Jump to content
Delcowizzid

Holden 304 turbo storm ecu

Recommended Posts

Hey guys I'm just finishing off a wiring job that someone did a mare of a job on with housewiring in the mix and a lot of fail lol.

ive fixed all the bodgy stuff and done some initial setup for the VT sequential distributor (brandnew)and link single channel ignitor  ,injectors etc .

Got spark via ignition test function

all injectors wired in sequential mode some injectors click nicely when tested some sound like they are galloping instead of a steady tick.

The big problem is when I crank the engine the spark is delayed for a second or so before it starts arcing to earth out of the coil lead and when I stop cranking and the engine stops moving the coil keeps sparking for a couple of seconds probably sparks at least 8 times while the crank isn't moving  not ideal 

Thanks guys Any ideas

Ps not my first link rodeo I've used a lot of them before with no issues on sr's and rb's and 1uzfe but first time on a 304 I normally tune the stock Delco ecus for boost hence the username 

Share this post


Link to post
Share on other sites

Sounds like there might be a bad ground or a ground offset somewhere.  Are the main ECU grounds connected to the block?

What ECU do you have?

Share this post


Link to post
Share on other sites

thanks for the reply.its a new g4+ storm dual plug ecu i will get the serial number off it in the morning .

i have the 4 earths run to 2 seperate locations about 2 inches apart on the front of the block the ignitor earth wire is earthed to the body on one strut tower bolt temporarily while i finish tidying up the mess and finalise placement of the ignitor and coil.

Share this post


Link to post
Share on other sites

Was out in the shed doing the trigger scope .I have not primed the fuel system yet so there's no fuel but I will turn it off to stop the injectors getting hot.heres the ecu information window with serial number and current firmware etc and the scope trace even the scope trace takes a while to show anything but shows 8 pulses plus 1 sync pulse .I'll uoad a video to YouTube shortly of the spark output

20190411_143310.jpg

20190411_140121.jpg

 video .it will probably run but I'm not keen to try with rogue sparks happening inside the distributor cap at random times lol

Share this post


Link to post
Share on other sites

Ok, that looks fine to me.  I suspect the delay before spark you are experiencing is normal.  This is because the ECU must see the single "sync" tooth in the dizzy before it can spark.  Depending on where the engine stopped that is potentially worst case two crank revolutions before it knows which tooth is #1 so it can spark.  The continued spark after the cranking stops however shouldnt happen so something a bit fishy there still.  But from the info you have given so ar I dont see any reason why it wont go.

Share this post


Link to post
Share on other sites

In the video it looks like that last spark that it spits out is just because the engine keeps turning for a bit after the starter stops isnt it?

Share this post


Link to post
Share on other sites

No it stopped and then spat out 3 or 4 sparks .

Next issue fuel pump output positive switching won't trigger my relay and if I set it up negative switching and swap the other side of my relay to power my fuel pump runs when I turn the key off cause the link defaults the transistor to earth .the relay is in the rear where the battery is so I can't easily add switched ignition to the rear to stop it triggering with key off unless I run yet another wire 

How much current can the link output surely enough to trigger a relay coil ?

Share this post


Link to post
Share on other sites
31 minutes ago, Delcowizzid said:

How much current can the link output surely enough to trigger a relay coil ?

Only Aux 5/6/7/8 can do high side drive.  0.5A.  

Share this post


Link to post
Share on other sites

Thanks mate I ran switched 12v to the relay in the back.she runs sort of all be it badly but I'm stuck till I have another pair of hands tomorrow to help crank it while I adjust the dizzy to get timing closer to correct .that's all I needed to confirm before bolting it all together for its final time.

43167765_10210422299468431_2832250255599206400.jpg

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

×
×
  • Create New...