will removing my air polution from my 82 hurt cars performance. also thinking of changing the exhaust manifolds
and going with under car chambered exhaust
                     mark 82

why?

What are you looking to gain for power out of a crossfire engine?

Sarge

Sarge
    The engine has been redone it is 30 over balanced and
blueprinted.but they left the old crossfire intake on
car will not idle one day next day idles like a new one.
Anything over idle the car runs great have spent over 1,000
dollars just trying to get to idle. hopeing by removing air polution and some more vaccum may help the idle . the exhaust manifolds will be needed after removing air
polution the chambered exhaust is just extra .
                     
mark 82

Here's a few questions we need answers to.

What is the mileage of the car? Is the cam stock? Were the throttle bodies rebuilt? Was the EGR valve, O2 sensor, etc. replaced? Any trouble codes shown on a diagnostic scanner? Did you replace all the vacuum lines? What is your fuel pressure at?

I personally don't think that by removing some of the pollution devices is your answer to your problems.

Sarge

Sarge8138634.5230671296

Sarge
the cam is not stock but have no specs on it engine was built by a guy that builds engines for myrtle beach speedway. and that was five years ago car was garaged
after engine was done .when i got car the engine had 50 miles onit now it has 900 on it.egr valve is new,o2 sensor is new, fuel pump is new, throttle bodies were bought out of
michigan and rebuilt ,also have no codes have not replaced vacuum lines .
ps. cam is mild
              mark 82

oh boy....this is going to be a fun one.

No way to get ahold of the guy to see what specs he used????

Did this problem just happen recently? Or has it been since you got the car?

Just for the heck of it. Take some carb cleaner (spray can) w/ the straw attached (engine running) and just spray in short bursts around all the vacuum lines and where the intake meets the cyl. heads and see if you get any change in your idle. Let us know if the idle changes.

BTW, If I don't answer any of your posts or threads on this matter for a few days, I not ignoring you. I will be busy tomorrow after work getting the vette ready for the trip to C3X. I will be back online Monday night.

Sarge

Sarge
we have put all new intake gaskets on also have done the
carb spray. the guy that built the engine moved a couple of years ago to charlotte sc .this has been a on going problem
it's getting better but drives me nuts. sunday started car to move it to wash before are club meeting idled like a new car went to meeting got in car would not idle at all intill
car got warm. will double check vacuum lines this week if all else fails i just might go to carb .
       
mark82

You may want to check the IAC unit.  Idle Air Control motor.  That very well could be causing your problem.  They tend to act like that.  Removing more items is not the cure.

Just a thought here.......have you replaced & reset the IAC(Idle Air Control) motor? This will cause all kinds of idle problems, from stalling out completely, to idling at 3000rpm. If it's gummy/carboned up, or has never been set correctly, it won't "know" how to keep a set idle speed. (A malfuncioning TPS(Throttle Position Sensor) will do it, also) It can be out of whack and not set any codes. That's where I would look first.
my2c

Try removing the two vac. hoses that control the headlights, heater control and cruise control. It's right behind the drivers side throttle body. It's on the intake, plug the fitting, start it up, drive it some, if that helps, then happy hunting for a leak!

Denny