intermittant Dead battery problems
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5th Wheeling
Joined: Apr 2003
Posts: 49
Likes: 3
intermittant Dead battery problems
Ok I have searched for this for sometime now,
I have all the Wiring diagrams for the truck.
And for some reason it started after I had taken it in for the ign switch recall.
But the dealer says that it is not the cause.
Seems that the fuel pump(high pressure one) will cycle for no reason when the key is off.
I have changed the relay, tried tracking it down as a short.
But according to the wiring diagrams,
With the key off the pump relays are NOT supposed to have power to them.
But sometimes when I close the drivers door the high pressure pump will cycle and charge the fuel rail and the keys are in my hand.
Without warning it will drain the battery overnight,
and doesn't happen all the time just when you least expect it, or need to be somewhere.
Has anyone had this problem arise?
If so what was the fix for it.
thanks PB
I have all the Wiring diagrams for the truck.
And for some reason it started after I had taken it in for the ign switch recall.
But the dealer says that it is not the cause.
Seems that the fuel pump(high pressure one) will cycle for no reason when the key is off.
I have changed the relay, tried tracking it down as a short.
But according to the wiring diagrams,
With the key off the pump relays are NOT supposed to have power to them.
But sometimes when I close the drivers door the high pressure pump will cycle and charge the fuel rail and the keys are in my hand.
Without warning it will drain the battery overnight,
and doesn't happen all the time just when you least expect it, or need to be somewhere.
Has anyone had this problem arise?
If so what was the fix for it.
thanks PB
Senior User
Joined: Nov 2004
Posts: 447
Likes: 0
From: Florida
The ignition switch is the problem I bet, take it back to the dealer and talk with someone else and tell them it started after the change. It sounds to me like sometimes the switch is not killing all power when in the off position.
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