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My battery is going dead as the result of the fuel pump remaining on continuously. I current pull the fuse if I am going to be parked for than hour. I am looking for a schematic to be able to isolate the problem. The ECM controls the fuel pump through the fuel pump relay. When the key is first turned on without the engine running, the ECM will turn the fuel pump relay on for two seconds. This builds up the fuel pressure quickly. If the engine is not started within two seconds, the ECM will shut the fuel pump off and wait until the engine starts. As soon as the engine is cranked, the ECM will turn the relay on and run the fuel pump. It's possible that the ECM is defective or the relay is stuck. Un-plug the relay and see what happens. The relay is located in the engine compartment on the driver's side of the dash panel near the power brake booster assembly and has a 5-pin connector with the following wire colors: A (2) Red wires B (1) Black/White wire C (1) Dark Green/White wire D (1) Red wire E (1) Orange wire As a backup system to the fuel pump relay, the fuel pump can also be turned on by the oil pressure sender. The oil pressure sender has two circuits internally. One half of this sender is a normally-open switch that closes at about 4 psi (a normal cranking oil pressure) and remains closed while the engine is running. It should open when the engine is shut off. The other half of this sender is for the oil pressure indicator in the instrument cluster. So, if the fuel pump relay fails, the oil pressure sender will close and run the fuel pump. It is possible that the oil pressure sender is stuck in the closed position. You should disconnect it and see what happens. The oil pressure sender is located at the top rear of the engine. If the fuel pump continues to run with both the relay and the sender unit un-plugged, then the fuel pump it'self is the problem. Here are a couple of places where you can purchase an electrical shop manual: http://www.autorepairmanuals.biz/site/573683/product/ST36484ETM http://www.helminc.com
What else can I help you with?
How can you make a battery go dead on a phone?
you make a phone go dead by taking out the battery
When does a battery go dead?
Depends on the battery.
Will car battery go dead if ignition is left on?
if anything is running off the battery (visibly on) the battery will eventually go dead
Why does battery go dead?
Alternator is defective, dead cell in the battery, or something is on pulling power from the battery.
Why does a car battery go dead after a storm?
A storm has nothing to do with the battery going dead.
Will layin a battery on the dirt go dead?
No. But if left for a very long time any battery will go dead. you have to leave the battery hooked up to terminals for that the battery will contantly charge while being used in your car otherwise the battery will eventually go dead.
Why would a car go totally dead?
A completely dead battery or a bad connection to the battery.
What makes a battery go dead over night?
Dead cell in the battery or something is on pulling power from the battery overnight.
Locked 2004 odyssey that has a dead battery the key fob will not work because the battery in the car is dead. The alarm will go off and i do not know how to turn it off. what do i do?
If the battery is dead the alarm will not go off
What can cause a battery to go dead with out running on a 1989 Pontiac formula?
Dead cell in the battery or something is on pulling power from the battery.
What could be causing your 2000 Yukon battery to go dead after about 36 hours?
Dead cell in the battery or something is on drawing power from the battery.
Why does battery in karmann ghia go dead?
Dead cell in the battery requiring it be replaced or something is on pulling power from the battery. Some light or relay.
