no start

quest4power · Post by **quest4power** » Sat Apr 12, 2008 9:34 pm

so i got the 4g harness all wired up...so i think. i went to turn it over and i'm not getting any injector pulse. the main relay kicks in and the fuel pump comes on. i do have power to my coils and my injectors.

the only wires i have hooked up to the b38 is the backup ecu power and the 12v switched blue wire to 102 on the ecu. did i miss something?

75COLT · Post by **75COLT** » Sat Apr 12, 2008 9:59 pm

injector resistor in place? small little metal looking box with pig tail trailing off.

quest4power · Post by **quest4power** » Sun Apr 13, 2008 11:46 am

yep, resistor is plugged in anyway. and like i said i do have power to both the injectors and coils

Bill Hincher · Post by **Bill Hincher** » Sun Apr 13, 2008 11:51 am

you can not ground the engine to the car too much. it is 1/2 of the whole wiring harnes

make sure and have a large ground strap frm the engine to the frame and from the engine to the body

quest4power · Post by **quest4power** » Sun Apr 13, 2008 12:38 pm

oh she's grounded lol. i just did some checking and have power/ground and 5v ref to my cas. i guess i'm gonna try to check the resistors next. if anyone thinks of anything, lemme know

Bill Hincher · Post by **Bill Hincher** » Sun Apr 13, 2008 1:01 pm

check and see if you have power on both sides of your injector, the ECU grounds the injector, if power is on both sides of the injector, that means the injector /resistor/ power lines are good, but in order to power the injector, you need to ground it , through the ECU, so make sure your ECU is grounded also

quest4power · Post by **quest4power** » Sun Apr 13, 2008 1:14 pm

looks like i got power on both sides of the injector. and the resistor looks on. it's all ohm'd out to 7ohms.

75COLT · Post by **75COLT** » Sun Apr 13, 2008 1:40 pm

ecu not pulsing injectors? maybe ecu is bad? have you tried another ecu? have you checked the caps in the ecu for leakage? sorry for all the general questions just trying to help.

quest4power · Post by **quest4power** » Sun Apr 13, 2008 1:55 pm

well i went and checked all my grounds comming out of the ecu...they all look to be grounded. didn't really check take a good look at the ecu but when i looked at it, it seemed ok. and i don't mind the general questions...i'm human and i've looked over some pretty obvious things before. well guys. thanks for the input, if you have any more i'd love to hear it. i guess i'm gonna try and find an ecu now.

quest4power · Post by **quest4power** » Sun Apr 13, 2008 2:38 pm

FOUND IT!!! main relay wasn't kickin on all the time. it was real erratic. when i went to unhook the relay the whole thing just separated from it's housing. i replaced it and it fired up. i can't get the thing to idle but at least it's working

75COLT · Post by **75COLT** » Sun Apr 13, 2008 5:49 pm

cool man. glad you found it and that it wasn't to expensive.

quest4power · Post by **quest4power** » Sat Apr 19, 2008 12:00 pm

now i'm back to a no start with no spark or inj pulse damn it all

quest4power · Post by **quest4power** » Sat Apr 19, 2008 5:07 pm

ok...yet again...fixed. the guy i got the harness and ecu from gave me a 90 harness with a 91-94 ecu...that was nice of him. so it runs but it idles like its got a bad vacuum leak. it'll idle up...sounds like it cuts out and the idle drops, then idles up and does it all over again.

and i'm still having problems with it shutting off. i gotta pull the ground on the battery every time