My car is not sounding or feeling to good ideling, i tryed seafoam threw the pcv hose to the intake, didnt really help, and when Im driving my car jerks alot only when I give it throttle, what do yall think I should do?? - Trey

 

check you spark plugs...running that seafoam stuff can foul up ur plugs...also..check you IAC and ur MAF

 

will a bad IAC make your car run bad? because I checked my plugs and they are good, and how do I know if I need a new IAC or MAF?

 

Just spray some electrical cleaner on the maf and some carb cleaner on the IAC, clean them off really good. And becareful of the wire element in the mass, touchy. IF that doesn't work, have to figure out what it could be.
Can you check your fuel pressure and tell us what it says?

 

I will try to clean the mass , and IAC, but how do i check my fuel pressure?

 

You just need a fuel guage that screws onto the shrader valve, on the driver side fuel rail at the front of the car. screw it on there. see what the psi is and rev it some