i did not remove the manifold just cleaned it in place as good as possible. i soaked the iac in part cleaner.
ok just making sure, because when you say things like "I just dismantled the manifold...
", and then you say "i did not remove the manifold...", we're not sure what to believe...
check the vacuum line
to the fuel pressure regulator. Lets not call this "hose", since "hose" can mean anything. This is a technical forum, so lets be as precise as possible. If it is broken/cracked/compromised in any way, the fuel pressure regulator will not function as intended.
Unless you have another IAC to check on your car, or another car to check your IAC on, there's a 50% chance you damaged the IAC. May need to replace it. No way to test it properly unless you have access to a PWM power supply. If you want to eliminate this as a possible culprit, buy a new one or a known-working used one.
Exactly how did you clean the maf? Did you unplug it? Did you remove it from the housing? Exactly what did you do. Retrace your steps. Possibly you damaged it somehow. Did you soak it in parts cleaner too???
How exactly did you clean the manifold in place? exactly what did you do? Were the spark plug wells uncovered when you did this??
Basically, it can be anything you touched
if you weren't careful. Did you gap the plugs? If so, what gap did you set the plugs to? How did you remove the plug wires from the engine?