The Nissan Altima is a mid-size automobile manufactured by Nissan, and is arguably a continuation of the Nissan Bluebird line, which began in 1957.

72 Questions View all

it cranks won't fire or not getting any fuel

2003 nissan atimal it cranks won't fire or not getting any fuel don't hear fuel pump when come on.

Answer this question I have this problem too

Is this a good question?

Score 1
Add a comment
Black Friday
Broken doesn't stand a chance.

1 Answer

Most Helpful Answer

mitchell1 you are not telling us what you have checked regarding the fuel situation. Now here is how it all works according to the SM:"

The ECM activates the fuel pump for several seconds after the ignition switch is turned on to improve engine startability. If the ECM receives a engine speed signal from the crankshaft position sensor (POS) and camshaft position sensor (PHASE), it knows that the engine is rotating, and causes the pump to operate. If the engine speed signal is not received when the ignition switch is ON, the engine stalls. The ECM stops pump operation and prevents battery discharging, thereby improving safety. The ECM does not directly drive the fuel pump. It controls the ON/OFF fuel pump relay, which in turn controls the fuel pump." So what the means is that you need to check your pump, the relay after that the POS and the camshaft position sensor as well as all the wiring in between. Then if still no error found you need to check the ECM.

Without sending you on a wild goose chase I recommend that you check the fuel pump fuse (see image for loaction)

Block Image

Next is the fuel pump relay

TEST ITEM

FUEL PUMP RELAY

CONDITION

Ignition switch: ON (Engine stopped)

Turn the fuel pump relay “ON” and “OFF” using CONSULT-II and listen to operating sound

JUDGEMENT

Fuel pump relay makes the operating sound.

CHECK ITEM (REMEDY

Harness and connectors

Fuel pump relay

The relay is built into IPDM E/R

Block Image

Was this answer helpful?

Score 1
Add a comment

Add your answer

mitchell1 will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 2

Past 30 Days: 3

All Time: 13