02 GT NEW PUMP LOW PRESSURE?

[khalistang1]

HELLOW FELLOW STANGERS KAHLISTANG HERE AND I HAVE A 02 GT I WASNT HEAERING FP KICK ON SO GOT NEW 1 NEW PUMP COMES ON BUT NO PSI ON RAIL I DISCONNECTED FUEL LINE FROM RAIL TURNED KEY TO PRIME SMALL STREAM COMES OUT ANY HELP WOULD BE GREAT

 

[COramprat]

I take it you have a no start? Check the Fuel pump relay and the shut off switch in the trunk.

 

[khalistang1]

yep No StArt also new fuel pump ive checked both i also have discovered no injector pulse but i have 12v to injectors inertia switch and fpdm and spark from coils?

 

[COramprat]

Check the CCRM. It's in the left side fender well if I remember correctly. The fuel pump relay is there. It's enclosed along with some other relays.

 

[wmburns]

If this were my car I would use an ODB2 scanner to look at the fuel pressure PID. What we are looking for is to see IF the PCM is seeing a value from the FRPS. Monitor the FRPS. Watch the FRPS as the key is cycled. Does it change? Does it change during cranking?

Also monitor the RPM's signal during cranking. Does it change?

Here is some information on an affordable but powerful ODB2 scanner.

ForScan ODB2 scanner w ELM327 USB​

ForScan ODB2 scanner w ELM327 USB

While working on your car have you ever wanted: to find an ODB2 operational PID value (say fuel pressure or MAF)? How about graph a PID value over time? Or compare multiple PID's over time? Access a bi-directional PCM control such as test a...

www.stangnet.com

A couple of notes. It does take several key cycles for the fuel pump to build full pressure. The process needs to get all of the air out of the system.

Note, a bad FRPS is a "no start" sensor.