Swap Issue
 

I just got done swapping a b20b on to a civic (not my first swap) but i have an issue where when i turn the key on to the ON position the check engine light wont turn on and the fuel pump wont prime. Its like if i had no ECU plugged in. i have tried an OBd2 LS ecu and my own P28 ECU. can anyone guide me into what else i should look at. Also i have even added new grounds just to make sure that wasnt the issue but no go

Re: Swap Issue
 

do you get power at all?

Re: Swap Issue
 

Did you reconnect the G1 battery, G3 transmission and G101 thermostat ground wires?

Re: Swap Issue
 

What is your year/make/model?

Re: Swap Issue
 

Did you check the main relay? My problem was fuel pump wires

Re: Swap Issue
 

this.

Re: Swap Issue
 

Main relay?

Re: Swap Issue
 

its a 1999 civic hb and yes all those grounds are connected

Re: Swap Issue
 

when i turn the key to the ON position all the other light turn on oil light, e brake, battery light but nothing for the check engine.

Re: Swap Issue
 

So what if they're connected? Do you know how many times someone says that, goes back to check and the problem was their grounds after all?

Make sure the grounding surfaces are clean and not just connected. Take a wire brush or sandpaper to them.

Re: Swap Issue
 

yeah i also already did that and no luck

Re: Swap Issue
 

i would try to see if a friend will let you borrow their main relay. see if that is the problem. also check the fuses!

Re: Swap Issue
 

I tested all my ground connections and they are all good (with a test light testing on the surface and the wire). i have also tried to the main relay and still no change... anyone else have any tips on what too look for next???

Re: Swap Issue
 

a bad ignition switch could cause this.

was the car running before the "swap"?

Re: Swap Issue
 

So any rapid clicking when you try to start it or just literally nothing ?. can you try another main relay just in the chance this one is bad(I know you said you checked it).

Re: Swap Issue
 

No rapid clicking nothing. i can hear the main relay click. and the other main relay i tried is off my other 99 civic so i know its good.

also the car was running before and for a few days after the swap.

Re: Swap Issue
 

only thing I can think of is something is unplugged or got ripped when you removed or installed the engine. I'm not calling your work sloppy these harness can get brittle after the years happened to me, replaced it with a Rywire one just trace the starter plugs and the wires around the ECU and firewall. 2nd did you say the CEL doesn't come on for a few seconds at pre start up ?

Re: Swap Issue
 

that is correct the cell light does NOT come on for the few seconds or ever lol

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i can post a video of what the car is doing i just dont know how

Re: Swap Issue
 

upload it on you tube then copy n paste on here. is the bulb working/there ?. 2nd this is a what year civic ? with a what year engine ? and obd2 to obd1 jumper being used ?

Re: Swap Issue
 

will do one sec

Re: Swap Issue
 

ok video finally uploaded on youtube


https://www.youtube.com/watch?v=8em1...ature=youtu.be

Re: Swap Issue
 

I am not getting power to the terminal of the main relay which feeds the fuel pump (i think its 7) when the key is on the on position.

I found this page to be helpful but it does not tell me what fuses are illustrated on the images http://www.tegger.com/hondafaq/mainrelayoperation/

Can any one help me out???

Re: Swap Issue
 

I have checked and rechecked all the fuse on the car both under the dash and under the hood and they are all good.

Re: Swap Issue
 

grounds. quadruple check every one.