ok i just bought a 91 crx that the lady before me had swapped an SOHC zc motor into. i hauled it to my house and startin wrenching on it when i found out she had wired in a HASPORT obd to obd1 sub-harness...it rotates but wont start. its got no spark and no fuel? anyone have an idea? please?


Modified by DAtegLs at 11:49 AM 7/4/2008

 

maybe gas...

 

I am a little confused about this part:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DAtegLs &raquo;</TD></TR><TR><TD CLASS="quote"> i hauled it to my house and startin wrenching on it when i found out she had wired in a HASPORT obd to obd1 sub-harness</TD></TR></TABLE>

Does that mean you were suprised to find it? or does it mean you found it and removed it and now it doesnt work? Did it ever work? What ecu are you running? I could go on, but lets start with that..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sanimalp &raquo;</TD></TR><TR><TD CLASS="quote">I am a little confused about this part:
Does that mean you were suprised to find it? or does it mean you found it and removed it and now it doesnt work? Did it ever work? What ecu are you running? I could go on, but lets start with that.. </TD></TR></TABLE>

LOL!!! Good Point

 

haha...yes i was suprised to find it...no i didnt remove it...no it never worked...and now im running a p28 from an old d16z6...she had a pr4 and a pm6 sittin on the floorboard...neither of which would work to begin with.

 

bump

 

have you tried to unplug the obd1 conversion harness and tried the pm6 to see if it would run obd0.

 

If you are running obd1 you need to cut the resistor box plug and twist the wires together

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jedb18 &raquo;</TD></TR><TR><TD CLASS="quote">If you are running obd1 you need to cut the resistor box plug and twist the wires together</TD></TR></TABLE>

no you dont. If you use low impedance injectors with the obd1 computer and a resistor box, there is no difference if you were running high impedance injectors with no resistor box and obd1.

the only factor is what injectors he is running.

you should try to run the zc with the pm6 as someone mentioned. If it is an obd0 to obd1 jumper harness, just remove the harness and plug in the pm6. if the harness is hardwired to be a obd1 conversion (which acording to you, it isn't), then check to see if the p28 has been chipped. IF it hasn't, then you need to get it chipped with the zc stock map.

You also need to test the resistance of the injectors to figure out which ones are in there, unless you know for sure what already is in there. They should be low impedance, so as long as you have a resistor box installed, your injectors should work. If there is no resistor box, then you should be running high impedance injectors with the p28.

the cliffs notes are:
1. check for a resistor box. If there is one hooked up as normal, you should have low impedance injectors installed.
2. test the resistance of the injectors to see if they are high or low, and make sure the existance or lack of a resistor box matches whether you have low or high impedance injectors.
3. remove the conversion harness and install the pm6 if you can, because that is the ecu most closely related to that engine. if the conversion harness is hardwired to be obd1, then you need to get the p28 chipped with a zc map and run it instead.


Modified by sanimalp at 1:42 AM 7/5/2008

 

well i talked to the chick that i bought it from and she had sent in the stock wire harness to Hasport and had them convert to use with the zc...the jumper harness is hardwired in and there is no resister box. what sucks is she doesnt know what injectors she has in it. also its got a new fuel pump, plugs, wires, rotor button, and dizzy cap. though fuel doesnt even get to the filter. i get a constent CEL to. shes got two resister boxes in the trunk so im gunna try to plug one of those up and see if anything changes.

 

are you running a obd1 dizzy?Local guy had a similar problem,what happened was he changed everything to obd1 but the dizzy?Just a thought

 

so now we know the wire harness can't be changed easily, you need to figure out what injectors are being used. just get an ohmmeter and reply with what resistance you come up with. then from that resistance, we can figure out whether you actually need to be using a resistor box.

 

will do.

 

well i threw in some high impedence injectors out of my 91 hatch and plugged up my pr4 ecu and got spark and now i get a code 16 instead of a constent CEL. im not hearing the fuel pump cut on so ima throw another main relay in and see what happens.

 

before you buy a new main relay, you can test it to see if it is bad. If it comes up bad, you may pop it open and resolder all the joints and then retest it.

It involves a little more work on your part, but it will save you quite a bit of money, even if you have to buy a soldering iron. The solder joints are huge too, so even if you have never soldered before, you can for sure handle it.

 

yeah i had to resolder my integra's main relay...but im just gonna use one my friend has layin around.

 

well the pump still isnt kickin on so im rippin the harness out and checkin every wire and every plug...hopefully they just got some wiring wrong or something...im also going to rip that obd1 jumper out for right now...so ima have some fun today!

 

You know come to think of it my obd0 b18 in my crx is not running a resistor box. But I am just throwing a code 12 and 43...
How do I check my injectors to see what they rate? Anyone care to share on how to test my injectors????

 

By the way sorry for cutting in on your thread.

 

just unclip one (or more if you want to test them all) of the injectors, and set your multimeter to the ohm setting. If it has more than 1 ohm setting, 0-100 ohms is good.

If you have obd0 injectors, they should read somewhere around 2-3 ohms resistance.

obd 1+ injectors are between 10-12 ohms.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sanimalp &raquo;</TD></TR><TR><TD CLASS="quote">just unclip one (or more if you want to test them all) of the injectors, and set your multimeter to the ohm setting. If it has more than 1 ohm setting, 0-100 ohms is good.

If you have obd0 injectors, they should read somewhere around 2-3 ohms resistance.

obd 1+ injectors are between 10-12 ohms. </TD></TR></TABLE>
Doing this with key off? Thanks

 

yeah, car should be off, battery disconnected just in case.

 

well i finally got around to doin work on Project Honda...and then went to Cali for a couple weeks...before i left i ripped out the jumper and pretty much started over with a new harness. i plugged an obd0 p28 into it and dont get any codes. i tested the relay and its fine and im gettin power to the fuel pump so im guessin its the actual pump itself. im buyin one off a friend when i get back home from Cali. hopefully she start and quit pissin me off! thanx for the help so far.

 

Well I finally got around to checking my resitance on my injectors...they are reading 12.3 so I guess I am running obd1 injectors. Soooo I guess this is not why I am throwing a code 43...


Modified by harmonator84 at 12:09 PM 8/4/2008