I have 1991 civic shell, swap to 1994 del so jdm ingine,
Please help with the harnesses, ECU from original OBD0 to OBD1, wire was modified from the people i bought the ECU, has extra ten wires, i know some of them where they go, but does all ten need to be hook up?
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Yes. No crank sensor signal usually means no spark. The ecu has to receive crank position to set spark timing. I think you've really hit a big problem. You may need to get in touch with some people who have done this mod. I've always heard it's best and easiest to swap the engine with its ecu and the wiring harness into another car. Or something more compatible with that jdm engine.
the easiest, most direct swap is to get a 96-98 b18c1 USDM GSR motor. go to hmotorsonline.com if looking for motor. If you get the USDM harness, you won't have to cut/add wires because of the RHD issue. for the swapHmotorsonline.com and you can contact them with any questions and they will walk you through, i would ask for steve if he still works there. hope this is helpfu if so please leave positive rating.
The swap is easy but too much to post here. I will fit into any civic 89-00 with the right aftermarket mounts from hasport or just go to ebay. The engine harness can be purchased at a local juck yard if you don't have a harness with 4 injectors. I you have only two injectors then the harness will need to be modified with vtec wiring and ad the other 2 injectors. Any 90-93 integra axles will fit as long as you use the halfshft. Must be manual. and use a modified shif linkage from ebay. Youmust take off the caps behind the civics hubs. Use a PWO or PR3 ECU. Good luck.
Some questions you need to know are what year head is the LS. Did you use the LS Intake manifold and throttle body. Problem is if you didnt use a OBD1 LS and it is OBD2 or OBD0 The Throttle position sensor wont allow the engine to start. Same with the Distributor, because your crank angle position sensor is in your distributor and a OBD1 ECU can communicate withe OBD0 or OBD2
If it is all OBD1 Then I would do a compression and Cyl. Leak down test.
Is it an OBD2-generation b16 engine (96 or newer)? If so, are you using the ECU from the car the engine came out of? You'll need to if you aren't, and you'll need the engine bay harness from it as well for things to work perfectly. Have you tried looking for an idle speed adjustment screw? My 300ZX has one on the idle air control valve, and it allows the idle to be adjusted manually. On my 99 Audi A4, I have to use the VagCom computer diagnostic system to adjust idle. I'd imagine on the Civic you can do it with an adjuster screw. Unfortunately I'm not sure where that is - check out www.civicforums.com and I bet you'll find it there though - that site has a wealth of knowledge and more than a few guys running motor swaps.