[hserus]

Originally Posted by Gannu_1

No the throw of air is the same; just the temperature dipped.

I change the cabin filter every 6-8 months now since they are dirt cheap. Have to remove the blower and do a proper cleaning now; have never done this activity so far.

Before doing that buy the Wurth ac cleaner spray and this has a long, flexible tube you’re supposed to stick as far up your ac drain hole as possible and empty a can into it (or maybe about half a can given a hatchback). Follow the instructions about running the ac and leave door / windows open on your car for about half an hour due to the smell of the spray and also of the dislodged dirt.

[silverado]

Originally Posted by hserus

Before doing that buy the Wurth ac cleaner spray .

Have tried this using 3M AC cleaner spray. You need to use entire bottle worth Rs500 in one go. It sprays foam and you need to recirculate that in the AC tubing, after sometime it eventually throws out foam.

My nano had lost all the gas, this being summer it costed me 2.2k for testing and refilling of gas.

[Gannu_1]

Originally Posted by hserus

Before doing that buy the Wurth ac cleaner spray and this has a long, flexible tube you’re supposed to stick as far up your ac drain hole as possible and empty a can into it (or maybe about half a can given a hatchback). Follow the instructions about running the ac and leave door / windows open on your car for about half an hour due to the smell of the spray and also of the dislodged dirt.

I did the evaporator cleaning last weekend with a foam cleaner spray (Mannol 9971). The evaporator coil was clean without a speck of dirt on it (probably because I change the cabin filters on time). This was the condition of the evaporator coil viewed with the phone through the cabin filter cavity:



The drain hole is not easily accessible on the diesel Polo/Vento since the turbo + EGR assy blocks the rear of the engine in front of the firewall. Not accessible from below the car either. OTOH, on the petrol models, this is easy and can be accessed:



I used the spray through the central AC vents (being closest to the evaporator coil) and through the cabin filter cavity and went with the instructions on the back of the can.



Since the coil was clean, I really doubt if this activity helped in my case. I had kept a drain tray at the bottom to check the drained water + foam mix - came clean.

[Jaggu]

Excellent do it yourself thread, really helpful in understanding the working and how to go about. Did you procure the tools and stuff at offline shops or online? If you have online links, do share will be very useful for others.

[Gannu_1]

Originally Posted by Jaggu

Excellent do it yourself thread, really helpful in understanding the working and how to go about. Did you procure the tools and stuff at offline shops or online? If you have online links, do share will be very useful for others.

Thank you Jaggu.

I sourced the manifold kit and the ref. can from a shop that deals with car AC spare parts here in Chennai - Ramdev Cool India

While these are showing up on Amazon, the reviews are a little shady and I think it makes sense to get them from a shop than go through the hassles of receiving a defective product, replacement, refund etc.