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HELP my car won't start

This is a discussion on HELP my car won't start within the General Help forums, part of the LSx Technical Help Section category; Alright well about tWo months ago my car stops working. One day it fired up but it wouldn't stay on ...

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    Member FBracing1222's Avatar
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    HELP my car won't start

    Alright well about tWo months ago my car stops working. One day it fired up but it wouldn't stay on unless I kept my foot on the gas, then after a cuple min it ran fine. The next day same thing but I just left it and thought it was the cold. Well now two month later it won't start. I thought it was the fuel pump so I replaced that and the filter and nothing and I have spark. The fuses and relays r fine as well. The car cranks but it won't fire and now I have no idea what to do next. Maybe cam or crank sensor?? Idk but if u have any ideas pleas tell me haha cus I don't

    Thank you Jason

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    Member FBracing1222's Avatar
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    Anybody??

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    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
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    if you have spark then the crank sensor is probably ok. Have you keyed it on and cranked it long enough to fill up the fuel filter and prime the fuel system up to 55 to 60 psi?

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    Member FBracing1222's Avatar
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    Yea I did it for quite a while so I don't think that is it.

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    Member FBracing1222's Avatar
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    Anybody else go any ideas??

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    Moderator Cutlass's Avatar
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    can you hear the pump running? Maybe have a friend key on the ignition (don't crank it). the pump should run for 2 seconds.

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    Member FBracing1222's Avatar
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    Yea it is running I'm getting really frustrated tho that's for sure haha

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    O U 8 1 2 Spaz's Avatar
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    possible key fob???

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    Moderator Cutlass's Avatar
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    any trouble codes? It could be alot of things. MAF sensor, coolant temp sensor, vats theft system problem, crank sensor, blown fuse somewhere, bad pcm, fouled spark plugs, etc.
    Disconnect the MAF sensor and see if it'll start. pull a few spark plugs and see what they look like maybe?

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    Member FBracing1222's Avatar
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    Well no maf it's deleted. The fuses and relays are fine. You think it could be the crank position sensor??

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    Member Blue_01_Z28's Avatar
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    I Bet its probly the cam sensor, I would check the easy things first like making sure there is fuel and spark indeed which you say there is so I would buy the cam sensor its about 3 inches long or so and about 35 bucks at the auto parts. Good Luck

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    Member FBracing1222's Avatar
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    Cam or crank?? Cus it should still start, just run like crap with a bad cam sensor I think?? But with bad crank sensor I read that it won start. That's y I'm thinking it might be the crank sensor??

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    Member Blue_01_Z28's Avatar
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    I've heard the opposite, I actually had a bad crank sensor a month ago it stareted fine, it would rear it's ugly head at wot.

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    Member FBracing1222's Avatar
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    Alright well I replaced the crank sensor and nothing. So I have no idea I guess il go there next. Do u know where exactly the cam sensor is?? Thank you for ur help as well

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    Moderator Cutlass's Avatar
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    Quote Originally Posted by FBracing1222 View Post
    Do u know where exactly the cam sensor is?? Thank you for ur help as well
    You have to remove the intake manifold. its right next to the oil pressure sensor.

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    Member FBracing1222's Avatar
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    Thank you

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    Member Baluchitherium's Avatar
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    It has a big wing!

    Subscribing because my brothers 98' TA shows symptoms just like this from time to time... And he has also replaced fuel pump/filter and is getting spark...

    Quote Originally Posted by FBracing1222 View Post
    Well no maf it's deleted. The fuses and relays are fine. You think it could be the crank position sensor??
    BTW.. might be a dumb question but, what do you mean you deleted the MAF sensor? I thought that it plays a big role in fuel and air management?

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    Member FBracing1222's Avatar
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    I went to speed density. And this will explain it much better than I can

    MAF vs Speed Density

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    Member Baluchitherium's Avatar
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    It has a big wing!

    Quote Originally Posted by FBracing1222 View Post
    I went to speed density. And this will explain it much better than I can

    MAF vs Speed Density
    Ooooooooooooh...Gotcha!

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    BLACK
    2002 TRANS AM WS6

    car won't start

    hi, i had the exact same problem with my car yesterday. it started about a week ago my car would start intermittently. it would start fine and if i drove it for 10 minutes and turned it off it would not re-start. as the week went by it continued to get worse. well yesterday it would not start at all. it would just crank and crank and would not even try to start. i could hear my fuel pump coming on when i turned the key to the on position. so i replaced the fuel filter and still would not start. so then i switched my fuel pump relay with my air pump relay and still nothing. so then i took one of my fan relays and put it in the ignition relay and it started right up. so far its continuing to start right up. try that and you might get lucky like i did. i was dreading putting a fuel pump in. good luck.

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