Alright heres the deal, i have a 90 crx si. it used to have a b16a swap in it which worked fine. i now have a b18c1 block mated to a b16a head turbo'd. ive converted to obd1 but since then the engine wont fire. there is fuel at the rail, and plenty of spark. ive since installed a new main relay, new injector resistor box, new engine ground, cleaned thermostat ground and also ran a wire from the thermostat ground to the body of the car. the ecu is a p28 with a chrome basemap, ive also swapped ecus from another p28 with a neptune basemap. the jumper harness is from hivelocity tuning in oakville and the injectors are dsm450 blue tops. the car will idle with an obd0 distributor and pr3 ecu but swap it over to obd1 and it does nothing.if im leaving anything else out let me know, im open to any ideas i have a serious boner to get this thing rockin.

 

do you have a jumper harness for the distributor because the wiring is different from obd0 and obd1
http://www.rywire.com/catalog/obd0-t...pter-p-40.html

 

i cut and spliced the dizzy wiring so i can plug it into the obd0 harness

 

i would recheck your wiring and the condition of the distributor again because if the car runs with a obd0 distributor and not an obd1 either a problem with your obd1 ecu, your jumper harness has something mixed up, your wiring, or the distibutor itself

 

the distributor is brand new, there is plenty of spark, fuel is not getting past my injectors

 

you sure those injectors need the resistor box?

i have injectors on my crx si from the 92-95 civics and i dont use one!

 

dsm450 blue tops, re-read post

 

Oops sorry missed that part, idk I'm sure you have already checked your injector wiring and your ecu. Not sure what else to check

 

anyone else come across this problem? i thought that maybe my dist wiring was wrong but everyone has been sending me the same pics and links. there is plenty of spark but would it come from the crank sensor and tdc sensor? perhaps dist has bad cam sensor? does cam sensor relay a signal to the ecu for injector pulse?

 

i had this same problem when i turboed my ef for the first time with the same kind of injectors too . those injectors dont require a resistor box. loop out the resistor box and you should get some fuel in those cylinders.

 

Yup. Obd1 don't require the resistor box. They're saturated

 

i thought blue tops were obd0. ill give er a go

 

let me know if it works.

 

My bad. Double checked and apparently they're peak and hold. So resistor box is necessary. If the crank sensor were bad, the PCM would cut ground to the main relay, so you wouldn't get fuel. But you wouldn't get spark either. You sure you getting spark with the obd1 distributor?

 

yeah i have one of those dummy plugs you clip on a ground the thing snaps like a bastard. hmmmmm this is wierd getting 2 sides here. no box/needs box this is wierd

 

well i had 450cc blue top dsm injectors i got from my buddy with 92 gsx eclispe. installed them on my old setup turboed sohc vtec in my ef. had resistor box wired in thinking it need one because of the internet research i did. well the car wouldnt start until i looped out the resistor box. started right up afterwards.

 

Maybe there's non obd AND obd1 blue tops
92 eclipse would be obd1, no?

 

im gonna give er a whirl. if it works ill **** my pants

 

no dice boys. still plenty of spark and plenty of fuel at the rail but no fire up. what it did do though was fire for a split second and then die. i guess thats a little more than usual.

what i did try was to fire it up on the obdo ecu and dizzy and it would run using the 450s and a resistor box. with the new ecu its not even wanting to engage start up mode then run the loop at all. im really out of ideas...

 

no trouble codes? Getting 12 volts to your injectors?

 

What kind of jumper harness are you using? I had a cel code 16 one time and it was because of my jumper harness. I had to resolder the injector wires on the jumper harness.

 

I would check the resistance of your injectors. Take your old obd0 injector and measure resistance ( ohms ) between the two terminals. Then do the same thing to the blue tops. This will narrow down which injectors you have. If they dont need the resistor box you have to cut all the wires going to the box and splice all them together. This will remove the resistance.

 

Using the resistor box or not has Only to do with what injectors you are running. If you are running low impedance injectors then you must have a resistor box. High impedance without one. Regardless of you 0bd version. If it runs off 0bd0 then your fine.
You most likely have a problem in your dizzy wiring, if the ecu does not see the cam sensor from the dizzy then it will not send the pulse to fire injectors.
Are you getting any codes?

 

im getting 3 codes one was air intake temp, coolant temp sensor and vtec pressure solenoid. im getting power all through the injector wiring but i did not check the resistance through the injector. my harness is from hi velocoty tuning ill post a link tonight. which would the cam senspr be i know there is crank, tdc and no1 cyl. maybe i will check if one is backwards bit no dist codes.

 

Do you have these codes when you have it hooked up 0bd0 and running?