min)
    Periodically check temp gauge
    See if the thermo opens (by looking at coolant level in rad)
    Add coolant if level drops when thermo opens
    Fan should come on when thermo opens

    If the car heats up.....

    Thermo may not be opening. You can check the thermo in a hot glass of water or buy a new thermo (not sure if you've already done that). They're mechanical and operate based on temp. They're designed to stay open when they go bad but I figure it's possible to stick closed.

    Or a clog in your coolant system

    Or.....the water pump is toast. Take timing cover off and visually inspect for leaks around water pump. Driver's side and it runs on the timing belt.

    Come to think of it....a new timing belt and water pump is not a bad idea....depends if they guy before did it or not. Some guys continue using parts by scavenging off blown engines.
     
  3. Catalystsz

    Catalystsz New Member

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    Well I opened the rad cap just now, and coolant is literally to the top on the radiator when I had it running before the top coolant hose was hot and I believe the bottom was too, but I'll start it up and try it out
     
  4. Catalystsz

    Catalystsz New Member

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    So can never came on, temp gauge never went past half and coolant never really boiled out, but it looks like It was burping, the bottom line never got hot until it started to burp both lines are hot...the overflow doesn't look like it even went down maybe a little...
     
  5. CAFROG

    CAFROG Honda Minion VIP

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  6. Catalystsz

    Catalystsz New Member

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    Alright I'll check that when I'm off work, thank you!
     
  7. dilbeckskate

    dilbeckskate infamous

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    110% need to be getting fan on but im not leaning torwards thermostat sticking closed they have been fail save to stick open when fail for over 15 years , im leaning torwards if headgasket issue from the b20v setup not done correctly if the fans dont fix it
     
  8. Catalystsz

    Catalystsz New Member

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  9. Catalystsz

    Catalystsz New Member

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    I suspected the heads at the beginning when I wasn't sure about the fan so I checked oil and coolant but they're both proper color, haven't seen anything out of the ordinary, no smoke or anything and I had never seen the fan turn on, so hopefully it's just that
     
  10. dilbeckskate

    dilbeckskate infamous

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    well send 12v to the fan lol
     
  11. CAFROG

    CAFROG Honda Minion VIP

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    I rather he try to diagnosis it like post #8 in the thread I pasted.
     
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  12. Catalystsz

    Catalystsz New Member

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    So...there was never any fuse in the fan relay, can I use one of the other fuses or do I need a proper one?
     
  13. E_SolSi

    E_SolSi Member of the 20 nut club Moderator VIP

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    should be a standard 15A blade fuse
    there is probably a spare one in the interior fuse box

    unless its the actual relay you are missing
    in which case you will probably need a proper one
    but could likely get one on the cheap at a pick and pull
     
  14. CAFROG

    CAFROG Honda Minion VIP

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    Check some wiring at the fan. Does it look tampered with? If it looks fine, toss a 15A in the fuse holder and see what happens. If fan still doesn't come on, check fuse and, if it's still good, put it back and try to follow the procedure I linked for you.
     
  15. Catalystsz

    Catalystsz New Member

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    It's been a couple days, been busy. Turned out i never had a relay, I ran it that day anyway and got some good driving in, never overheated or lost coolant so definitely a fan issue, she's pretty shaky and sounds like she wants to fall apart inside but it's got speed that's for sure!
     
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