Ignition control module

[redsupersport]

My 96 truck with a 305 keeps getting code p1351. I have replaced the ICM with a ac delco part and it died in 2 days. I replaced it with another ac delco part and that one lasted 10 days. So today I replaced it with a duralast ICM. I hope this one lasts, has anyone had this problem ? Is this bad parts of is my truck killing Ignition control modules ? Could this be a PCM or wire problem ?

 

[Caman96]

I certainly wouldn’t overlook the China parts syndrome.
Here’s one to consider:

DUI 000666: Dyna-Module Distributor Control Module for 1994-1996 GM 4.3L V6 & 5.0L-5.7L V8 Vortec Engines - JEGS

Get the Best Performance with DUI Dyna-Module Distributor Control Module for 1994-1996 GM 4.3L V6 & 5.0L-5.7L V8 Vortec Engines 000666 parts at JEGS. Shop Now at the Guaranteed Lowest Price!

www.jegs.com

 

[PlayingWithTBI]

Is this bad parts of is my truck killing Ignition control modules ?

I would get a new ignition coil too, a bad one can take out the ICM too. You can test the coil to find out if it is bad but, it can't tell you it's good.

 

[Caman96]

I would get a new ignition coil too, a bad one can take out the ICM too. You can test the coil to find out if it is bad but, it can't tell you it's good.

I did this test on a coil. According to this test, it was good. But, IDK if this actually is valid.

xc_hide_links_from_guests_guests_error_hide_media

 

[FullBlowncustoms]

My 96 truck with a 305 keeps getting code p1351. I have replaced the ICM with a ac delco part and it died in 2 days. I replaced it with another ac delco part and that one lasted 10 days. So today I replaced it with a duralast ICM. I hope this one lasts, has anyone had this problem ? Is this bad parts of is my truck killing Ignition control modules ? Could this be a PCM or wire problem ?

you didn't use the little 99 cent Ketchup squeeze packet they gave you did ya? on the duralast under the ICM. Is the coil stock? or 50K ?

 

[PlayingWithTBI]

I did this test on a coil. According to this test, it was good. But, IDK if this actually is valid.

Not really, if the coil's windings have an internal fault, or bad insulation, a DVM won't tell you. You have to hit it with a MegOhmMeter so you're looking at high voltage and amperage to find weak windings. We used one to "Megger" all of our motors above 20HP. With a history of the resistance we can see when one is going out so, we can replace it during downtime hours, without losing production.

Megohmmeter - Wikipedia

en.wikipedia.org

 

[FullBlowncustoms]

Also are you using the old screws to mount ICM? the screws are the ground. Show a pic how you mounted the new ones each time. Is the orig rusty under dizzy cap at coil?

 

[FullBlowncustoms]

Might seem hard to believe, But I found that a KNOWN Good OEM one from a junk yard is better than over the counter at like Autozone, Advance, etc... But a nice High Performance RPM one $$ at like Jegs, Summit,

Davis Unified Ignition​

etc.. Is worth the price once you find the problem..

 

[FullBlowncustoms]

Not likely PCM is the cause My opinion. But yes a short at terminals, ground etc can cause it. IDK a 96, but any wires to coil etc touching under air cleaner? 95 coil is mounted under the cleaner is all for a thought. Start it at night COMPLETE darkness look for sparks, crossfire etc while reving it up a bit? With air cleaner removed to see better.

 

[redsupersport]

No I use the ac delco grease, and I replaced the coil with a AC Delco part a month ago

you didn't use the little 99 cent Ketchup squeeze packet they gave you did ya? on the duralast under the ICM. Is the coil stock? or 50