Hello,
Your very welcome. Clearing the codes by disconnecting the battery is a good
thing. However, you need to know that the injection system is supposedly a
somewhat adaptive system. What that means is starting it up and letting it
just idle it won't be able to adapt itself to your driving. Checking for a
jumped belt is fairly easy. You can undo the timing cover and take off just
the top half of it to look at the belt. You want to align the motor at the
crankshaft mark at TDC and then the rotor on the distributor should be
pointing toward the thermostat housing toward number one. The cam should be
aligned with a notch at the top of the valve cover or the back cover of the
timing belt. It probably wouldn't hardly run at all though if the belt is
jumped. Maybe the idle motor isn't working, or it needs some cleaning out.
It's a little cylinder motor that's under the intake. It can get clogged or
go bad and that may make your idle high. Don't forget to check the switch
on the throttle body for a click as you open the throttle. Hesitation may
be one of the things bad that you are replacing. Also I recommend checking
the vacuum hose on the pressure regulator. That's the thing on the very
front of the fuel rail. They go bad and can cause weird problems. Also if
the vacuum hose to it is cracked then the vacuum won't change in the manifold.
The change in vacuum is used to raise the fuel pressure a bit on acceleration
so it richens up for just a second or so. Wish you well.

Dave 82 242ti 278k mi.