Hi All,
My 1985 740 turbo wagon quit while going down the road. It lost power and sputtered, when I tried to start it sputtered a few times and when I press the gas pedal the engine would not rev up. Now the engine only cranks. I took off the hose the red arrow is pointing to and tried to start the car, no gas came out.

Does this indicate the A. fuel pump/s are bad and or B. the fuel pump relay is bad? or C. is there something I missed.

Does the 740 wagon have the hatch to access the fuel pump?

Prior to this problem I noticed the gas gauge would jump around while driving, I don't know if this is an indication of the problem.

Thank you for your assistance,
Arden

 

Do you have spark? - If the fuel injection computer does not receive a signal from the ignition computer the fuel pump will not run. This is overridden during the start sequence. Try turning the ignition switch to the off position and then turn the key to the run position and listen for the fuel pump.

 

GB,
Yes there is spark. When I turn the key to on there is no sound from the fuel pump, after I try cranking i hear the fuel pump buzz for a second.

 

After removing the hatch cover I listened to the pump, no sound from inside the tank, the only sound was coming from under the driver seat.

I replaced the in-tank pump, all is well.

Thanks to all for the support!