So i got to start my car today and it wont start. It turns on then dies. I have not drivin it in a week, but turned it on and let it warm up 2 days ago. I left my fog lights on so i drained the battery so i went out and bought a new one. I plug it up and the car turns on then dies. I havent even touched anything under the hood, all i did was remove my boost gauge hose to check for a leak and put it back in and thats all. WTF is wrong and What should i do?

mods are: fmic, koyo rad, alumin ast, prf and commander, dp, mp, dual n1, relocated battery to back, and a voltage regulater.

 

DO i have to resed something when i change the bat? like the ecu or what? PLZ HELP!

 

Have you checked all the fuses and relays? That would be where I would start. Under the hood fuses especially.

 

I think its the pfc, cause i searched and found some similar things but nothing really telling what to do. Iam trying to reset the pfc and see what happens. They say after a battery change it has to relearn idle, but iam wondering how iam going to teach it?!

 

This is not the case. I don't think the PFC has anything to do with your problem. I would check the fuses first.

 

So which fuses should i be looking at? Do you guys think i shorted something out while changing the batter? If i hit the gas when i turn it on the idle is all over the place, the car shakes alot its really rough. Its wierd to think all i did was change the batter and now this is happening.

 

so i take the vacume hose from my boost gauge off and the car starts. Iam going to be replacing the gay autometer gauge line with a new hose but i dont get why it was not leting my car start. After it warmend up alittle bit i put the line back in and its working fine, i think it might have just been the pfc or maybe a vac leak? i know that autometer gauge line sucks and iam going to replace it. but could this be a sign of a leak somewhere else?