I'm doing a turbo install and am getting no power to my injectors. I replaced my odb-2 ecu with a chipped one from xenocron. On the first attempt to start it, it popped over once or twice. now it just turns over and their is absolutly no power getting to my dsm450cc injectors, but everything else seems to be working. what could be wrong?

 

absolutly no power getting to my dsm450cc injectors

do u have a resister pack?

 

no, but I bought the 10watt 10ohm resistors from radio shack.

 

well... there should be voltage to the injectors at all times, the computer sends a ground pulse to turn them on...hope this gets u in the right directions

 

check the main relay, ground on thermostat housing maybe. Do all the normal lights on the dash come on with the key on?

 

You should get power at the injectors even with bad thermo ground... although the ECU will refuse to function.

Check fuses, verify the resistor wiring, and OBD2 has a big plug (typically) under the IM that looks like it "deadends". If you pull the cap off the plug, you'll see it's really a big strip of metal pins that transfers power throughout the engine harness from a common feed... injectors, IACV, purge, etc. If that is uncapped, etc, it would cause that problem.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by J. Davis &raquo;</TD></TR><TR><TD CLASS="quote">If you pull the cap off the plug, you'll see it's really a big strip of metal pins that transfers power throughout the engine harness from a common feed... injectors, IACV, purge, etc. If that is uncapped, etc, it would cause that problem.</TD></TR></TABLE>

radio shack sucks!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fmfkid250 &raquo;</TD></TR><TR><TD CLASS="quote">

radio shack sucks!</TD></TR></TABLE>

You're going to have to explain that one to me.

 

All the supplies radio shack gets are "rejects" in the eletrical industry, they buy the all the stuff that just dident quite make it and sell it for mad loot, im talken about resistors,transistors,,and so on...

 

Thanks for the replys.
i possibly wired the injectors wrong because of the very little amount of color differences in the wires. could this blow out my injectors or mess anything up in my ECU that would not allow power to the injectors anymore?

 

it could pop a fuse,

where did u put the resistors in at?

 

bump cuz i'm having the same problem with obd1 injectors....

 

on your dead end connector is the cap pluged in still? when i did my engine swap and turbo install i forgot to put it on the new harness and it wasnt getting power. i popped it on and it started right up

 

please give some proof of these reject parts. its funny how 5 years ago, everyone used the 10w 10ohm resistors from radioshack and no problems. you should back up your words.

 

i will try to get pics up tonight of what all i did to help show you a lil more

 

I am a year away from a double E degree and my professor is a biomechanical enginer. thats where i got this information from. Thats good enuff for me to stay away from there,
i mean what is a 10ohm 10watt +or -10%
not very sig, but if one where to fail its not worth taking out a $2200 bottem end for a $0.19 resistor

that my .02 i would highly recomend getting a resistor pack off an accord on 91 teggy

 

well i know i wired the resitors to the right wires on the main harness, (yellow with black stipe) i just dont know that i wired the other end of the resistor to the correct wire on the injector. funny thing is, the motor actually fired on a few cylinders, but on the next crank, absolutly nothing. im just afraid i blew the injectors??!! and now im not getting any power from the wires going to the injectors. jeez, the ***** realy hittin that fan now

 

did you power a ground for an injector?? you probably fried the ecu as it sends ground pulses to pen and close the injectors ....

 

Dumb question, but is your fuel pump priming?

Pull the injectors and test them each with a 9v battery. You'll be able to hear a very light 'click' if they're working.

Also, open the ECU and see if anything looks burnt.

 

if you where to short them you would have poped a fuse, in ur under hood fuse box

 

We took a quick look at the fuses and none of them seemed blown. the fuel pump is opperating and we couldnt smell anything burning from the ECU

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fmfkid250 &raquo;</TD></TR><TR><TD CLASS="quote">All the supplies radio shack gets are "rejects" in the eletrical industry, they buy the all the stuff that just dident quite make it and sell it for mad loot, im talken about resistors,transistors,,and so on...</TD></TR></TABLE>

Ehhh...No. This is NOT true at all.

While not all parts can be tested, batch testing is done. Any one supplier is as likely as the next to get a batch of parts that have a few bad ones in it.

 

did you make sure someone didnt pull the cap off thei njector power plug on the driver side by the firewall? they wont get power if you pull the capp off that gray plug...

 

well i feel like such a jackass, we checked the fuel fuse and it was blown...replaced it and it started right up. Thanks for all of the comments you guys are great.