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  Monday, July 22, 2024 Mini OS

Hey everyone! Thanks for coming to my website.

Check back often, as the development team continues to release the site it will be evolving rapidly. Feel free to call my cellphone (228) 234-NEEL.


-- Neel K. Sanghi

Need a website for your business or non-profit organization? I can set your website up for you from start to finish -- everything included. You simply email me the information about your organization. I, Neel K. Sanghi, will personally design, and host your site for $39.95/month. No setup costs, and you can cancel at anytime!

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Mini How to do stuff(s) by Neel K. Sanghi

Here you will find instructions on how to do stuff like fix your car's A/C, make stuff, plus other stuff.

This is a new page as of 4-15-07... this is not yet a complete how to... I'll remove this when it is done...

8-1-07: Added content/edited

A/C Repair

Car A/C systems are actually really simple to repair. In most basic systems you have only a few basic components: compressor, refridgerant, receiver/dryer, accumulator, expansion valve or orfice tube, codenser and evaporator.

You have two accepted refridgerants R12 (vehicles pre 1994 US), and R134a (vehicles 1994 US and later) for automotive A/C's in the US. This isn't to say that just about any compressed gas wouldn't work, because most any would. Some may be more hazardous and less effecient. Perhaps even the molecular size of the substitute gas may be too small to be retained by the walls of the A/C hoses designed for the original refridgerant.

Anyway, you basically check your compressor to see if engages. You do this by starting the car, and turning on the air condition. If you hear a 'click' and the engine idles down as if it is burdened by an additional load then there is a good chance that your a/c compressor clutch engaged (check under the hood to see if its spins) and the compressor is most probably fine. If this doesn't happen then it is most probably for one of these reasons:

  • A. Clutch On Compressor is Bad
  • B. System is equiped with a low refridgerant switch
  • C. Condenser fan/sensor not is malfunctioning

Because your A/C probably quit working because you sprung a leak and lost your refridgerant it's most likely going to be situation B: the system is equiped with a low refridgerant sensor. In this case you can test your compressor by finding your low pressure sensor which will probably be located on your receiver/dyer/accumulator and jumpering (shorting/crossing) the wires that go to it (the sensor -- just 2 wires -- real simple). Then starting the car, and turning on the air condition and listen for the compressor. If you look under the hood you can even see the clutch turn the compressor. WARNING: IF YOU SUSPECT THAT YOU A/C IS LOW ON REFRIDGERANT DO NOT CONTINUE TO RUN YOUR COMPRESSOR. Use this only to test it for a second as the refridgerant is a carrier for the oil which lubricates the system (mainly the compressor). If you sprung a leak then compressor maybe low on oil and could lock up with out proper lubrication (hence the need for a low pressure shutoff switch).

If you hear a squeeling noise when you turn your A/C on its probably because your belt is loose. If your sure your belt is adjusted properly then possibly your car is not using a low pressure switch and your compressor is low on oil which would create additional resistance in the compressor which might cause the belt to slip (squeal).

If the compressor still doesn't come on then you could have a fault in your condenser fan or circuit and there may be no issue of a leaky system at all. This is great for R12 car owners who don't want to do a retro fit to 134a.

If your compressor engaged at all its a good sign (even if it squeeled). Your next step is to find the leak through using UV dye oil/refridgerant. This test may actually make your A/C work again! This involves adding additional refridgerant or oil with UV dye (most common) in it, or some other dye that can be viewed with the naked eye. This dye can be bought by anyone at your local autoparts store. Then start the car and turn the A/C on. Colored refridgerant will ooze out anywhere there is a leak in the A/C and you can then see them with a UV light (ideally) or even with the naked eye (large leak). If the/a leak is in the evaporator core (part located inside your dash that looks a bit like a radiator) than the dye will be invisible.

Okay, so your A/C is working and blowing cold air you added dye/refridgerant to find the system. So why fix the leak now?

  • A/C will work more effeciently, consistantly and significantly colder
  • Save money on buying refridgerant repeatedly
  • Save time in the long run from having to revisit the problem
  • Save the environment, and the ozone from chemicals


Oneliner Feature Disabled to restore focus on permament content.

Added Oneliner Feature

12-10-2007 is being re-evaluated

Auxilary send-to feature functioning on Sanghi IT web-to-cell

4-27-2007 Explorer repaired/updated

Search engine repaired.

Making some changes, evolve with me.

Sanghi IT Labs.

Free Open Source DVD playing software added to the Downloads section.

Sanghi IT Labs unveils the all new

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