ccarley
1/2 ton status
It sure is hard to search for HEI module failure symptoms, where threads may have a fix involved. Might be cool to have a sticky with failure modes & fixes?
Previously, I had module after module fail. The OEM module (well, it was original as far as I know at least) had visible signs of burning on the underside. Replaced several modules after that, as well as the coil, and it finally came down to the pickup in the distributor that probably had fragile wires to the module. The failed pickup symptoms were odd; it would run, then run badly, and die with no codes thrown. An ohm reading on the pickup suggested it was bad, and replacement confirmed that was the issue.
Now... after running for around a year with an Accel module in my dizzy, it threw code 42 the other day. So I drove home, and while the check engine light stayed off, and it ran fine, I still changed the module with my spare new Jeg's unit. Again, it ran fine, until yesterday. Now, it's fine cold, and does some odd things which may indicate failure yet again. As it warms up, the check engine light comes on, and I loose power. Confirmed it's code 42 again. Then, as it continues to run (possibly cooling off) the light goes out, and power returns. And then the cycle seems to continue; light comes on with a sudden loss of power, and I didn't wait for it to go off again.
Now, my mounting bolts for the module look a little crusty. Does it get it's ground through those bolts? That could be part of the problem, however I'm not trusting the Jeg's module at this point. I still have the Accel module that came out, and may throw that in before I drive home today.
I did find through searching the best, most reliable module to purchase would be another GM version. So I may try to find one, however there haven't been any parts shops close by that carry them.
Previously, I had module after module fail. The OEM module (well, it was original as far as I know at least) had visible signs of burning on the underside. Replaced several modules after that, as well as the coil, and it finally came down to the pickup in the distributor that probably had fragile wires to the module. The failed pickup symptoms were odd; it would run, then run badly, and die with no codes thrown. An ohm reading on the pickup suggested it was bad, and replacement confirmed that was the issue.
Now... after running for around a year with an Accel module in my dizzy, it threw code 42 the other day. So I drove home, and while the check engine light stayed off, and it ran fine, I still changed the module with my spare new Jeg's unit. Again, it ran fine, until yesterday. Now, it's fine cold, and does some odd things which may indicate failure yet again. As it warms up, the check engine light comes on, and I loose power. Confirmed it's code 42 again. Then, as it continues to run (possibly cooling off) the light goes out, and power returns. And then the cycle seems to continue; light comes on with a sudden loss of power, and I didn't wait for it to go off again.
Now, my mounting bolts for the module look a little crusty. Does it get it's ground through those bolts? That could be part of the problem, however I'm not trusting the Jeg's module at this point. I still have the Accel module that came out, and may throw that in before I drive home today.
I did find through searching the best, most reliable module to purchase would be another GM version. So I may try to find one, however there haven't been any parts shops close by that carry them.
Nobody has the delco unit, even napa online. Looks like I'll have to go through summit ($65)
