Just got done installing my new cam. I went to start the car and it fires up instantly but then it dies. What do yo uguys think is causin this problem. thanks

 

What cam is it? Try giving it gas.

 

its a tu1 cam 225/225 duration .581 lift 113+1 lobe sep.

Ya tried giving it gas, it starts up fine it just immeaditley dies after. Giving it gas doesnt make any diffenernce

 

Check the plugs, wires and fuel system first. That size cam should stay running.

 

its not running it fires up and then dies

 

Cam and crank sensors both plugged in and not pinched somewhere?

 

yeah it is plugged in

 

but it still doesnt work

 

Check the fuel pressure with a gauge.

 

And crank the engine with the coils un hooked. check oil pressure also.

 

well the ignition should be fine i mean the car fires up but just dies instantly..

 

Needs a basic tune, mine did the same thing. Well mine started, ran for a little bit then after if warmed up it idled like crap and died... wouldnt start back up. Needed a basic tune.

 

does it sound like its running good, then something kills it?

 

it sounds real good when it fires....it sounds like all cylnders fire for just a quick second and then it dies instantly...Seems like th ecar would still run without a tune its not to big of a cam..

 

I know exactly what your problem is.. I've seen this exact same thing before, and it had NOTHING to do with fuel, spark, anything. You tripped your vats.

It's your anti-theft system. I forget exactly how to reset it so you can run the car. I know if you searched on this, you'd find your answer though.

Try a spare key, check fuses, have a new key made, could also be the ECM.. but that's the area you're having trouble.

And good luck with the car hope she runs scalded

 

hmm that is interesting. i wonder why it would do that tho.

 

yes this happened sometime back with a guy in this board and his truck with a new motor in it (i think)
it didnt start....it was VATS, he had to reset it...search and you shall find

 

The security light turns off when the key is on...could it still be VATS?

 

I think not.

Check for fuel pressure at the schrader valve on the fuel rail. And can you hear the fuel pump buzzing?

 

the vats is what i was getting at. Will it start good everytime, no matter how many times u try it in a row? Repeatedly start/run shortly/stop? now that the vats light goes off, that may mean it is not it, but i would try resetting it anyway.......however, i had my car without power for over a month, and it didnt trip anything, so its weird that you should have to reset it. Try some of the other suggestions listed above also, we'll get it figured.