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SINISTR
26-11-2008, 12:47 PM
hey guys,

i've got a couple problems with idle and choke im trying to sort out on a 88 Civic with D15B4 Dual Carb motor... i've looked for a pdf'd FSM but keep finding the single carb or EFi models.

Can anyone point me in the right direction towards the correct PDF?

thanks in advance
Mike
TODA AU
26-11-2008, 12:49 PM
http://pdf.hondatech.com.au/Civic/HondaTech.com.au.Honda%20Civic%20(1988-90)%20Service%20Manual%20EF.zip (http://www.hondatech.com.au/links/showlink.php?l=14&linkurl=http://pdf.hondatech.com.au/Civic/HondaTech.com.au.Honda%20Civic%20(1988-90)%20Service%20Manual%20EF.zip)
SINISTR
26-11-2008, 02:18 PM
thanks - but its what i already have in both PDF and printed versions - no Dual Carb in there tho....
ECU-MAN
26-11-2008, 03:28 PM
unplug the IAVC and see if it idles better,

note this will put a code in the ECU so you will have to reset it after testing
SINISTR
26-11-2008, 03:42 PM
this car doesn't have an ECU - and I want to have the diagrams so i can locate components - atm im stabbing in the dark where stuff is...

it hangs itself on idle when you start it - revs up to 3000 rpm, and sits there. After a while it drops down but once you turn it off and back on again it revs up again - even tho its hot already. I suspect the IACV is water operated since it an older car but I want to know exactly where stuff is so i can trace the systems etc.
Edgeauto
26-11-2008, 05:50 PM
The dual carbs do actually have ECUs. As ECU-MAN try unplugging the IAVC although i usally leave them connected but just block the up. If that fails you will most likely have to replace the choke assy which honda call a thermo wax valve opener. It's on the LH carby.
funkdr
26-11-2008, 05:57 PM
There was a manual at http://ww1.honda.co.uk/cars/owner/workshop.html

But its for the concerto, it has the dual carb setup in it.
funkdr
26-11-2008, 05:58 PM
Found it


http://media.honda.co.uk/car/owner/media/manuals/ConcertoManual/
thepope1986
26-11-2008, 07:15 PM
the Ecu is under the passenger side carpet where it angles up under the dash that bronze looking plate thing.
TODA AU
27-11-2008, 06:31 AM
Found it


http://media.honda.co.uk/car/owner/media/manuals/ConcertoManual/

Well done... :thumbsup:
Exellent find.
SINISTR
27-11-2008, 09:14 AM
Why isn't there an ECU light on the dash then?

thanks heaps for the link guys - i'll download it when i get home tonight.
ECU-MAN
28-11-2008, 10:24 AM
beacuse its a carby

they have a red MIL window on the ECU