I replaced a fuel pump and the new one is acting odd. Instead of the steady whine I hear from most fuel pumps, this one will chug and surge. You can always hear it when you first push the gas pedal. It goes about a mile down the road before it seems to stop pumping gas and the vehicle slows down to about 20 miles an hour, and the pump can still be heard chugging. If I restart it and let it prime, it'll go for another mile before doing it again. I replaced the fuel filter and that didn't help. I also replaced the sending unit when I replaced the fuel pump.
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Walt, You will hear the fuel pump at times. When you take the gas cap off the fuel tank is acting somewhat as an echo chamber that is amplifying the noise of the fuel pump. Presumably the engine is ticking over when you remove the gas cap? Otherwise the fuel pump should not be running.
The fuel pump only supplies fuel on demand - obviously. The pump will run to pressurise the system to meet demand and if that demand for fuel fluctuates, the pump will run down or increase speed accordingly. This speeding up and running down of the pump is constant.
If by 'a miss' you mean that the fuel pump goes quiet for a second or so - that's normal. No demand for fuel - the pump doesn't run. That wouldn't effect the engine at tickover.
If the 'miss' is from the engine at tickover that's more than likely to be a plug.
If your car runs okay at speed and doesn't cut out and then will restart almost immediately, it sounds as though your fuel pump is okay.
When you turn the key to on before start do you hear the fuel pump whine for a few seconds? If you hear the whine it could be fuel filter or no spark. If no whine squirt gas into throttle. Then start the car if it starts the problem is in fuel delivery (bad fuel filter, fuel pump or fuel pump fuse). If it did not start then its spark related(cam or crankshaft sensor, ignition coil)
Check for spark. If no spark it can be the cam or crank shaft position sensors. Turn key to on do you hear the fuel pump whine for a second or two. If you hear the pump it could be clogged fuel filter. If you dont hear whine check fuse then check for voltage at fuel pump. If volts at fuel pump then it could be the pump.
Hi. The whining noise you hear is the fuel pump priming the fuel lines. If you don't hear the sound anymore then your fuel pump has stopped working. Check your fuses. Also look for a relay for the fuel pump. The relay will usually be in a large box under the hook that says fuse and relay panel or somethingsimilar. If the fuses and relay are working the the pump will probably need to be replaced.
Hi :) That starting system has a coil pack and if one side stops working the engine only fire on 1-3 or 2-4 which make the engine shake and not start.There should be a crank senor that could be on its way out. and check the relays in the black box buy the battery there is one for the fuel pump and pre start pump.
fuel pumps are a real common problem for these cars you can hear them run and they can still be bad because they leak the fuel pressure back into the tank instead of holding steady there is a test port under the hood on the fuel rail ontop of the intake there is a plastic cap on it and if you unscrew the cap it looks like valve steam in a tire hook up a fuel pressure tester there (you can borrow one from autozone or kragen for free) fuel pressure should be at least 50psi with the key in the on position and hold there steady if its less or if the pressure starts to drop replace the fuel pump
normally, the only part of your automatic transmission that will make a whining noise is the pump. it usually whines when iether the fluid is low or more commonly when the transmission oil filter is getting plugged up.
the power steering pump will also make a whining noise too.
turn the wheel all the way to the right and hold steady pressure against the stop. this puts maximum force on the power steering pump and, if the power steering pump is the one making the whine, it will change the sound of it. (usually louder).
if the trans pump is making the whine noise, it should sound different in neutral compared to drive. this test will really only work if it make the noise without the vehicle moving. if it wont do it at idle hold the rpms at 2000 or so.
if you decide the noise is coming from the transmission, and the transmission filter has not been replaced (assuming you installed a used transmission), replace the filter by removing the oil pan.
oh and also, if it is the power steering pump you should be able to make it make the whining noise while the vehicle is stationary. if it wont make noise unless its moving its not the power steering pump.