Idle air notfunctioning Rough idle in mornings idles up then down pulsing idle 2003 Jeep laredo .

If you have to remove the PCV to get it to run, it's starving for air. Most likely a bad idle air control valve. Battery wont hold charge is a separate issue. Get your charging system tested

http://ricksfreeautorepairadvice.com/bad-idle-air-control-valve/

How long since a tune-up? Any applicable trouble codes?
The basics for a rough idle, check for a leak of some kind, fuel--egr--vaccum.
Check/clean idle air system and anything that has to do with mass air flow like, maf--map--tps, something of that nature.
Does it run ok going down the highway?

Do you mean IAC. This is the Idle Air Control Valve and would be what you need to replace.
The Idle Air Control (IAC) valve is an electric actuator controlled by the engine computer, which regulates the engine's idle speed. A faulty IAC valve will make the engine idle rough and possibly stall.

my guess, car unseen.
car has an A/T trans, and all A/T jump from park to drive
selection is made on a cold engine, due to the very fast idle speed.
what was the park and cold idle speed. and out door temps.
the lower out door temps, make idle speed , cold engine, even higher
but when the engine reaches 180F or more and holds, the RPM
is about 800 RPM (the FSM tells the exact amount and does vary for the unstated engine option) so at 800 the tranny don;t lurch, did it on a hot engine. so if idle speeds are wrong say so and say it with engine temps. or its all meaningless.
next :
runs rough, the engine (even parked?) is called misfire.
misfire on a good engine (full compression)
is:
1: bad spark (or never had a tune up ever) every 60k miles.
2: bad fueling. too rich, too lean (low idle) bad injectors (stuck or clogged, or wrong fuel pump pressure or bad Fuel pressure regulator)
3: bad fuel.

there is a test for each possible failure. all very simple test.
it takes $80 in gauge tools to find engine problems.

Was it ever tune up?

If your engine light is on, please get a free scan at your local parts chain and send us the trouble codes. Recommend you start by removing the idle air control valve and cleaning the valve and passages as well as the throttle body with carb cleaner. Check the operation of the valve by hooking up the connector and turning on the key (do not start the car) while it is off the engine to see if it actuates. Please let me know if you have questions.

1. Remove air duct and air resonator box at throttle body.
   
2. Disconnect electrical connector from IAC motor (#4 in picture).
3. Remove two mounting bolts (screws).
4. Remove IAC motor from throttle body.
   
5. clean valve, passages, and throttle body (#2)

Not caused by alternator. check the idle air control motor operation (take it off and see if it moves when the key is turned on. also clean out the air passages while you have the motor out) and clean the throttle body with carb cleaner. I have pasted some info on the EVAP purge valve--it may be operating normally. Is your engine light on? If yes, can you get a free scan at your local parts chain and send us the trouble codes?

1. The IAC motor is located on the throttle body.
   
2. Remove air duct and air resonator box at throttle body.

Evaporative Emission Purge Solenoid
Description & Operation
The duty cycle EVAP canister purge solenoid (DCP) regulates the rate of vapor flow from the EVAP canister to the intake manifold. The Powertrain Control Module (PCM) operates the solenoid.
During the cold start warm-up period and the hot start time delay, the PCM does not energize the solenoid. When de-energized, no vapors are purged. The PCM de-energizes the solenoid during open loop operation.
The engine enters closed loop operation after it reaches a specified temperature and the time delay ends. During closed loop operation, the PCM cycles (energizes and de-energizes) the solenoid 5 or 10 times per second, depending upon operating conditions. The PCM varies the vapor flow rate by changing solenoid pulse width. Pulse width is the amount of time that the solenoid is energized. The PCM adjusts solenoid pulse width based on engine operating condition.

For the pulsing temp gauge: Check Coolant Temperature Sensor located near the Thermostat.
After this is change - recheck idle.
If still rough on idle, check the Idle Sensor.

has anyone checked for a vacum leak? a vacum leak will cause rough idle at idle. check the lines from the pcv valve.

yes its the iac "idle air control" they go bad also loose batt conections cause this problem good luck