So it all started while I was driving down the road, the CEL came on.

I checked the codes and it threw codes 10, 14, 16....

I replaced them all and it started finally but idle'd funny and the CEL was still on. So I took off the neg of battery to reset ecu and now it wont even start. its a d15b1 91 civic hatch DPFI, I replaced both injectors, the o2 sensor, the idle control sensor thing and the air tempeture sensor... im so lost. please help!

 

so are there any codes?

And to reset the ECU just take the negative cable off?

 

the car wont start and no codes are showing up. and yeah to reset the ecu u just take the neg cable off for about 5mins

 

BUMP really need help!

 

you getting fuel? Getting spark?

 

you need to check spark and or fuel...i recomend checkin spark first...the most common prob on these is efi main relay under dash or the ignitor in dist. inwhich case just get a reman unit. easy...check it....grab a number 2 phillips and push it into the plug wire..like where the plug wud go, then hold it quarter inch from valve cover nut and have a buddy crank...good spark will jump half inch...test fuel...get 17 mil wrench or 10 mil and loosen top fiting on fuel filter...shoud be more gas than u cud pee while cranking...also need to test key on voltage to the blue and yellow wires on the 2 pin connectr for dist...if no volts, replace relay, if 12 volts there, and ur shure the rotor is in fact turnin, rplace dist assy...lemme no whacha find...these r real easy systems...u can do it

 

I checked spark with a timing light...

 

Yeah check your main relay...also i once i had to reset my ecu and then my car wouldnt start. the reason was my ecu fuse under the hood had gone bad....

 

I'm having a similar problem with my 91 hatch with a b20b. I blew a head gasket, replaced it, and now it won't even crank @ the key. I gett power to the keyswitch, re-soldered some iffy splices on it, check all my fuses... But nothing. If I jump the starter with a screwdriver it cranks fine, but I get no spark? Haven't checked injector pulses yet, but the pump cycles fine. Clutch switch has been bypassed as well. I'm goin crazy over this thing... Even pulled out my whole alarm system. Maybe we can help each other out.

 

bump...
anyone have any insight? I re-soldered a splice on the coil + wire. Still nothing. Double, triple, and quadruple checked my wiring to the dizzy, it all looks right. Still not flashing any codes (on first try, it flashed 10, hooked up O2 and now no codes. I'm getting good 13v to ecu). With a test light grounded to hot and poked into coil neg/tach lead and turn over @ starter, I don't get any flashes... With a multimeter I get some low volts. Is my dizzy fried? I have a '91 hb with b20b and pr4 obd0 ecu... Any help is greatly appreciated.

 

check all ground!!!!!! i just did a motor swap from d15b1 to a d16z6.... and was going throught this issue and come to find out i needed to redo all my grounds... and check the ground at the temp sensor in back of block for the d15 or at the piping for a d16..... that ground for the sensor is the ground for the ecu and other sensors.... you will through codes id this ground isnit installed right....

 

Ground leads can definitely be a huge PITA. My grounds to the trans. and valve cover are good. There are a couple loose wires I'm not sure about... I know yellow wires are hot, and there is one that I havent found anywhere it goes. there are also 2 two-wire plugs loose... Anybody with b-series knowledge know what would cause it not to start and not throw any codes? I'm gonna get a diagram printout from Alldata maybe that will shed some light.