Battery Drain

Asked by Jun 03, 2018 at 08:07 PM about the 2010 Dodge Ram 1500

Question type: Maintenance & Repair

I have a 2011 Dodge Ram 1500. Every day I try to
start my car my battery is dead. Convinced the
battery was bad bought a new one. Next day
battery is dead. So I run the battery drain test with
a volt meter. I have almost a ten amp draw on my
battery. I pull fuses until the draw goes away only
to find out it's the fuse that controls the fuel pump.
Some times my car is hard to start and I have to
engage the fuel pump a few times before starting. I
believe the fuel pump has lost its prime somehow
but can this cause a battery drain? Have you ever
heard of a fuel pump staying on ? What could be
causing this problem??? Please help

3 Answers

930

I'm not familiar with how long the 2011 model year fuel pump runs after shut down. It's usually only several seconds?!? The ECM has it on a timer to make sure the lines stay primed after engine shut down. If the pump relay is hanging up or is being continually commanded by the ECM. Go to your power module under the hood n look for the fuel pump relay n switch it with another of same part number or just pull the relay n do a voltage test for the relay solenoid to see if it's being commanded to stay on perpetually.

930

BTW, frustratedandhateit is a common name among the auto mechanix I know. Is that German??? ;)

On your 2011 ram pull fuse 25 jumper fuse 7 I believe(power accessory ie your power/cig lighter) jump from that to where you pulled the fuse out of 25because it only gets power key on.The cause is a built in non repairable relay in that fuse box.I used a in line fuse.But I still have a draw somewhere?But my fuel pump doesn't stay on for an hour anymore.Still have a quick disconnect terminal to temp fix it.

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