IAC?? How to tell when bad?

[98blackstallion]

Ok before my IAC valve had a VERY strong suckion to it but today I checked it and it hardly has it suckion at all. So is it bad? I know this is a stupid question but Im curious! Oh yeah car wont idle either.

 

[RandyStinchcomb]

do you have more than 75k on the car? how often has the PCV valve been changed?
chances are you'll need a new one

 

[98blackstallion]

the IAC has around 123,000 miles on it but Ive kept up with the PCV valve but i think my IAC has kicked the bucket.

 

[BennyBlown2v]

Are you getting a check engine light? If so, what code?

 

[98blackstallion]

nope no check engine lights

 

[kylebgt]

Are your rpms stumbling? especially when cruising to a stop? if so you will need a new IAC for sure. Cleaning it will just make the problem worse, just pick up a new one.

 

[kylebgt]

Seafoam wouldn't be a bad idea either.

 

[BLKsteeda]

What issues would a bad PCV valve cause? I'm at 66k miles and still on my stock one

 

[RandyStinchcomb]

What issues would a bad PCV valve cause? I'm at 66k miles and still on my stock one

uncontrolled blow-by which gunks-up the intake manifold, IAC, and other related parts.
the PCV valve should be changed at 30k under Normal intervials

 

[BLKsteeda]

uncontrolled blow-by which gunks-up the intake manifold, IAC, and other related parts.
the PCV valve should be changed at 30k under Normal intervials

well I'm about 30k miles over...does it cause idle issues, stalling?