No spark after HEI conversion

[89ezgo6473]

I've got a 1989 Ezgo. Did the HEI conversion and the cart ran great for about 2 weeks then just stopped. Not getting any spark. Any suggestions?

[TDIguy2]

You may have burned out the coil or module. You can test the coil with an ohmmeter, but it is not easy to test the module. If the coil is good, try a new module. Before you drive too far, lift the rear wheels and check the system voltage when running at governor speed. I did this and discovered my starter generator was putting out 18V and huge amperage, boiling the battery. The starter generator tested out bad.

[89ezgo6473]

Tested coil, sure enough 0.00. Ordered new one, will test voltage when installed. Thanks for your help.

[89ezgo6473]

Wasn't the coil, don't know how I got 0 on ohms. Ordered module and will put on today.

[Shepard]

Originally Posted by 89ezgo6473

I've got a 1989 Ezgo. Did the HEI conversion and the cart ran great for about 2 weeks then just stopped. Not getting any spark. Any suggestions?

This is just a thought for when it runs and your out driving. Do not for any reason leave the key on with the engine not running. Do not leave the key on if your work on it unless you unplug the power to the ignition system. They operate at a lower temp when there working and they burn out if there not working and the power is on. This site has a lot of useful information on ignition system.


http://gardentractorpullingtips.com/ignition.htm

[cart around]

Originally Posted by Shepard

This is just a thought for when it runs and your out driving. Do not for any reason leave the key on with the engine not running. Do not leave the key on if your work on it unless you unplug the power to the ignition system. They operate at a lower temp when there working and they burn out if there not working and the power is on. This site has a lot of useful information on ignition system.


http://gardentractorpullingtips.com/ignition.htm

Looking at the 3 pg wiring diagram, in no way shape or form does that advice apply. Both the coil, and the ignition module get their power from the D side of the solenoid. There is no power there until the key switch, the pedal switch, and the neutral safety switch all make contact. At that point the solenoid activates, and the starter is turning. That means the ignition system is not powered until the cart is running.


My key switch hasn't been turned off in 5 years. http://www.buggiesgonewild.com/attac...n-retrofit.jpg

[Shepard]

Originally Posted by 89ezgo6473

I've got a 1989 Ezgo. Did the HEI conversion and the cart ran great for about 2 weeks then just stopped. Not getting any spark. Any suggestions?

Sorry my suggestion didn't fit your requirements. If there's no obvious problems like wires falling off, then one of your components is not working and may have burned out. I'm sure you knew all about not overheating the module when you went with this conversion.

[89ezgo6473]

How do I test for this?

[cart around]

It ran for two weeks, and stopped.

It either lost a connection, or burned up the module. I don't know of any way to test the module.

[Shepard]

Originally Posted by cart around

It ran for two weeks, and stopped.

It either lost a connection, or burned up the module. I don't know of any way to test the module.

There is no way to test the module. You test the the trigger coil under the flywheel -- you test the ignition coil -- you check your connections - if all is good all the way around then its the module. You mounted the module with heat sink grease smeared on the back and on the heat sink itself -- which shouldn't be mounted on the engine block because of the heat.