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1997 pontiac gtp will turn over but won't start

G

gtp23

New member
Alright I come to you guys completely stumped I have asked a couple mechanics in town I have googled it and I gotta say I don't like or believe many of my options.

Yesterday outta the blue my gtp wouldn't start. Well it would turn over and try to start but it would spit and sputter and then die. I thought this was weird almost like an old carbeurated vehicle being flooded. But knew this couldn't happen with fuel injection as I was driving it normally so I thought it wasn't getting gas. Checked voltage on the fuel pump and everything else not that.....I ended up killing me battery trying to start it so many times.
So I had to go get another battery before I could do any further testing really. Because I tried jumping and charging my old one and it just wasn't holding a charge. After I put the new one in it started and ran like a champ no problem. Drove it around for an hour starting and stopping twice and then the 3rd time when I was about to leave town from our big shopping trip it did it again. So now my car is stuck in a town an hour away and I just pray to god it's still in one piece getting it back home later this afternoon any ideas?
 


When this happens are you checking for fuel pressure and spark? Could be a number of things, does it do it only when the car is hot...once cooled down will it start? Is your charging system working correctly, and have you had any other work done on the car recently?
 
As supercharged mentioned, have you or can you check fuel pressure? Is the check engine light on or was it on before this started happening? I am not talking about while you are trying to start it or when it dies, many light come on at that point.

By the fact it ran fine when you put a new battery in, for awhile and then did it again, I am thinking you have charging issues and it is the alternator. Can you pull the alt out and have it checked?

You also said the old battery would not hold a charge, thus you repalced it. It should have if it was in good shape, but again, thus tells me is was killed beyond its useful life and damaged.

When alternators go bad, the car runs off the battery until it kills it too...
 
Okay after days of testing and narrowing down. I have decided it to be the fuel pump. As well as the fact that my MAF sensor was broken in my throttle body.
 
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