It looks at the problem I had with my V6. Is it possible that the engine is flooded by too much fuel?
After 1,5 month of checking everything I got the trick here at the forum to press the gas pedal to the floor and starting the car. Maybe you can try it.

 

No the engine isnt flooded...i checked and also i replaced the spark plugs and when they were out i ran the engine a bit without the fp relay and without plugs in...if i hotwire the fp relay then the car starts straight up....if i remove my finger from an open relay it dies immediately...so for some sneaky reason my fp relay doesnt engage ....someone has said crankshaft sensor but my tahho works as i crank the engine smth like 200rpm.s soo im assuming the crankshaft sensor is healthy?

 

You can check if you have about 3,5 volt at the pump with priming the car.

 

If you have an ECU Power Supply Relay (in the ECU box), that could be the problem.

With the ignition ON, check the voltage at the black wire where it connects to the fuel pump relay coil.
If it is not 12V, the ignition switch is almost certainly faulty.

 

Does your car have a switch you may have inadvertently switched off that kills power to your fuel pump relay.....a "safety" or anti-theft device? I would retrace your vacuuming movements looking for a switch on the driver's side.
That is the most logical answer to me.

Usually when you first turn the ign. switch so that the lights turn on in the dash you should hear the fuel pump run for a few seconds. Do you hear it?
Does everything else electrically work like the power windows/lights/fresh air blower/horn? Trying to ck the ign. switch.
Did you check all of your fuses?
The ECU/ECM relay is located in the engine compartment in that box underneath the windshield usually along with other relays and fuses. You have to unbolt the top of the box to gain access and you are "supposed" to remove the wiper arms and the panel/cover above that box to gain access to the screws but I usually don't pull that panel/cover.
Fuses/Relays/Ign. Switch electrical portion and even the Convenience Control Module/wiring under the front carpeting could be the culprit.

 

Yeaaah .. Soo ive cheked so far ...

Pump is good
Relay is good
Ecm relay is good and gets power
Fuses are good
Fuses do get power
Relay gets power
But i think the fp relay ground switch wire small pin 5 aint triggered.....
Ign switch ia okay
Windows, locks , lights , lamps , instr cluster works....
Checked ecu box- completely dry and still weather proof

First i did NOT get CEL or ECM or ECP light but now they are illuminated also...
And a ton of DTC.s

Like evap
Mass air
Injectors short to ground or open
Maf
Fuel pump primary circuit (altho i guess that could be from me removeing fp relay)
TCM fault
Saip fault
O2 faulty
Aand the shit goes on....

Wondering if bad injector or shorted saip or bad oil sensor would kill the power to pump?


Heelpp!!!

 

With the ignition ON, what is the voltage at the black wire where it connects to the fuel pump relay coil ?
With the ignition ON, what is the voltage at terminal 15 on the ignition switch ?