b18c1 obd2b engine into a 94 del sol
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Joined: Sep 2004
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b18c1 obd2b engine into a 94 del sol
I am having problems with the wiring on a swap i am neck deep on.
here's the short of it. I have a 94 del sol sohc p28. engine died. I bought a '00 gsr swap with a p72 obd2b ecu (3 rows 3 plugs not 2 rows 3 plugs). engine is in the hole all hooked up, linkage is modified, axels, exhaust, cooling, all done.
the problem lies in the wiring. I have all of the gsr harness except the steering column with ign. switch. I have tried a couple of different wiring configurations
1.) use all of the harness that came with the engine and change the ign. switch plug around. also with this configuration nothing really matched up in the instrument cluster, lights were on that shouldn't. plugs matched functions didn't. need i say, didn't work, no cranky over
2.) I went back to using the old (p28) harness, and splicing it into the gsr harness. everything from the ecu (p72 p2t) to the engine bay was gsr. wires coming from the ecu going to the driver's area were function matched into the old harness. wires coming from the drivers area going to the engine bay were function matched to the gsr harness. had extra wires, as to be expected. with this configuration when i turn the key i hear the fuel pump, and the engine turns over but does not start. no spark, no injectors.
I live in an area that has smog testing, so a chipped p28 i believe is out the question. have done plenty of searching but found little to nothing on p2t ecu's.
would appreciate help. of course something more than the standard obd2's suck. as a reply
Thanks
here's the short of it. I have a 94 del sol sohc p28. engine died. I bought a '00 gsr swap with a p72 obd2b ecu (3 rows 3 plugs not 2 rows 3 plugs). engine is in the hole all hooked up, linkage is modified, axels, exhaust, cooling, all done.
the problem lies in the wiring. I have all of the gsr harness except the steering column with ign. switch. I have tried a couple of different wiring configurations
1.) use all of the harness that came with the engine and change the ign. switch plug around. also with this configuration nothing really matched up in the instrument cluster, lights were on that shouldn't. plugs matched functions didn't. need i say, didn't work, no cranky over
2.) I went back to using the old (p28) harness, and splicing it into the gsr harness. everything from the ecu (p72 p2t) to the engine bay was gsr. wires coming from the ecu going to the driver's area were function matched into the old harness. wires coming from the drivers area going to the engine bay were function matched to the gsr harness. had extra wires, as to be expected. with this configuration when i turn the key i hear the fuel pump, and the engine turns over but does not start. no spark, no injectors.
I live in an area that has smog testing, so a chipped p28 i believe is out the question. have done plenty of searching but found little to nothing on p2t ecu's.
would appreciate help. of course something more than the standard obd2's suck. as a reply
Thanks
I am tehguy... OH YEAH!!
Joined: Jun 2003
Posts: 1,955
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From: LA
I dont feel like re-reading the whole first post so...
You can use either the OBD1 or OBD2 harness on your motor seeing as most of th plugs will fit. Once all plugs are in then you will use an OBD1 P72 seeing as your car was originally wired as an OBD1. You will then have to run a few wires. For the knock sensor I just ran a pin from the sensor all the way to the ecu harness. You might also have to run your VTEC wiring if your car didnt have it originally. And for the secondaries working... Im still trying to get mine to work
You can use either the OBD1 or OBD2 harness on your motor seeing as most of th plugs will fit. Once all plugs are in then you will use an OBD1 P72 seeing as your car was originally wired as an OBD1. You will then have to run a few wires. For the knock sensor I just ran a pin from the sensor all the way to the ecu harness. You might also have to run your VTEC wiring if your car didnt have it originally. And for the secondaries working... Im still trying to get mine to work
Thread Starter
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Joined: Sep 2004
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why yes it is.... (99-00) first years
as an update... went the route of the obd1 p72, works good, but one new problem... I have no injector in the crank circuit. I have them in the run circuit but not the crank. basically, if i dust the air filter with starting fluid it starts
. no spray no start 
. does anyone have an idea?
as an update... went the route of the obd1 p72, works good, but one new problem... I have no injector in the crank circuit. I have them in the run circuit but not the crank. basically, if i dust the air filter with starting fluid it starts
. no spray no start . does anyone have an idea?
Teal Hatch Cult Member
Joined: Apr 2003
Posts: 547
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From: Chicago Burbs
are you sure the ECU is getting the right power feeds from the key?
there is one line for power, so the ECU remains powered in crank despite lots of other things in the car that are not powered. Make sure the power doesn't go away when you're in crank.
your ECU fuse on the underhood fuse box may be wired wrong also... if it's only powered in Run the car will never start. (same problem, different area)
there is one line for power, so the ECU remains powered in crank despite lots of other things in the car that are not powered. Make sure the power doesn't go away when you're in crank.
your ECU fuse on the underhood fuse box may be wired wrong also... if it's only powered in Run the car will never start. (same problem, different area)