Aynone having HEI failure?
Thread Starter
Melting Slicks
Joined: Mar 2003
Posts: 2,512
Likes: 49
From: Franklin IN
Aynone having HEI failure?
I have had two H.E.I. modules fail. Did I have a bad luck of the draw or is there a cause for this? Happened about 12 months appart with just 1,000 miles.
Thanks!
Thanks!
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
Yes, a fair amount of not just grease, but the heat sink compound needed for thermal conduction from the power of the chip controller to the metal of the dist base....
but one thing I did catch pants down after several repeated 'failures' of the chips....that is, an open coil, the first one is to solder the red-wh-yellow leads on the spark coil...that thing with crimp connections CAN GET intermittalnt, and you disturbe it, and so it opens on the crimp terminals...
you have NO energy through the coil to the tach output terminal...no 12 volts...of course no engine running either....
of course there is another coil involved, under the rotor, and the green/white leads into the module in question...this is the sense coil, and if it decides to open up or be intermittant, of course you got nothing, once again....
ME, IF the SS sender unit seems to be bad...I solder the ignition coil primary terminals, change the sensor coil, and the module at the same time....case closed....
GENE
but one thing I did catch pants down after several repeated 'failures' of the chips....that is, an open coil, the first one is to solder the red-wh-yellow leads on the spark coil...that thing with crimp connections CAN GET intermittalnt, and you disturbe it, and so it opens on the crimp terminals...
you have NO energy through the coil to the tach output terminal...no 12 volts...of course no engine running either....
of course there is another coil involved, under the rotor, and the green/white leads into the module in question...this is the sense coil, and if it decides to open up or be intermittant, of course you got nothing, once again....
ME, IF the SS sender unit seems to be bad...I solder the ignition coil primary terminals, change the sensor coil, and the module at the same time....case closed....
GENE
