Ignition control Module problems.

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Old Jun 5, 2019 | 09:38 AM
  #1  
dannyboysarnia's Avatar
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Default Ignition control Module problems.

I own a 1978 Camaro Z28 with the original 350 V8. I bought it in 2016 and since then have replaced the ignition control module 3 times. Each time they fail after about 1 year but the last one lasted only 2 months. My mechanic can only get the cheap Chinese ones and suggested I try and find a NOS GM one, which I have. I just installed the GM one the other day and will see how long it lasts. Is anyone else having problems with the ignition control module always failing?
 
Old Jun 5, 2019 | 06:30 PM
  #2  
OldMech's Avatar
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Is your alt overcharging or do you have a voltage DROP at the dist where it plugs in? I have also seen a guy slap a non resister spark plug wires on his car to get him by... and he SMOKED the module in his HEI...



Nope, not saying the guys name.......
 
Old Jun 5, 2019 | 11:03 PM
  #3  
Y2Keglide's Avatar
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Something ain't right,the HEI in my '78 GMC is still going strong and I've had the truck 20 years.I replaced the cap,rotor and wires once but never the module.
 
Old May 10, 2023 | 11:59 PM
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Default 78 305 Camaro lt

Hi I’m looking for answers to my ignition that seems seized because it won’t let me turn the key it makes a security buzz when I try to. I bypassed the ignition coil and it turned over so I’m thinking it’s something failing in the column. I replaced the ignition coil for the key and still the same problem. Any answers ?
 
Old May 11, 2023 | 08:31 AM
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The key cylinder and ignition switch in a 78 is very simple mechanical set up. The cylinder has a gear on the end, when you turn the key there are 3 things that happen.

1.) There is a rack like shaft the runs to the bottom of the column. That shaft pushes on the ignition switch. If you lower the column you can reach in and push the switch with a long screw driver to see if the switch moves. Sometimes that switch will fall apart internally and lock up.

2.) There is a metal rod that locks into the steering wheel to keep it from turning. If there is binding this too can stop the key from turning. In many cases there was a stress put on the pin by the front wheels trying to turn while the key was off it can cause this issue. This system was designed to stop a human from turning the wheel not stopping a 3000lb moving car from turning.

3.) Wrong key or damaged ignition cylinder.


 
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