AC issues and Expansion Valve

[jayfrem]

Also Think

Amazon product ASIN B004J1MTZA
Yes, LC 200 no doubt has an improved system.

Is this a good brand to buy off Amazon ?
How many are needed for the clutch ?

 

[jayfrem]

Jayfrem wrote:

So i hd cooler AC when i replaced my fan clutch but rear AC is not cool.

Better airflow through the A/C condenser and radiator is always good. Many folks modify their fan clutch by replacing the silicone fluid with a heavier (CST) version for increased fan performance.

In traffic coolness of AC is dropping. On Free higjways AC is great.

Normal. You have less airflow (ram air) at lower speeds and obviously lower engine rpm (which drives the compressor). The A/C should always work better at highway speeds.

I am thinking:

- Power wash with low pressure radiator fins after taking radiator grill

It won't hurt to carefully clean both the radiator and condenser. Consider using a cleaner before pressure washing and be careful not bend the fins over. Don't spray at an angle.

- Should i replace the brand new Aisin clutch fluid with the fluid viwcocity 10,000 ?

I wouldn't open up a fan clutch for less than 15K. I run 20K in mine.

- My 1999 has an electrical fan than upfront wondering if i can add another one ?

A single fan should be enough if working properly in conjunction with your fan clutch.

If i hose the radiator with water and turn on AC it coola down pretty well.

To be expected. Heat can only flow from a hotter media/place to a cooler one. The cooler the release media is the faster this process can occur. Other considerations as well. But suffice to say...this is normal.

Thanks a lot for the above input.

My 1999 LC has still its stock condenser.
Would replacing the condenser help ?

It has been cleaned during last service when the system was vaccumed and recharged.

 

[flintknapper]

Also Think


Is this a good brand to buy off Amazon ?
How many are needed for the clutch ?

I have used that exact product in my fan clutches and they have both done well for a number of years.

A single 50ml bottle should be enough to do your fan clutch. Depending upon how well you are able to drain it...you probably won't use the entire bottle. Measure the amount you take out and replace it with the same amount of heavier fluid. Mine both took between 45-48 ml and drained my overnight....so got most of the old fluid out. IF you put too much fluid in...the fan will run all the time.

 

[flintknapper]

Thanks a lot for the above input.

My 1999 LC has still its stock condenser.
Would replacing the condenser help ?

It has been cleaned during last service when the system was vaccumed and recharged.

The stock condenser is a good design. If not damaged in any fashion...I would not replace it. I believe getting the best airflow 'possible' and making sure your refrigerant charge is correct will result in the system providing all the cooling it is capable of.

 

[jayfrem]

The stock condenser is a good design. If not damaged in any fashion...I would not replace it. I believe getting the best airflow 'possible' and making sure your refrigerant charge is correct will result in the system providing all the cooling it is capable of.

I was thinking to replace the stock condenser with a Denso.

I will try to power wash radiator and replace clutch fluid.

Shall i open up the brand new installed “ Aisin” fan clutch or use the stock old one ? The old stock one seem to be working altough i did get an improvement when i put the new one.

For the record i replaced my compressor a year back with a brand new OEM Denso compressor off Amazon.

Jay