Discuss The signs for a bad fuel pump and filter on AllFordMustangs.com, the place for Mustang enthusiasts.
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your car won't start.
to check if you have a bad fuel pump when you turn the key to the on position and just before you start it you can hear a slight humming sound thats your fuel pump kicking in, if you can't hear it get someone to help you and if you still can't hear it, you can hit your gas tank with a rubber mallot and sometimes that'll start your car. if that starts your car you have a bad fuel pump. If not it could still possibly be a bad fuel pump.
Thats exactally what it does, it stumbles like crazy. i called and asked the guy, he said he never changed it for as long as he had it, 70xxx miles on it. do you think it would make a diff? if so where is the filter located
It is a can shaped filter behind the gas tank. Lie down under the back of the car(may need a jack and jackstands to get the rear lifted up) On the right rear, look where the plastic gas tank cover is. Up above and behind that, the fuel filter has a line going in and out. It has a strap with one bolt holding it to the underside of the car. You will need a 5/16" fuel line disconnect tool (I got mine from advance auto, made by performance tool, red in color) and a flat screwdriver. The new filter should come with little plastic clips.
Do this job when your tank is almost empty. I usually let the car sit overnight to relieve some of the fuel line pressure. There's other ways to relieve the pressure, but I'm lazy LoL. Have a rag handy when changing the filter because you are going to get some gas running down your arm when you get the lines loose. Also, refrain from smoking while you are attempting this. Get the old clips out first. Make a mental note of how the filter is mounted. Then use the disconn. tool to get the fuel lines loose. Then remove the bolt holding the filter in its clamp. Slide the old filter out, put the new one in its place(there's an arrow showing direction of flow) Make sure when pushing the lines back on that they are ALL the way up on there, then pop the clips back on. When you are done, cycle the key on and off a few times to build up fuel pressure again.
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