Quote:
Originally Posted by blackmax
can someone explain why this worked? I'm starting to get a little worried that it may have been coincidental and this may not have actually been the the fix. How would an EFI relay cause the vehicle not to crank? I'm worried about getting stranded again and finding out that this really wasn't what allowed the vehicle to crank. Although it sure is coincidentally fiddle with it for 3 hours and then 5 seconds after I removed and replaced that relay it did start.
Been able to find absolutely not one word on the internet about and EFI relay Auto 4th gen being the culprit in a no crank. ??
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If the relay is old, the contacts can come loose from age, and vibrations from the vehicle. That relay provides power to the fuel pump among other things. The fact that there is silence is most likely because the ECM probably shuts all cranking power if it doesn't receive a signal from the fuel pump at startup. Loose contacts are connected sometimes and not connected others. Hence why its an intermittent problem and not constant. Now would be a good time to go through and check all the relays in the box.
