Thread: 04 Pontiac grand prix starting problem

Alright so I'm working on a Pontiac grand prix that won't start. I know when it used to start you had to give it gas as soon as you start it or it would die. Thinking fuel I changed the fuel filter. No luck, so I went ahead and changed the fuel pump. That didn't change anything either. So I ran the codes, I got;
P0128, P0068 twice, P0102 twice, P0135 twice, P0443 twice, P1518. I have no idea what the codes mean besides what showed up on the scanner. Not sure if one is keeping the car from starting or how to fix them and need help.
Also I was able to start the car with starting fluid so I'm thinking it's more fuel related. Any help is greatly appreciated.

I have a ford mustang, which when I turn the ignition on I hear it buzz, loudly, but when I do the same with the Pontiac I dont really hear anything. I was gonna check the pressure regulator but someone told be that's on the return side an wouldn't effect it. Also when I pressed the bleeder valve in on the fuel rair the fuel rose about 3-4 inches. Working on getting a pressure guage to check it. Also got a picuploadfromtaptalk1405561344723.jpg

I would probably start by cleaning or replacing the MAF sensor. That might clean up the TPS code.
May need to replace the bank 1 02 sensor which is the one right behind the engine on the manifold or otherwise known as the upstream one.
The EVAP code, I would say either a leak in the hose from the EVAP to the throttle body, or canister needs replacing.
I'm fighting an EVAP code on my car right now =P

P1518. Da ef? Lol unsure about that one

P1518:The ECM has detected a loss of data or invalid data from the TAC...
Causes:
-Weak or dead battery
-loss of voltage to the TAC module
-Poor connection at the TAC module
-Failed TAC module...

Yea the battery has to be charged it won't really turn over

Check the connections. Check the wiring connecting to the battery to see if the wires are crimped anywhere or melted.
Does it lose its charge fast?

No it has a new battery and alt from a while back. I think from trying things and then turning it over it has just went down

Oh okay

Alright got the car running after changing the coolant temp sensor and refilling the coolant and resetting the codes.