Fuel Pressure at idle?

[Kallbmrt27c]

Hey guys,
What should the fuel pressure at idle be?
I'm still trying to figure out why I'm getting the p0093 and p0008a codes

 

[jcain]

I sit around 4300

 

[Kallbmrt27c]

Ok thanks. I just took the lpfp filter off, everything looked good, put it back, cycle'd the key 10 times til the pump went off, fired it back up. It's sitting right around 4200-4400. I'm gonna take it for a drive now and see what happens

 

[Kallbmrt27c]

Went for a drive and codes came back, started back up and it's only sitting at 3700-3800

 

[jcain]

You might have an lpfp takin a dump. Is it whining?

 

[Kallbmrt27c]

I did notice it has been louder than normal. Is there a definite way to know?

 

[jcain]

Put a fuel.pressure gauge after the pump.