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Re: my 89 camaro
Most likelly you fuel pump relay stuck close try to replace it,
and also look for posible bypass circuit installed to run fuel pump all the time, if you bought the car with the problem may be some one by paaseed but if not the replace the fuel relay
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You may have to "cycle" the ignition switch a few times to get fuel up to the fuel rails. Make sure the battery is fully charged. Turn the ignition switch to the RUN position (do not start yet). Listen to see if you can hear the fuel pump running. If you can hear it, turn the key of and wait about 15 seconds and turn the key to the RUN position again. Repeat this step one more time, the turn the ignition to START.
If you cannot hear the fuel pump running when you turn the key on, then you most likely lost your fuel pump when you ran out of gas. This is pretty common - especially if the fuel pump has a lot of miles on it. If this is the case, then you will have to replace your fuel pump.
Most likely it would be the tank sender unit,but it could also be the dash gauge and or possible wiring. When u turn off the key , does the gauge go to a different position ? If so, then probably the tank sender, if not then the dash gage.
First of all you will only have voltage for 2 seconds after key is turned on from the fuel pump relay. after that when you begin to spin the engine over oil pressure then builds up and closes the contacts on the oil sending unit causing the fuel pump to stay powered up as long as it's spinning or it's crunk and running.
so while you check for power on the tan with white stripe at fuel pump , have someone bump the engine over, if you have power up until about 2 seconds after they let off the key then check ground to pump if it's ok then you'll need a fuel pump.
If you don't have voltage when it's spun over then check the red wire coming from the oil sending unit the same way you checked it at the fuel pump.
If you have voltage then check inline fuse beside the battery. if fuse is'nt blown then check for broken wire from there to fuel pump.
If you don't have voltage from red wire at oil sending unit then check for voltage on orange wire at sending unit, if you have voltage on the orange wire and not on the red wire while someone is spinning it over then replace the oil sending unit.
If you wanna do a quick check that makes sure your relay isn't the problem Go to your 12 way diagnostic connector under dash by stearing wheel. and touch a battery hot wire to pin G if relay is ok the you should hear the fuel pump come on.
i would try checking my ground cables.try looking up the codes.this can be done for free at the local autozone or someplace like them.
i would also check the alternator/voltage regulator and there grounds.