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Question: "I installed a new 7.3L Chip. Why won't my truck start?"
The first thing I would check in a no start situation is to make sure the chip is programmed. Look at the card that came in the bag with your chip. Is it filled out? If so then the chip has been programmed. If it is blank, the chip may be blank as well.
If your truck won't start after installing the chip, the most common cause is dirty or unclean PCM contacts. Make sure the edge of the connector on the PCM is scraped clean down to bare metal and the chip is firmly seated. The terminals need to be a shiny copper color to be clean. IF they are silver then they are not clean enough.
If the chip is programmed and your terminals are cleaned down to correct color, you may need to call us to make sure it is programmed to the correct code. When you call have the code on your computer and the default code wrote on the card that came with the chip handy. We will ask for both of these codes.
👉 QUICK TIP: If your truck starts fine without the chip, but won't with it in it, the PCM contacts almost always need more cleaning.
Other Factors:
- Improper Chip Seating
- Chip Interference or Add-Ons
- Dirty or Loose Ground/Battery Issue
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