OK got a 90 HF with a 1st gen obd0 B16a swap. I am using a boomslang harness. Plugged in the obd1 p30, and it will not start, spray a little throttle body cleaner in the t body, and it starts, runs a couple seconds, and dies. So i know this is a fuel issue. Unplug the conversion harness, and p30, plug in the jdm obd0 pr3, and it starts. It runs horrible on the pr3, but it has an obd2 distributor, and it has no o2, and knock sensors, but it does in fact run. I have the hf fuel injector resistor, and obd0 injectors, could this possibly be it? Any ideas? TIA

 

nope can't be that

I have all obd1 stuff on my obd0 head expect the injectors and runs perfect

sound like something else

does it crank at least???

need sumptoms

 

Will run (like ****) on a obd0 jdm pr3 ecu, will not run on jdm obd1 p30 ecu with a jumper harness from boomslang. With the p30, and the jumper harness, it will start, and die if i dump fuel into the throttle body, so i know it is a fuel issue.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by acuratech &raquo;</TD></TR><TR><TD CLASS="quote">OK got a 90 HF with a 1st gen obd0 B16a swap. I am using a boomslang harness. Plugged in the obd1 p30, and it will not start, spray a little throttle body cleaner in the t body, and it starts, runs a couple seconds, and dies. So i know this is a fuel issue. Unplug the conversion harness, and p30, plug in the jdm obd0 pr3, and it starts. It runs horrible on the pr3, but it has an obd2 distributor, and it has no o2, and knock sensors, but it does in fact run. I have the hf fuel injector resistor, and obd0 injectors, could this possibly be it? Any ideas? TIA</TD></TR></TABLE>

First, What codes are you throwing? Second, you need to clear your codes.....install the O2 sensor and the KS. Then start trouble shooting. What colors are on your distributor? Does that harness ask for color for color on the instructions or what?

 

The knock sensor, and the o2 is not installed for the OBD0 pr3. I fallowed all the instructions to install these sensors for my OBD1 p30 conversion, and they were connected to the OBD1 P30 while the engine would not start. I quickly installed the OBD0 pr3 to quickly narrow it down to the conversion harness, and the engine runs on the OBD0 pr3. The engine runs poorly on the OBD0 pr3, because i did not have the knock sensor, o2 sensor, and it had the obd2a GSR distributor. With the OBD1 P30, and conversion harness I have good spark, and it will run on the OBD1 P30 if I prime the throttle body with fuel, IE runs a few seconds, and dies. The OBD1 P30 is not setting any codes, engine light is off.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by acuratech &raquo;</TD></TR><TR><TD CLASS="quote">OK got a 90 HF with a 1st gen obd0 B16a swap. I am using a boomslang harness. Plugged in the obd1 p30, and it will not start, spray a little throttle body cleaner in the t body, and it starts, runs a couple seconds, and dies. So i know this is a fuel issue. Unplug the conversion harness, and p30, plug in the jdm obd0 pr3, and it starts. It runs horrible on the pr3, but it has an obd2 distributor, and it has no o2, and knock sensors, but it does in fact run. I have the hf fuel injector resistor, and obd0 injectors, could this possibly be it? Any ideas? TIA</TD></TR></TABLE>
you will not need the resister box your injectors dont need it seeing that they are saturated injectors I had the same problem when I put my p30 in you have to rewire the injectors if you did not get that with your engine harness

 

I just got done reading, doing a search, that you do need the resistor box when running obd0 injectors, on an obd1 ecu... I assume this info is correct?

 

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by acuratech &raquo;</TD></TR><TR><TD CLASS="quote">The knock sensor, and the o2 is not installed for the OBD0 pr3. I fallowed all the instructions to install these sensors for my OBD1 p30 conversion, and they were connected to the OBD1 P30 while the engine would not start. I quickly installed the OBD0 pr3 to quickly narrow it down to the conversion harness, and the engine runs on the OBD0 pr3. The engine runs poorly on the OBD0 pr3, because i did not have the knock sensor, o2 sensor, and it had the obd2a GSR distributor. With the OBD1 P30, and conversion harness I have good spark, and it will run on the OBD1 P30 if I prime the throttle body with fuel, IE runs a few seconds, and dies. The OBD1 P30 is not setting any codes, engine light is off.</TD></TR></TABLE>So go ahead and reinstall all the OBD1 stuff, knock sensor and O2 sensor. And you have no codes? Does the main relay come on? Fuel pump prime? What do the instructions say for distributor wiring? What is your distributor wiring set at?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1Guamracer &raquo;</TD></TR><TR><TD CLASS="quote">
you will not need the resister box your injectors dont need it seeing that they are saturated injectors I had the same problem when I put my p30 in you have to rewire the injectors if you did not get that with your engine harness </TD></TR></TABLE>
He is running the OBD0 injectors, therefore he needs to continue running his resistor box.

 

What map are you running, map sensore that is. I just found out with my recent swap that an obd0 map sensor with a p28 ecu will not run the car. Mine started but it caused the car to turn off and on like crazy after running for a few moments. Just soemthing to try...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by y49crxsi &raquo;</TD></TR><TR><TD CLASS="quote"> I just found out with my recent swap that an obd0 map sensor with a p28 ecu will not run the car. </TD></TR></TABLE>

horseshit.

Honda map sensors have been standardized since the ice age.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by y49crxsi &raquo;</TD></TR><TR><TD CLASS="quote">What map are you running, map sensore that is. I just found out with my recent swap that an obd0 map sensor with a p28 ecu will not run the car. Mine started but it caused the car to turn off and on like crazy after running for a few moments. Just soemthing to try...</TD></TR></TABLE>

That's bs. I have a firewall mounted map sensor using a p28. Car runs great.

 

Just for ***** and giggles, i can swap the map sensor with the one that came with the swap. I honestly believe i have a conversion harness problem. The obd1 p30 i know is good, but it will not run it. The JDM obd0 pr3 will run it without the jumper harness. I need to just get off my ***, and order one of jasons harnesses.
Jason, is there any other way i can pay you other then paypal? I really do not have the 4 days it takes to wait for the cash to be deposited into paypal...
EDIT I have everything wired for OBD1 at this point. I repinned an OBD2a distributor plug onto the HF wire harness using service manuals, and ETMs for 90 CRX, and 97 civic. Fuel pump is priming, i have plenty of pressure at the fuel rail. I have good hot spark at the plug wires. If I prime a fuel source into the throttle body it runs, and dies shortly thereafter. Tomorrow when I get back to work on it I an going to check for injector pulse. Thanks for the ideas guys, keep them coming please...


Modified by acuratech at 4:49 PM 3/6/2005

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eda6 &raquo;</TD></TR><TR><TD CLASS="quote">

That's bs. I have a firewall mounted map sensor using a p28. Car runs great.</TD></TR></TABLE>

i also have the firewall mounted map with a p28...and my car runs awesome. i call bs on that

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Blown90hatcH &raquo;</TD></TR><TR><TD CLASS="quote">So go ahead and reinstall all the OBD1 stuff, knock sensor and O2 sensor. And you have no codes? Does the main relay come on? Fuel pump prime? What do the instructions say for distributor wiring? What is your distributor wiring set at?


He is running the OBD0 injectors, therefore he needs to continue running his resistor box.</TD></TR></TABLE>

you need to listen to this man...jason will help you ...but you have to listen to him in order to get help.

 

I always listen to what Jason has to say, but first things first, i need to get one of his harnesses so that i have a known good harness. At this point I trust this harness I have 0%.

 

Are your injectors stuck? Tap on those suckers or take the fuel rail off with the injectors intact and crank it to make sure they are firing.

 

I know they are firing, because i had the engine running on the OBD0 PR3. There isnt a doubt in my mind that your harness will fix it. I know without a shadow of doubt that thats whats wrong...

 

Thats weird, my car would not run good for more than 1 minute on teh obd0 map sensor, it was weird. I plugged in teh obd1 and it ran great. Must have just been my setup. Weird....

 

QUOTE=y49crxsi]Thats weird, my car would not run good for more than 1 minute on teh obd0 map sensor, it was weird. I plugged in teh obd1 and it ran great. Must have just been my setup. Weird....[/QUOTE]

maybe the obd0 map sensor was bad...[

 

OK, here is what I did. I just ran the 4 wires to the sensors in the engine bay for obd0. Plugged up the obd0 pr3, car ran fine, took it out hit vtec 1 time, and it threw code4. That is my fault, because i stink at soldering. I need to get a new HF engine harness, because I ganked the dizzy wires all up, thankfully it is only going to cost 150.00 new. As far as the obd1 conversion goes, i am going to hold off, and get a brand new obd1 del sol dizzy. Major props to Blown90hatch, sit his harness next to the boomslang, and the work looks way better on Jasons harness. Thanks Jason for the timely service on getting the harness to me..

By the way, i have to get some injectors too, these 1st gen injectors sound like complete ****...

 

Just an update...Swapped out the Boomslang harness for a JKOBD harness, B16 fired right up. Really pisses me off after hours of chasing damn wiring, and re-wiring back for obd0 ETC...

 

future reference boomslang =

jkobd =

 

 

blown90hatch harnesses