Mechanics

I RECENTLY REPLACED A FUEL PUMP ON MY .. MY GAS TANK HAS A LEAK SO I REPLACED THE TANK WITH A USED ONE FROM A JUNK YARD.

2000 Oldsmobile Bravada • 6 cylinder AWD Automatic • 127,000 miles

Now it wont start at all. Here is what I have for any ideas.

When lowering the leaky tank it slipped and fell breaking a post from my fuel pump. I decided to use the fuel pump that came with the tank to save money. TUrning the key, I can hear the pump kicking on and off but not starting the car. Now my car kicks a P0452 code. I notice my pressure sensor could use replacing. But would that cause it not to start? ALSO I noticed in the bottom of the used tank I got a little bulb looking thing rolling around, I removed it. I assume it connects to the vent on the gas tank. WOULD that be a reason for it not to start? Lastly I read on another post where someone was having my issue and a response was is your does your battery constantly die. Could the two be related? Even jumping my car for a half hour, if the cables are off it dies very fast. Any help appreciated. I assume it COULD be a bad pump but hoping not. Thanks in advance
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Jf781981
July 18, 2012.




I know what the sensor is. My question is ( I wont know fuel pressure until tomorrow) is either of the other problems a possible reason for it not to work? Would the fuel tank pressure sensor OR the pressure control valve be a reason the car wont start?

I will have more info tomorrow on the pressure

Tiny
Jf781981
Jul 19, 2012.
Shoulndt be most likely its a faulty fuel pump, just need to verify

Marv-Ellis
Jul 19, 2012.
OK WELL instead of checking the fuel pressure I decided to just buy a new pump. Still having same issue. Wont start at all. Any other ideas since now I know its not the pump. Odd thing is it worked just fine until I replaced the gas tank
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Tiny
Jf781981
Jul 27, 2012.

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