Join Date: Aug 2007
Location: Pearland TX
Feedback Score: 0 reviews
So how much voltage does the fuel pump get?
I've been having engine issues. Included in that is my fuel pumps not working. I'd been messing around with vegetable oil stuff, but as part of the troubleshooting and to just make her run right, I've returned her to stock layout.
The problem I'm having is that the fuel pump is only getting 6.5 V. I have the batteries on a trickle charger now, but they tested fine, and the fuel pumps (both that were in the vehicle, and my spare) run perfectly when shorted directly to the battery.
As I remember, the PCM delivers power to the fuel pump based on various factors. But it should always be 12 V if it's anything. My inclination is to think this means I have a PCM problem and need to try replacing it. But I wanted to ask here as a sanity checl Any opinions?
2002 F-250 black super cab 7.3 L PSD auto trans. 4X4 Lariat with a little lift and mud tires.
Veggie oil system removed while I rebuild and redesign it.