I have a 03' with 60k miles on the clock belts and fluids are recent but for some reason my car wont hold the idle after about a minute of driving. Can anyone think what this might be related to? Im mildly modded with 380whp tuned. I have cams which lends to the rough idle in the first place. Any help would be greatly appreciated. Its dangerous driving around a car that stalls in neutral, and im a broke college student.

 

Do you have a VTA blow off valve on the car? Check the intake manifold for vacuum lines that might have popped off.

 

I had the same problem when my blowoff valve was venting to atmosphere, then I just had it recirculating till I got the HKS idle stabilizer then went back to venting to atmostphere. running a HKS SSQV blow off valve by the way.

 

I have the aps dual port bov...

 

it could be the tune or u if u have a vta bov. My 03 hates the vta bov and i went back to recir. it's been fine since.

 

might sound like a stupid question but like what someone posted above is a line unplugged, or is the hole where ur bov used to go fully covered up??? use boost leak tester...

 

What intake is on the car. Most aftermarket intake pipes & filters will cause the car to idle poorly unless the maf is scaled.