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Steve, Auto Service Technician
Category: Car
Satisfied Customers: 5494
Experience:  25+ yrs experience as a professional working technician; ASE L1 master technician
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1998 dodge intrepid: it is blowing out warm air..air conditioning

Customer Question

when i turn on my a/c it is blowing out warm air, how do i recharge the air conditioning for a 1998 dodge intrepid
Submitted: 11 years ago.
Category: Car
Expert:  Steve replied 11 years ago.

 You have to add refrigerant through the low side service port ; teh capacity is located on a  label near the rediator.

Expert:  Steve replied 11 years ago.

 That being said, allow me to provide you some advice on this car; I own one myself and love it except for the AC issues they have.

  The evaporator cores on these vehicles are prone to leakage, and have been redesigned.      They also have some pretty so[histicated electronic controls that an AC tech can cheeck and calibrate for you.  They have an evaporator temperature sensor that commonly fails, resulting in no compressor operation.  The in car temp sensor located behind that little hole in the dash on the passenger side often blocks up with dust, changing system calibration.

   It is absolutely critical that the charge of refrigereant be exact in newer cars; they don't hold nearly as much as older card sis; so a couple ounces off can can be 10% or more on some cars.    There is no way to measure with any reliability from cans; a technician will use a digital scale accurate to within a half ounce or so when charging your system.

  All air must be removed from an AC system, or it will not operate correctly.  Air changes system pressures, and takes up space which refrigerant shuold be in.   it also contains moisture, which causes corrosion and other internal damage.   A tech will take a vacuumpump and remove all traces of air from an empty system before charging.

   If the e=system is empty and contains air, the filter/drier must be replaced; it contains a dessicant bag that absorbs moisture to protect the system.  if it is saturated, and the system is operating, it can rupture and spread debris throughout the system causing expensive damage.

   Operating with a low refrigerant level WILL cause compressor damage eventually; the refrigerant carries oil for compressor lubrication.  Running with low refrigerant before the system gets low enough to shut down is kind of like running your engine without oil; compressor failurte always results eventually.  That is one reason exact charge level and finding & fixing small leaks is so important.

   One last word of caution:  NEVER put any type of sealer in an  AC system.   they do work sometimes, but are only for a car about to go to the scrapyard as a last resort.   Once any type of sealer has been added to a system, it is basically unrepairable from that point on.   It cannot be vacuumed for recharge, because sealers will destroy an AC service machine.  AC techs routinely test for sealer in a system before begining repair for this reason.     Sealers solidify upon contact with the moisture in air; therefore if the system runs completely empty or is opened to repalce a component, the sealer in the system solidifies everywhere , destroying the system.   Avoid sealers at all costs!

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