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El Duderino
Join Date: Feb 2011
Location: The Forgotten Coast
Posts: 5,843
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Apparently, this is contagious. I'm fighting with my own fuel pump problem on my '83 tonight.
When you jump 30 to 87a you should hear the fuel pump running. If it's not running then that's probably a bad fuel pump.
Something you can try is to disconnect the rev limiter. It is behind the fuel gauge. The east way to reach it is through the trunk. Reach in to the right and you'll feel a box with a 6-pin wire connecting from the bottom. Wiggle the connector down and unplug it. That should eliminate the rev limiter while troubleshooting.
You probably know already, but the fuel pump is a 2-stage deal. There is the initial engine crank and then the FP relay triggers the normal operation of the fuel pump.
If you disconnect the air pressure plate sensor on the back of the FD, it will allow the fuel pump to run when the key is turned to the last position before starting. You should hear it running before you turn the key to start the car.
Also check the FP ground.
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There are those who call me... Tim
'83 911 SC 3.0 coupe (NA)
You can't buy happiness, but you can buy car parts which is kind of the same thing.
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