The truck shut off while I was driving has not started since, code p1351?

1998 CHEVROLET S-10

99,808 MILES • 4.3L • V6 • 2WD • AUTOMATIC

HUNTER98S10

MEMBER
3 POSTS

I used my scanner only code that popped up was p1351 which is shows to be ignition control module. I installed a new one and nothing happened. I pulled my distributor cap off and it was a little dirty, so I cleaned it up with a wire brush. The rotor looked good. Did some research saw someone with an identical motor had the same problem and they replaced the crankshaft position sensor and it worked. So, i replaced my crankshaft position sensor and it caused something to spark but I cannot find out where the spark is coming from.

May 16, 2023 at 6:13 AM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

the P1351 code, which points to the ignition control module (ICM),

May 16, 2023 at 12:33 PM

HUNTER98S10

MEMBER
3 POSTS

The truck's timing seems to be right. The distributor, distributor cap, coil, sparkplug wires, and sparkplugs were all replaced at 96,000 miles along with the fuel filter The truck ran amazing after I replaced those, the tips of the spark plugs were wet with fuel and the injectors are spraying. I'm not sure how to test the crankshaft position sensor. And I'm not sure how to test the wiring harness that goes to the ICM because every video I watch shows different things.

May 16, 2023 at 1:35 PM

HUNTER98S10

MEMBER
3 POSTS

Also the fuel pump seems to be fine.

May 16, 2023 at 1:36 PM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

Okay, let's see if the ignition system is getting power. here is a guide to help you test the connections and see how the system works:

https://www.2carpros.com/articles/how-to-check-wiring

Check for power on the pink wire to the coil and at the fuses, also check the PCM ground because the PCM might be bad. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
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May 17, 2023 at 8:55 AM

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