2001 Mitsubishi Eclipse AC blows hot after numerous repairs

Tiny
SLOMOTIONRIDER
  • MEMBER
  • 2001 MITSUBISHI ECLIPSE
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 140,000 MILES
Hello,

I am looking for some guidance with my '01 mitsu eclipse a/c. I have taken it to the mechanic on 3 occasions now to get various parts replaced. The ac still blows luke warm after having the evaporator core, and condensor replaced. They have put dye in the system on 3 occassions and everytime they put in dye and I take it back its a new issue. At this point I think they are causing the damage as its been one thing after another. So far the repair cost has been $1500 with no resolution. So my question is, why would the air still blow lukewarm? It has its moments of blowing cold but even then its not as cold as it was when it was working correctly. I am afraid to take it back without any info as I feel they will hit me with some more replacement parts. Any ideas?
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Tuesday, August 10th, 2010 AT 9:37 PM

9 Replies

Tiny
MHPAUTOS
  • EXPERT
Hi there,

Thank you for the donation,

This hit and miss attitude of some mechanics is a worry, are they A/C accredited? They should be doing system pressure readings as this will give a good indication as to what the problem is, if they do not know this, I would be cutting my losses and finding a work shop that is A/C accredited.

Mark (mhpautos)
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Wednesday, August 11th, 2010 AT 9:03 AM
Tiny
DR. HAGERTY
  • MEMBER
I suggest you find out more about the laws in your region. If this "repair" facility is just taking your money and not giving you some resolution, they are what is commonly known as thieves. The issue may well have been the evap core or the condenser or whatever it was, but if it is not working when you go to pick up the car then they are obligated to make it so, for the quoted price. I see that my mate from Australia has posted with his opinion, as always, I agree with Mark.
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Wednesday, August 11th, 2010 AT 9:12 AM
Tiny
SLOMOTIONRIDER
  • MEMBER
Yeah and thats where I am stuck because they are a large chain of repair shops that operate locally and they have good reviews with the BBB. They have told me the run pressure tests every time I take the car in and insert dye into the system to see where the leaks are. My worry is, can those pressure or vaccuum tests cause more leaks? It just seems that every time I take it in a new leak is found. Which in mind doesnt make sense, since the dye would show the numerous leaks, and not a new one every time I take it in, correct? Also does the radiator/coolant play a role in the cooling system? Appreciate the help.
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Friday, August 13th, 2010 AT 5:45 PM
Tiny
MHPAUTOS
  • EXPERT
Hi there,

This can be very frustrating, as far as the dye test, this is a dye that is added to the refrigerant and will stain around any leaks, the system is under pressure all the time, different pressures depending on which pat of the system you look at, so if there is a leak, the dye will leach out under normal system pressure, system is not pressure tested as is a cooling system can be to help detect leaks, so any leak should be easy to see, with the exception of the evaporator with is up under the dash and counseled, but this can be check with an electronic sniffer in the vent, as for the radiator it has no direct relationship with the operation of the A/C system apart from helping to dissipate extra heat from the condenser, but this is fairly inconsequential as the condenser and it's fan looks after this process.

Mark (mhpautos)
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Friday, August 13th, 2010 AT 7:42 PM
Tiny
MONSTIRZ
  • MEMBER
Sometimes a/c pumps are reman and leak right away, it could also be a psi switch cycling on and off too fast. If that is defective you will only occasionally get cold air and improper cycling of the pump which will eventually fail, I live in the hot desert and have played this game before
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Sunday, August 29th, 2010 AT 12:22 AM
Tiny
MONSTIRZ
  • MEMBER
I wanted to add that mitsubishi eclipse 01 has an automatic compressor controller right behind the glovebox(left side) that could be the problem to your a/c pump not working correctly
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Sunday, August 29th, 2010 AT 12:39 AM
Tiny
SLOMOTIONRIDER
  • MEMBER
So I took the car back to the same place and told them that the amount it cost to have them perform repairs to not have the ac function correctly was not just. As a result they said they would take it back and look at it for no cost. What they came up with about a week ago was that the expansion valve that I supplied them from the parts store was defective and that I needed to get them another one. So I went and got a new expansion valve and took it back so they can perform the replacement. I just went back today to pick up the car and they informed me that the ac still wasnt blowing cold and the reason for that was because Mitsubishis only can use Mitsubishi brand expansion valves. They said they found this out after they called an AC repair shop and that they were having the same issue with a Honda. They claim that imports (Mitsu, Honda etc) can only take a replacement expansion valve that is from the dealership. After so much back and forth with these guys Im hesistant to believe that, but I pose the question to you guys, is this remotely possible? Can a Mitsubishi Eclipse expansion valve only be replaced by an authorized Mitsubishi expansion valve part? Or can I use an expansion valve that I purchased at a reputable national chain ( Oreilly Checker)?
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Wednesday, September 1st, 2010 AT 9:17 PM
Tiny
MHPAUTOS
  • EXPERT
Rubbish I say! Why would a company spend tens of thousands of $$ tooling up to produce a component that can never be used? And what about this smoke issue, this will not be a TX valve issue.

Mark (mhpautos)
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Wednesday, September 1st, 2010 AT 9:53 PM
Tiny
SLOMOTIONRIDER
  • MEMBER
So I took it back and had them order an expansion valve since they said the valves I took them werent working. They kept the car for a few days and returned it with only slightly colder air. They say it blows at 55-60 degrees when idling and it gets down to 48 degrees while driving. Dunno if these numbers are acceptable/correct but it surely doesnt feel like the ac is as cold as it was before they got their hands on it. The manager said that the final step is to turn off the heat valves? Dunno what that means, but that he thinks there is a flap in the dash that is not closing correctly and as a result the hot air mixes with the cold air producing those cool, not cold air. Is this true? He says that while the temperature is still hot they would close those heat valves and when it starts getting cold they would open it again. He suggested this route instead of taking the dash apart to find that faulty flap to repair. Anybody know anything about this claim?
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Friday, September 10th, 2010 AT 4:01 PM

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