My 90 Oldsmobile will run and start putting and getting ready to die on me constantly. The person who sold me the car told me that I was going to need a fuel pump pretty soon so I'm almost 80-90% sure that's the problem. But the thing is that I don't know whether or not the fuel pump is in the gas tank or not. What should I do?
Fig. 1: The electric fuel pump has an in-tank design
Disconnect wiring from the tank.
Remove the ground wire retaining screw from under the body.
Disconnect all hoses from the tank.
Support the tank on a jack and remove the retaining strap nuts.
Lower the tank and remove it.
the position of the filter for replacement. Support the pump with one
hand and grasp the filter with the other. Rotate the filter in one
direction, then pull off of the pump. Discard the filter.
Disconnect the fuel pump connector, on wagons it will not be necessary.
On all models excluding wagons:
the sending unit on a bench upside down, then pull the fuel pump
downwards to remove from the mounting bracket. Tilt the pump outwards
and remove from the pulsator.
On wagons proceed as follows:
Disconnect the negative terminal nut and lead (black) from the pump.
Disconnect the positive lead (gray) from the pump, then loosen the coupler clamps.
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The warning lights on the dash will come on when the engine dies. If it dies and starts up like you turned the key it could be a relay or other electrical problem. May be tough to find if you can't test components while it is not starting. I assume the check engine light is not on when the engine is running.
It was my computer because the computer controls everything. Easy to install--a couple of plugs and two screws but cost $427.
You have an OBD 1 system, if you have a code reader pull the code and it should tell you. Also, have you been having to replace sensors? Or have other strange things been happening? Or has one thing happened it stops and then a different thing happening?
If YES then it is a good chance it is the computer.
as as far as the dying as soon as u put in gear and easy trick that usually helps those is to unplug the the harness that goes to the transmission cause these cars when the torque control solenoid fails it wont unlock and on ur car thats the only thing electronic is the torque convertor
have vehicle scanned, if you do not have a obd2 scanner. any auto parts store will scan for free. it may be a bad crank sensor. the car will stall at warmup and go into limp mode. it will set a code if bad. please let me know if this helps.