nels00n

do all b20s have crank positon sensors?

does a obd2b car need the crank position sensor to turn on?





http://www.ff-squad.com/tech/wiring/

boostedcivicsir

#1 yes
#2 iirc, it needs that sensor when the engine misfires. to let the ecm know where the misfire is coming from. i could be wrong. you do not need the ckf sensor, when using an obd1 ecm.

nels00n

i just bought a jdm b20b and there is no crank sensor ?? -__- idk im running a em1 ecu. my previous motor (b18b) ran perfect. and the b20b doesn't stay on unless its helped and doesn't accelerate right and its been backfiring.

4d96gsr

U could always by pass the Crank position sensor there a link for that but b20b from japan don't come with crank position sensor only American b20z...

4d96gsr

Or get a jumper harness obd2 to obd1 and u don't have to worry about it

nels00n

should it still turn on regardless if im running a em1 ecu?

4d96gsr

It should but with a check engine light or u running a b20 vtec setup or straight b20?

nels00n

it turns on but it wont stay on unless i help it stay on as in play w the throttle body to keep it on. and when try to accelerate it it misfires and it doesn't rev right it boggs out. would the crank position sensor cause that? the em1 ecu asks for it but i dont have one on the b20b

and are you guys sure that jdm b20b dont come w crank position sensors?

4d96gsr

Have u checkd ur firing order?

nels00n

k i jumped the crank sensor and i noticed i had 2 of the inj plugs mixed up LOL and now it sounds a little better. but its still iffy.

by firing order you mean are my spark plug wires in correct order? if thats what you mean then yes. it doesn't studder that bad now when i rev it but it still missfiring and other thing. im running a em1 ecu would that cause a big issue?

o and its a bone stock 96 jdm b20b w ls trans in a 00ek. and im running em1 harness and ecu.

one more thing my friend just noticed that the b20b has 9 cables and the harness has 8 was i supposed to swap out the b20b dizzy for a ls dizzy?

nels00n

also would it matter if 1 of my spark plug wires is incorrect. as in my cyl3 wire is wrong. i have a cyl2 wire on it also? my friend thinks it shouldn't matter but idk. lol

4d96gsr

Atlongest ur firing order is good no problem 1 3 4 2 ur gonna have check engine regardless because it's gonna ask for vtec pressure switch and sinaloid etc

4d96gsr

Y don't u just get a jumper harness from obd2b to obd1 and run it with a ls ecu

Arthas

What car is the B20B from?

nels00n

ok cool thanks for all the help man.
im planning on doing this when i get.
lol idk a jdm crv from japan? lol i bought if from jdmtechmotors here in orlando for 426 w tax.

Arthas

I paid about the same for my B20B.

So I dont need to worry about the CPS?

boostedcivicsir

didnt read everything. JDM engines are obd1 based ecms. no ckf. so if you are running the jdm ecu you wont need the ckf. if you are using a domestic based ecm and need to retain obd2 you will need to do an oil pump swap.

nels00n

talk english lol cp?
im running a usdm em1 ecu i put that up already. i jump the crank sensor. and by the end of this month im going to do the obd2b to obd1 jumper harness conv w a p75.


********figured out my prob. the inj where a little messed up they wheren't throwing sufficient fuel the sensor in the back of the mani was clogged up. its purring and running good*******

thanks for the help everyone if any fishy stuffs happens ill post up.

boostedcivicsir

cps. crank position sensor.
ckf. crank fluctuation sensor.
one in the same. different manufacturers have different vernaculer.(sp?)

same deal though.

nels00n

k thanks