EJ6Civic27

iTrader: (1)

Just swaped a B18 LS motor into my car. B18a1 block, B18b1 P75 head, chassis is a 2000 Civic LX (originally had a auto d16y7, did a 5spd and mini me swap previuosly). Im using a P75 OBD2b ECU. I have no spark, and no fuel. I re-pinned the fuel pump for the ECU, and the main relay is clicking on/off. Now, I dont have any 02 sensors plugged in, and when I turn the key over to accessory (so the dash lights come on), and theres NO CEL. I also have no radio, and my aftermarket (AutoMeter) electric oil pressure guage wont turn on. Anyone have any ideas? Ive checked everything, and everything is plugged in (except for the two o2 sensors).

EJ6Civic27

iTrader: (1)

I have a feeling its something w/the Immobilizer. Any ideas?

Jimster480

what immobilizer?

JohnnyWash1

Did you check the all-important ground wire to the t-stat?

Matt93eg

Yeah check that ground like he said. I have heard people the grounds don't matter. But I hooked the T-Stat ground up and hand screwed the bolt in a few turns and forgot to go back and tighten it down secrurely and I go to start the car and the Fuel Pump wouldn't start. I re-checked everything I had worked on that day to find I never fully tightened the T-Stat ground..did that and it was the culprit.

R666_EK

Try an ECU without an immobilizer. 00-01 LS's have immobilizers too.

EJ6Civic27

iTrader: (1)

Just tried to start it with my old P2P ECU (D16Y8), and now I have spark and fuel. It still wont start, and I still dont have a radio or power to my guage. Im guessing the radio and guage is something completely different (like forgetting to ground them out or something stupid). I did a compression test, and I have a good 120-140PSI per cylinder. It turns over like it wants to start, sputters like its going to start, then keeps turning over like it wants to start. Any ideas?

Jimster480

ya um, u sure that your spark plug wires are in the right order? i had that problem on my motor when i first dropped it in, because it was a Z6 head and I thought it was a Y8 because I didnt know any better and he told me it was. But the wireing order is different so it wouldnt start.

KaiPerrigo

off subject but did i read correctly a p75 head on a b18a1 block? what year? I have a 1991 B18A1 in my 1991 CRX and was wondering would a p75 head fit and work?

Jimster480

yes