DTC P0172 and a P0175 codes

[6.2 man]

My 2001 Chev truck with a 350 had a service engine soon light come on My scan tool said the left bank and right bank are too rich . I had read it could be a couple things but not oxygen sensors .I hooked up a gauge and the fuel pressure didn't budge . Any ideas and the difficulty tracking this down . Could my cat be bad ?

 

[bigblock72]

My 2001 Chev truck with a 350 had a service engine soon light come on My scan tool said the left bank and right bank are too rich . I had read it could be a couple things but not oxygen sensors .I hooked up a gauge and the fuel pressure didn't budge . Any ideas and the difficulty tracking this down . Could my cat be bad ?

2001 truck with a 350? only the vans had 350s in 2001 as far as I know.

Can you look at datastream with your scanner?

 

[6.2 man]

2001 truck with a 350? only the vans had 350s in 2001 as far as I know.

Can you look at datastream with your scanner?

My bad you are right it is a van

 

[bigblock72]

My bad you are right it is a van

Ok, so it is a 350. Hmmm... does it have a long crank time when hot? Is the mass air flow sensor clean and have a factory style air filter? What is the fuel presssure? Does your scanner read datastream?

 

[6.2 man]

Ok, so it is a 350. Hmmm... does it have a long crank time when hot? Is the mass air flow sensor clean and have a factory style air filter? What is the fuel presssure? Does your scanner read datastream?

It does not start hard when hot I cleaned the maf I replaced map sensor .Pressure is 62 lbs and doesn't drop after shutdown Has a new fuel pump has a

Ok, so it is a 350. Hmmm... does it have a long crank time when hot? Is the mass air flow sensor clean and have a factory style air filter? What is the fuel presssure? Does your scanner read datastream?

Maf is cleaned fuel pressure is 62 lbs replaced MAP sensor Starts great even after it is hot and factory air cleaner new filter