2001 SABLE JUST REPLACED FUEL PUMP. ENGINE LIGHT IS NOW ON AND THE CAR SOUNDS LIKE IT HAS A MISFIRE OR A MISS IN THE ENGINE.ALSO THE GAS CAP LIGHT CAME IN AS WELL. I REPLACED THE CAP 6 MONTHS AGO

Could just be a loose spark plug wire. Depending on how long it's been sitting animals tend to hide under the hood may have knocked it loose. Drive it to orileys or autozone and they can scan your computer if you have a check engine light on which in my experience with a misfire it sets off the check engine light or your gas could be old also.

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.

misfire come from HT leads and injectors. Check fuel pressure is correct . check HT leads ( separation is important). Check for carbon tracks and moisture in distributor cap.

Did you reset light after service.

1. Have your timing belt checked and replaced. Sounds like it may have jumped, or is stretched.
2. If after repairing any timing issues you are still facing this problem, it may be time to have the fuel injectors tested and the fuel pump tested and replace as necessary.

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

Could very well be the main relay, limiting power to all the electronics in your car, causing the problems you've mentioned. Have it repaired or replaced.

sounds like either you have 2 of the wires crossed.........one is loose....probably #1 or your #1 plug needs regapped or is not tight and losing seal....all will cause a misfire and set the check engine light

tuen ignition key from off to "ON" 4o times to rest light. If it comes on again, go to AUtozone for free scan and get fault code

Hi, the cause of this problem might be a faulty fuel pump. As soon as the engine is under load the fuel pump can't keep up with the demand and cause a misfire

This could be a small evaporative system leak. Check the gas cap to be installed fully. If fully installed may need replaced.