89blackGTA

I start the car and it "starts" like normal, but then when it usually kicks up to about 1k rpms for a sec, it doesnt. It sputters and dies unless I give it some gas to raise the rpms. It started this about a week ago out of the blue. It only starts the correct way about 10% of the time.
If I dont play with the gas(only a little bit, too much and it dies) it will startup fine on the third or fourth try(usually).

And the other day I was driving to my buddies and was on the gas a bit(shifting at like 2900) and it acted like a new truck when they hit 100mph, gas just stoped for half a sec.
5.7 auto
New cap, rotor, plugs, wires, computer(not chip).
Any suggestions?

Brian

Anthology83

your check engine light doesn't come on at all?

89blackGTA

Nope not at all, other than when you have the key in and starting it like normal.

Brian

MelloYello

Check your fuel pump and check for vaccum leaks on the intake. Check your IAC - maybe its a combo problem (IAC and distributor brain?)

Anthology83

if the check engine light doesn't come on at alllll....like ...go down the freeway for about 30 minutes....and if it still doesn't come on....it is NOT the iac....i'll put money on it.....i'll be leaning more toward a vacuum leak....do you know how to check for it?

89blackGTA

No it doesnt come on after a 30 min drive, and no I dont know how to check the vac leak. I would appreciate it if you could tell me how.
Thanks
Brian

89blackGTA

..

Anthology83

the engine has to be about has cold as you can get it

then use something like....soapy water(easier to see bubbles with some soap) or any liquid really that you feel comforatable using
spray it on all your vacuum lines....and start the engine ....and look for air bubbles on the lines....if you want to be really really really **** about it...like if you love your car....do it just a couple of lines at a time so you can really exam them

keep me posted...i'm always willing to throw in my word