I.m replacing ac compressor,expension valve and reciver-dryer.
Ac never work fine in this car I own since 2006. Finly somthing blow out when I was driving, saw cloud of fumse behide and loud tump.After replacing those parts I will evacuate system using small vaccum pump and refill with 134a refrigarant+ some oil. Please any advise before I'll start working on it. Thanks in advance.
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When you change out the compressor, the receiver dryer needs to be replaced as a matter of prevention. The condenser is fine as well as the evaporator but the orifice tube should come out because the whole system should be flushed. That is why overhauls on AC systems are so expensive.
the compressor may be low on freopn but, the fan problem is most likely the fan motor as it is the low temp fan and will run more often than both fans...to test see if you can switch the fan plugin to the other fan watch carefully that it does not get too hot as the second fan is a safety fan that works as high temp or when using the A\C
Check for ac low pressure switch gone bad.If the expansion valve goes bad it will cause that problem,also, make sure there is enough freon in system.If you could get some one to put ac gauges on the vehicle you could tell a lot about the system,It would tell if the low side was too low(bad expansion valve)or if it was too high on the low side or high side (bas expansion valve or block dryer or condenser.