Author Topic: ignition module problems (Read 14835 times)

barryv · « **Reply #15 on:** December 19, 2010 - 10:33:21 AM »

i know i am asking alot of questions,hopefully the last question is the ballast wires that you say get joined are there any particular wires that get joined together,thanks

72rtchallenger · « **Reply #16 on:** December 19, 2010 - 01:35:29 PM »

Quote from: barryv on December 19, 2010 - 10:33:21 AM

i know i am asking alot of questions,hopefully the last question is the ballast wires that you say get joined are there any particular wires that get joined together,thanks

if you look at the one picture with the ballast wires on this site http://duster318.freeservers.com/tech/hei.html it lets you use the hot wire off the ballast and make sure of the jumper wire ,,you do away with the ballast but you can keep useing the wires for the ignition and voltage regulator that were once to the ballast,,all you really do is unplug the ballast and install a jumper wire as in the diagram,,then you make a wireing harness for wires to the distributor to module then module to coil and if there hooked up right your car will fire right up,,just regap the plugs .045 ,,takes less than an hour to make with all the materials in hand,,and mount the module to heat sink,,in my case i took a 1/4 inch thick piece of aluminum and mounted it to were the ballast was and attached the module like this and i also broke the pins off the stock ecu and left it pluged up for the stock look

Ballast Resistor Bypass Diagrams

connect the wires on the distributor side (16 or 18 Gauge) to the matching wires on the control unit, making sure to size the wires so the unit will fit where you want it in your car. Then, using some parts store connectors and 14 Gauge wire, connect the Red wire as shown in the wiring diagram to the Terminal Marked "B" on the ECU, and then connect the other side to the positive side of the coil using a ring terminal. Then take another connector with a black wire and connect it to the "C" Terminal on the ECU, then to the negative side of the coil, and make sure the dark blue wire is connected to the Positive side of the coil. It is a good Idea to solder any splices, and solder the ends of the wires in to the terminals, then electrical tape the entire harness and route it to keep it away from any heat (exhaust, Intake manifold, Valve covers, etc�) Mount the ECU where you feel comfortable with it (it must be grounded), and use some heat sink on the back of the ECU (on the metal part). Then try to crank her

these diagrams
http://duster318.freeservers.com/tech/7-pin_s.jpg http://duster318.freeservers.com/tech/ballast_s.jpg

barryv · « **Reply #17 on:** December 19, 2010 - 03:14:35 PM »

thanks for all the info. i will try it in the next month or so. i put the store bought module as well as 2 used ones i had that wouldnt run well in my cuda and put in my roadrunner and they ran fine. it doesnt make sense to me. i do have a 4 prong ballast hooked up with all wires attached to it.could this be the cause of the cuda only running with the old orange module,thanks

72rtchallenger · « **Reply #18 on:** December 19, 2010 - 03:31:02 PM »

ballast could be some of the problem,,easy enough to swap,,check the new box to be grounded good also

but since i swap mine out to the module have had zero problems and the swap is easy,,just seems complicated its really not bad

barryv · « **Reply #19 on:** December 19, 2010 - 04:32:58 PM »

i have an extra ground wire to module on firewall.ballast was recently replaced. i am going to try the hei in the future. i am not sure about the ballast bypass when doing the hei conversion,thanks

71Demonz · « **Reply #20 on:** January 06, 2011 - 06:57:43 PM »

I've installed the GM- HEI unit on my 71 Barracuda. It has a new distributor with magnetic pickup and a new MSD blaster 2 coil.

I can not get the car to run. Sometimes I will get the motor to fire and get spark for about 1-2 seconds then nothing but crank. I have good voltage going into the HEI unit, at least 10 1/2 volts during crank.
However, the voltage going to the Distributor is reading only 1.25 volts. Does anyone know what the required voltage out of the HEI unit and going to the distributor is supposed to be?

I have been through two GM-HEI units and 2 coils trying to chase this problem. I checked continuity between all my wires and I am at a loss.
Thanks for any help.
Steve

72rtchallenger · « **Reply #21 on:** January 06, 2011 - 07:55:08 PM »

Quote from: 71Demonz on January 06, 2011 - 06:57:43 PM

I've installed the GM- HEI unit on my 71 Barracuda. It has a new distributor with magnetic pickup and a new MSD blaster 2 coil.

I can not get the car to run. Sometimes I will get the motor to fire and get spark for about 1-2 seconds then nothing but crank. I have good voltage going into the HEI unit, at least 10 1/2 volts during crank.
However, the voltage going to the Distributor is reading only 1.25 volts. Does anyone know what the required voltage out of the HEI unit and going to the distributor is supposed to be?

I have been through two GM-HEI units and 2 coils trying to chase this problem. I checked continuity between all my wires and I am at a loss.
Thanks for any help.
Steve

can you show how you wired it up ? a diagram perhaps,,maybe you have a wire switched or something,,and did you put a jumper wire to bypass the ballast? and how did you mount the unit,,the hei module has to be grounded to the frame or something,,i ran a wire to the mounting bolt

nqkjw · « **Reply #22 on:** January 06, 2011 - 09:06:47 PM »

Try swapping the 2 dizzy wires around.
Very often the cause of no fire with new installation.

71Demonz · « **Reply #23 on:** January 06, 2011 - 09:16:41 PM »

I'm sorry I don't have any pictures.

I joined the Ign. #1 (dark blue) wire and the Ign. #2 (brown) wire together, this wire goes to the "B" terminal of the HEI and then to the positive side of the coil.

I have a wire going from the "C" terminal of the HEI to the negative side of the coil.

I have a wire going from the "G" terminal of the HEI to the negative side (black wire) of the distributor.

I have a wire going from the "W" terminal of the HEI to the positive side (orange wire) of the distributor.

I also have the HEI mounted on an aluminum plate and grounded with a ground wire to the frame through the mounting holes.

I did try swapping the "G" and "W" terminals just in case they were backwards, I didn't get any spark doing that.

Whats is frustrating me is I will get spark (monitored with a timing light) every once in awhile, but not consistently. It will last for 1-2 seconds and the engine sounds like it will come alive, then nothing, no spark.

I've tried two different HEI modules, a AC Delco D-1906 and a Standard LX-301.
Frustrated

72rtchallenger · « **Reply #24 on:** January 07, 2011 - 06:31:10 PM »

try running a ground directly to the negative side of the battery then to the mounting bolt,,also start a new thread about this,,it will help get others to give advice that may have already disregarded this thread

barryv · « **Reply #25 on:** January 09, 2011 - 09:01:52 PM »

my car barely ran after trying everything i knew of after installing hei module. when engine was barely idleing i loosened distributor and slowly moved it and then it was running very good. havent had a problem since

UKcuda · « **Reply #26 on:** January 10, 2011 - 03:27:25 PM »

Quote from: barryv on December 19, 2010 - 10:03:30 AM

i have an accel yellow square type coil can i still use it if i try the gm module.also the wires that go to the ballast do i just disconnect them.thanks for all the help

the accel type coil you describe is the same as I am running with my GM module and it runs great

just bypass the ballast

it's really easy if you think it through

ShelbyDogg · « **Reply #27 on:** January 16, 2011 - 10:04:20 PM »

Sounds like your gap is too large between the reluctor and the pickup. Move the pickup til the points touch then back it off a little.

Author Topic: ignition module problems (Read 14835 times)

barryv

Re: ignition module problems

72rtchallenger

Re: ignition module problems

barryv

Re: ignition module problems

72rtchallenger

Re: ignition module problems

barryv

Re: ignition module problems

71Demonz

Re: ignition module problems

72rtchallenger

Re: ignition module problems

nqkjw

Re: ignition module problems

71Demonz

Re: ignition module problems

72rtchallenger

Re: ignition module problems

barryv

Re: ignition module problems

UKcuda

Re: ignition module problems

ShelbyDogg

Re: ignition module problems