Hello. I have a 1985 olds cutalss supreme 3.8 v6.. i believe my fuel pump is goin bad.. the other day i went to the store and came out.. tried to start it.. but it just wouldn't start. after a while it finally started while tapping on the gas tank.. i dont know if that had anythin to do with it. when i turn the key to on.. i hear a noise, like the fuel pump is working.. could it be that i have a bad fuel filter?

got watch computers could be possiable u got a bad we went through 4 computers for a cutlass supreme which is the computer as and 4 computers in a row we order was bad

Hi, My book indicates you have an external electric fuel pump.

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The fuel pump is located on the passenger side of the engine down low, you will see a line going into it and a line going out of it to the carb and 2 bolts hold it to the engine. Thank you for using Fixya!

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May just be bad fuel If it has sat for that long. your fuel can be restored with an additive you can get from any auto parts store.I would try that first to rule that out.

you will need a fuel conecter removel tool you can get from part store the filter should be under car on drivers side

If it sat for 3 years the fuel may be in pretty tough shape. If he gasoline smells like a can of old varnish or turpentine then it may have gummed up either the fuel pump, injectors or both. I would start by testing the fuel pressure with a gauge first to see if it is actually pumping enough fuel to run the engine. If the fuel smells bad or your pump isn't working you may need to have the fuel tank removed and cleaned and the fuel lines flushed to get all the old gunky fuel out of them. Also check to be sure you actually have spark at the plugs so you'll know if the ignition system is still working.

Did you try checking or replacing the coolant sensor? I think you should replace it along with the thermostat. Are there any problems like sputtering or any unusual noises or symptoms? Smoke, anything?

How much fuel pressure?

go to an auto parts store and use there code reader it should point you in the right direction.

try to keep it runing with carbuteror cleaner aply to the intake if it does your fuel pump might be bad