No spark on passenger side of engine. still starts but no fire to four plugs on right side of engine.
Jun 16, 2019 at 11:14 AM
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STRAILER
✓ASE Certified Mechanic
54,832 POSTS
Hello,
There are many fuses and grounds (see diagrams below) that need to be checked before we can call the PCM being bad. Here is a guide to help check for power at the fuses and to check the PCM grounds using the engine wiring diagrams below:
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