Jpedro69

I have a 2005 coupe that wont start the fuel pump doesn't sound like it is running have replaced to pump the crossover tube the lines the harness going to the pump still no fuel pressure and cant hear the pump coming on now had water in the passenger floor board from it sitting outside at the dealership from heavy rain it has been down for over a month key fob is good doors and everything else are working as they should relay to the pump has been changed and working properly new battery and cables I am at a loss the water was recent but the car ran for 3 days perfectly but went to leave after day 3 and the same problem arose can somebody please help I am at a loss.

cclive

Wow, tough to read with no punctuation...probably better to make it easy to read for someone trying to help.
You won't necessarily hear the pump as it won't make noise if there is fuel pressure. Have you attached a fuel pressure gauge to the rail on the engine? This would be my first test. You can leave it there and watch it whenever the car acts strange. I would also check voltage back at the pump. This kind of thing really requires the Service Manual for its' wiring diagrams.

Jpedro69

It is getting good voltage but it is not getting fuel pressure at the fuel rail

EVRose

Is there gas in it?

0Anthony @ LGMotorsports

If the car 'turns on' but won't start and you don't have any fuel pressure, it would almost seem as simple as a fuse being blown, or the car is in a security lock down. The anti-theft system should not let the pump come on.

Jpedro69

Well the mechanic has gone thru the security protocol and nothing and there is 3/4 tank of gas in it.

Banditz

you Said getting good voltage, what is? the pump? or the harness? You need to have teh correct voltage at the pump harness. If nothing else, try jumping the pump off with 12 volts while someone cranks the car and see what happens. that will at least tell you there is Nothing wrong with the pump itself. Just the voltage going to the pump. That right there will drastically lower the amount of issues you could have..

Jpedro69

I am not sure but I think he has tried that and we just replaced the harness

1Hotrodz

I'm not sure if you replaced the fuel pump. If you didn't you should, the motor is probably on it's way out. One thing you can try , try banging the gas tank a few times with your hand This might jar the brushes on the motor. Bang the tank while the pump is priming the fuel rail (this is during the first three seconds of cranking the engine only) Good luck!