It ain't rocket science. Firstly, there's a cooling circuit. The performance
of this can be entirely established by the high and low side pressures and
temperatures. If the high side pressure / temp is to high, the heat isn't
coming out of the condenser, or there's too much refrigerant in the system,
if these are checked ok, there's a more serious problem which should be
obvious to anyone with the relevant knowledge.

If the cooling circuit is working ok, it's a control problem (jammed heater
valve, incorrect control flap operation, etc.)

If you take your car to a dealer and they charge you serious money to fix
the problem you should expect that they should solve it. They either fixed
the problem they diagnosed, or they didn't. Either way, they should feel
obliged to fix it properly for no further cost.

Some systems pick the revs up at idle to power the ac, sounds like this is
also going wrong but if the revs are going too high, this doesn't explain
lack of cooling.


www.poolecool.co.uk






"The Green Potato" <a@a.a> wrote in message
news:14c25$487f46d7$18d67f8a$10467@KNOLOGY.NET...
> Hello all,
>
> Here's my story:
>
> We took our 1994 del Sol (SOHC V-tec) to the dealership to get the air
> conditioner fixed. They stated the expansion valve and the evaporator was
> bad. We agreed to the $710 repair estimate. We retrieved the car at noon
> and by 12:14pm the air went out again. This is the second time this has
> happened.
>
> The "service assistant" also stated the condenser fan (which was replaced
> in 2003 by a shade-tree mechanic) was 75% too small and would also need
> replacing if we wanted the a/c to blow below 40°F. We are deciding whether
> or not to take it back....as we feel completely betrayed by the
> dealership.
>
> My question is WHY doesn't the a/c work??? In addition, after they
> "repaired" it, the engine idles well below 1Krpm. OR it randomly revs up
> to 3Krpm.
>
> I just don't get it guys...am I cursed???
>
> Any advice is sincerely appreciated...
>
>
>