Chrysler Repair: 99 cirrus: trans slips, multiple codes, intake air temp, chrysler cirrus

Question
QUESTION: "Hi Kevin, my son just bought a 99 chrysler cirrus 6 cyl, last night he was having
trouble reversing up a hill. No problem reversing on flat area. The CE light came on,
pulled codes p0736,
p0733, p0732, p0734, p1782, p1781, p0700. Also codes p0300 and p0171. I know what the
codes stand for but not sure what the real problem is. I am hoping it is just a sensor,
pulling alot of codes for one thing. Please HELP! This is his first car and i hate to see
him sit after 1 day of having it. The guy that had it said he ran over a deer."

ANSWER: Hi Kimberly,
All the 732-6 codes say the trans is slipping in the various gears. The 1781 and 82 speak of an issue with 2 of the internal pressure switch sense circuits that are involved in operating the clutches which if not functioning properly could be causing the slippage. Because of the cost associated with removing and rebuilding the transmission my advice would be to begin by trying to remedy the pressure switch circuit problems which means verifying the wires to them are ok and then if so by installing a new/rebuilt solenoid/pressure switch 'pack'. The wires might be the issue simply as the result of the collistion with the deer, so don't overlook that wiring harness between the transmission and the transmission controller.  That pack is on the outside of the transmission so it can be easily replaced with modest labor costs. The pack itself might be in the range of $200 but that is my guess. The best place to have this checked out would be an independent (not a dealer or nationwide franchise sort of place) transmission shop that has experiemce with the Chrysler transmission. See if they agree with that strategy. Also, of course, have the level of the trans fluid as shown on its dipstick checked. Only ATF+4 type fluid should be used if needed and don't overfill it.
The 0171 code says the engine is running too lean which could be due to an inaccurate coolant temp sensor or intake air temp sensor. Those are minor cost items and can be diagnosed by means of a simple volt-ohm meter. The 0300 speaks of the engine 'missing' which could be due to the lean mixture problem (or so many other possibilities that the sensor issue should be addressed first).
So that is how I would start getting a handle on this.
Roland

---------- FOLLOW-UP ----------

QUESTION: Thanks Roland. I will try your suggestion. I checked the fluid of the transmission and it seemed a bit high, i siphoned some out, then it started raining, so i will try again tomorrow. I am told that if the fluid was too high then the transmission is already ruined but I have hope and i will see about the solenoid pack. Thanks for responding so quickly.

Answer
Hi Kimberly,
It is good to get the fluid at the correct level. I would not think overfill would damage the trans unless extreme and for a long time. It might cause foaming which could cause a code. So do get it to the right level and see if that changes anything.
Roland
PS Thanks for the rating and kind remarks.