No power to fuel pump

Had a 89 cavalier did that start then die it map sensor. Also check ground wires if the become too corroded they won't start sometimes just run weird

Replace Fuel Pump .

It is normal for the pump to run for two seconds when first switched on to pressurize the fuel system. It will turn on again when cranking and while running. I would still suspect the pump given your symptoms, however other problems could also give you the same symptoms. If it is the original pump from 2002, or more than about 7 or 8 years old, I would definitely replace it, and the fuel filter. Often the pump will go intermittent. I had one that I could restart and get down the road by hitting the bottom of the gas tank a few times!

Hi...typical of a fuel pump going bad. Might want to try getting a fuel pressure test done.

Best wishes!

theres nothing wrong with the fuel pump..did you test the mass air floww sensor or have the egr valve replaced..it will save you trouble from keeping your 2002 nissan altima from dying out.

maybe turbo , fuel pump ,or blocked fuel and air filter

85 with TBI only needs 13lbs of fuel pressure. verify that the fuel filter is clean. there is no easy way to ck fuel pressure, special adapters are needed, I dont have info here at home but there should be a relay for the pump, on the firewall and the oil pressure switch also powers the pump. did you replace the pump trying to fix this problem or did you just mention it to help troubleshoot the problem? verify that the fuel pump wiring has a good ground, should have been a eyelet that bolted to the frame..when you initially turn the key on, you should hera the fuel pump power up for 2 seconds, then go off, after the engine starts, the power for the pump goes through the oil pressure switch.

Hopefully it is only your fuel filter needing to be replace, or worse your fuel pump may need replacement. Check the fuel pressure on the fuel injector rail. You can use a tire pressure gauge, but wear eye protection, make sure the engine is off but ignition switch turned all the way toward start, and be careful you don't get sprayed.

Try cleaning the fuel pump filter. Under the seat behind the driver lift the carpet and you will find a round cover with six screws remove the cover. The fuel pump is directly below unscrew the retaining round plate and remove the pump. At the base of the pump is a small filter if it is covered in black muck that's your problem. clean and replace. job takes about 10 mins good luck. please let me know how you got on!

[email protected]

yes the fuel pump relay can cause this