Fuel Injectors not pulsing after 94 Gsr Swap

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Old 10-25-2012, 03:30 PM
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Default Fuel Injectors not pulsing after 94 Gsr Swap

1991 Crx Si
91 Crx Si engine harness
obd1 p28 chipped ecu, Check Engine Light on for o2 sensor
Rywire Jumper obd0 to obd1 Jumper harness and vtec subharness. they flipped pin d19 and d20 on the obd1 jumper clip so i fixed it.
94 B18c1 GsR motor came out of a running crx si
b16 j1 Tranny
This is my problem: my fuel injectors will not pulse. i checked for voltage and they get the amount that the battery, around 12v. i had an obd0 LS swap in it and it ran fine. i parked the car running. ive changed my main relay, changed and checked my fuses (maybe i missed one), checked timing, checked grounds. im using an obd0 b16 vtec dizzy. i was using a obd1 vtec dizzy but got rid of it because i had "bad" spark. my sensors are plugged in except a two wire small clip near the oil filter and pressure switch in the back. i deloomed my wire harness and everything looks and tests good. im using the stock injectors on the motor with obd0 clips. my whole harness is obd0 btw. it wants to start but just cranks. does anyone have any idea what else i could do? car doesnt start with starting fluid either. PLEASE I WANT THIS CAR RUNNING ALREADY. A FEW MONTH PROJECT TURNED INTO A NIGHTMARE.
Old 10-25-2012, 04:11 PM
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Default Re: Fuel Injectors not pulsing after 94 Gsr Swap

You stated you're using the stock injectors on the motor. Given you said you were running OBD0 previously, does that mean you are using OBD0 injectors in conjunction with the P28 ECU? If so I believe that is your problem.
Old 10-25-2012, 04:13 PM
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Default Re: Fuel Injectors not pulsing after 94 Gsr Swap

Originally Posted by 24TEN
You stated you're using the stock injectors on the motor. Given you said you were running OBD0 previously, does that mean you are using OBD0 injectors in conjunction with the P28 ECU? If so I believe that is your problem.
the injectors are obd1 not obd0. im not getting pulse on the inj. clip. i used a noid light to check it and i get nothing from it.
Old 10-25-2012, 04:14 PM
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Default Re: Fuel Injectors not pulsing after 94 Gsr Swap

Rewired to eliminate the resistor box?
Old 10-25-2012, 04:17 PM
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Default Re: Fuel Injectors not pulsing after 94 Gsr Swap

Reset the ECU and then crank the engine for 30 seconds. Check whether any new codes are set.
Old 10-25-2012, 05:59 PM
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Default Re: Fuel Injectors not pulsing after 94 Gsr Swap

Originally Posted by 24TEN
Rewired to eliminate the resistor box?
no i didnot.thats probally itthen? if so how/where do i that.
Old 10-25-2012, 07:09 PM
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Default Re: Fuel Injectors not pulsing after 94 Gsr Swap

Originally Posted by 24TEN
You stated you're using the stock injectors on the motor. Given you said you were running OBD0 previously, does that mean you are using OBD0 injectors in conjunction with the P28 ECU? If so I believe that is your problem.
ive found out that obd0 inj clips wont fit into obd1 inj. so i must be running obd0 injectors. is this true?
Old 10-26-2012, 07:13 AM
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Default Re: Fuel Injectors not pulsing after 94 Gsr Swap

bump
Old 10-26-2012, 07:46 AM
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Default Re: Fuel Injectors not pulsing after 94 Gsr Swap

Get rid of the resistor box and go from there.
Old 10-26-2012, 07:52 AM
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Default Re: Fuel Injectors not pulsing after 94 Gsr Swap

Originally Posted by EF8DayDreamer
obd1 p28 chipped ecu - im using an obd0 b16 vtec dizzy.
OBD0 distributor won't work with OBD1 ECU
Old 10-26-2012, 07:54 AM
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Default Re: Fuel Injectors not pulsing after 94 Gsr Swap

Originally Posted by EF8DayDreamer
ive found out that obd0 inj clips wont fit into obd1 inj. so i must be running obd0 injectors. is this true?
not true - we have used OBD0 injector clips with OBD1 injectors many times
Old 10-26-2012, 11:10 AM
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Default Re: Fuel Injectors not pulsing after 94 Gsr Swap

Originally Posted by 24TEN
You stated you're using the stock injectors on the motor. Given you said you were running OBD0 previously, does that mean you are using OBD0 injectors in conjunction with the P28 ECU? If so I believe that is your problem.
I just realized I stated this completely wrong. What I meant is you can't run an obd1 injector if the wiring still includes the resistor box. It's a difference of peak/hold vs saturated style injectors, nothing to do with the ECU. Having said that, make sure you have them wired correctly.

If it all checks out I believe jlicrx just found your real problem.
Old 10-26-2012, 01:23 PM
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Default

i was using a obd1 dizzy before i swapped it to obd0 and the car still woudnt start. i wish i tested the injector clips to see if they pulsed.

Last edited by EF8DayDreamer; 10-26-2012 at 01:40 PM.
Old 10-26-2012, 01:52 PM
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Default Re: Fuel Injectors not pulsing after 94 Gsr Swap

Originally Posted by 24TEN
I just realized I stated this completely wrong. What I meant is you can't run an obd1 injector if the wiring still includes the resistor box. It's a difference of peak/hold vs saturated style injectors, nothing to do with the ECU. Having said that, make sure you have them wired correctly.

If it all checks out I believe jlicrx just found your real problem.
on my fuel injectors i have 2.1 ohms of resistance on all four. im guessing there obd1 from that reading?
Old 10-26-2012, 02:01 PM
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Default Re: Fuel Injectors not pulsing after 94 Gsr Swap

Originally Posted by jlicrx
OBD0 distributor won't work with OBD1 ECU
okay. probally a dumb question but the junkyard up my street has a d16z6 dizzy would that work/fit?
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