2005 chevy cavalier, p0507 code. replaced throttle body + TPS, and IAC with delco parts. replaced throttle body + intake manifold gasket. cant find any sort of vacuum leak, idles around 1000-1100. doesn't do anything abnormal when driving

 

How many miles on it with new iac?

 

Maybe 50ish, it's a friends car that he only drives once and a while

 

I would say it needs a good drive cycle

 

So what exactly would be a good drive cycle?

 

A nice drive,20 min.? accelerate,decelerate,at idle,crank steering to bog it down,a/c on and off,a relearn,it needs to see all the perameters to settle down

 

After taking it on a few drives, it's only gotten worse. Idle when from 1000 to 1300 and it drops to 1000 from 1300 when I turn the ac on. Drops to about 1100 when cranking the wheel. Any suggestions?

 

It still hasn't learned,unless you had another issue before?some info,why the parts change?

 

Changed the iac originally for the p0507 code with no change whatsover. Wanted to replace tps and found the Delco throttle body with both sensors was the same price as the tps alone. Found the gaskets under the throttle body to be a little stiff and flat, they came with the intake manifold gaskets so I figured they're easy enough to do so why not

 

Gotya,I'd a done the same,but,now with 2nd iac,crap,the code just shows a 200rpm descrepency,not necessarily the iac,give a good search on that circuit,I'll do the same