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#90775 05/08/2005 8:58 PM | Joined: Mar 2004 Posts: 49 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 49 | Hey guys i need help with a problem. I tried to start my truck for the first time this weekend .I run wires from my battery to the switch then one wire from the ignition post to the HEI ignition then another one from the starter post to the starter.when i try to start it i think it blows the module (3 different distibuters out of running cars)I've done this dozens of times before with no problems.I put points distributer in using the same wiring and it runs great.Anybody know why it is blowing modules? | | |
#90776 05/08/2005 9:55 PM | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | There is a metal terminal that goes under the coil to the connector. Sometimes a guy changes dist. caps & leaves the term. in the old cap.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
#90777 05/09/2005 3:39 AM | Joined: Feb 2000 Posts: 364 Shop Shark | | Shop Shark Joined: Feb 2000 Posts: 364 | I had that trouble with a Mallory electronic ignition...burned up two modules until I found out I need to mount a resisitor between the coil and the distributor. | | |
#90778 05/09/2005 4:21 AM | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | I assume this is a pre-computer HEI. It should have a terminal labled TACH where the power and ground are connected.
That connector gives the same signal to a tachometer that a point type ignition would. If you put a test lamp between that terminal and a source of 12-volts the light will flash while the motor turns if the module is working.
This is the approach I've used to test these things in the past.
The GM HEI does not require an ignition resistor and will not perform correctly if one is in the circuit. You probably won't notice the problem unless the motor is turning faster than typical street driving.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
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#90779 05/09/2005 3:16 PM | Joined: Feb 2000 Posts: 364 Shop Shark | | Shop Shark Joined: Feb 2000 Posts: 364 | I guess I assume it's an aftermarket HEI...with a non-resistor coil. | | |
#90780 05/09/2005 5:28 PM | Joined: Mar 2004 Posts: 49 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 49 | I put another distibuter in today ,checked and rerun all the wires ,it fired up fist turn. I must have done something wrong the first time that i hooked them up (Got in too big of a rush to drive it). Thanks | | |
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