help car is stalling

[patsfan5416]

i just installed a stereo system and now my car is idleing rough and stalling i have un hooked the system and checked remote ground when i get jumped it ran better but it still starts with my battery please help

 

[BrooklynBay]

Do you have any codes? Do you see a check engine light?

 

[patsfan5416]

it was on it now idles at a low 600 rpm at idle but drives fine

 

[mattbreaksthings]

battery could be going out.. alt. drawing too much current to keep up with trying to charge a bad battery and you add the stereo. that could pull down the rpms at idle and cause it to stall from idle or stopping. on the flip side.. the altornator could be going out.
also if you have a clogged IAC valve or something.. maybe your MAF is going out.
check those codes!
check idle voltage on the battery and the voltage with a little revs. should be between 13.7 and 14.5
and try it without the car on.. shouldnt be below 12.5

 

[patsfan5416]

battery is fine i think its a vacuum line i can hear a hiss but cant find the loose one is their any diagrams with all them on it

 

[mattbreaksthings]

what year/engine

 

[patsfan5416]

2004 4.0l sohc

 

[patsfan5416]

it runs better after it was sitting

 

[patsfan5416]

ran codes it came up with p0506