Everyone rebuilding their A/C system should clean out their HVAC assembly box! - PeachParts Mercedes-Benz Forum

eatont9999 · #1 05-20-2013, 08:47 PM

Quote:

Originally Posted by DeliveryValve

I did find a dime down in the Heat Exchanger slot.

.

I could pay you a dime to do mine!!!

When I did my A/C rebuild last year, I was pretty sure that everything was fairly clean. However, I did not pull apart the HVAC system. Maybe I can run vacuum hose in there if I find a good dash and do the swap.

I have a piece of wood wedged in my blower compartment to keep the fresh air flap 100% closed. I did that to maximize A/C efficiency but I can see the other benefits. Keep us posted on what kind of filter setup you design.

daw_two · #2 05-20-2013, 10:47 PM

DeliveryValve ----

Your evaporator didn't look as bad as mine and you got paid more

I only found a penny down in the defrost area. I like the idea of a cabin vent. Maybe something over the bottom of the blower???

Just for comparisons sake, here's what the 1984 Light Ivory evaporator looked like:

Zulfiqar · #3 05-21-2013, 08:28 AM

I once removed a 98 camry evaporator ( for a college student freind) - that car also does not use a filter, and it was similar to these pictures, Toyota sold a product in a can that was really powerful it was expanding foam and it pushed itself through the evaporator, heater core etc literally melting the dirt. btw I had to do 4 passes back and forth to make it brand new again.

But just saying, I think the product being sold on pelican with a long straw is similar.

oddball bit

toyota provided a slot for a filter in that car - yet they forgot to install it in the factory.

JB3 · #4 05-21-2013, 08:34 AM

maybe you could duct the climate control air inlet to the engine air filter, and use the same air filter for both applications?

throwing out ideas, however ridiculous

martureo · #5 05-21-2013, 09:56 AM

Quote:

Originally Posted by JB3

maybe you could duct the climate control air inlet to the engine air filter, and use the same air filter for both applications?

throwing out ideas, however ridiculous

I think you'd want to throw that idea in the brown file. I wouldn't want hot or cold blowby coming through my vents!

JB3 · #6 05-21-2013, 10:16 AM

Quote:

Originally Posted by martureo

I think you'd want to throw that idea in the brown file. I wouldn't want hot or cold blowby coming through my vents!

well, that would certainly be bad.

I was thinking more along the lines of an aftermarket cone airfilter with a T right after the cone, and ducting that runs to the engine from there.

however, for that amount of work, he might as well just adapt a cabin air filter from some other application that fits nicely.

Simpler=Better · #7 05-21-2013, 10:56 AM

Quote:

Originally Posted by JB3

well, that would certainly be bad.

I was thinking more along the lines of an aftermarket cone airfilter with a T right after the cone, and ducting that runs to the engine from there.

however, for that amount of work, he might as well just adapt a cabin air filter from some other application that fits nicely.

I've been thinking of doing this with my DD. I can only imagine the crap stuck in there.

DeliveryValve · #8 05-21-2013, 10:19 PM

Quote:

Originally Posted by eatont9999

..... Keep us posted on what kind of filter setup you design.

Quote:

Originally Posted by JB3

maybe you could duct the climate control air inlet to the engine air filter, and use the same air filter for both applications?

throwing out ideas, however ridiculous

I'm planning to use the limited space in the cowling to add in a cabin filter for the outside air intake. I am also going to put a cabin filter for the inside air intake.

So far this is for the outside air intake.

This is the cowling opened up with the windshield wiper assembly removed. Not shown, but part of the wiper motor sits on top of the HVAC intake. It would of been easier to add in a filter if this was not the case.

Another shot.

Hopefully the filters I choose will be sufficient because they are on the small side. They are for the 1999 - 2002 Chevrolet Silverado. They come in a pack of two and Measures 5 1/4" x 9 1/8". Originally suppose to be installed side by side in the Silverado HVAC box. But I will use one for the outside air side and one for the inside air side.

I chose this filter because of the space limitations in the cowling. This is where I plan to place the filter. I am going to make some ducting from fiberglass to snake around the windshield wiper motor and connecting rods.

Any thoughts?

.

strelnik · #9 07-16-2014, 09:52 AM

Quote:

Originally Posted by DeliveryValve

I'm planning to use the limited space in the cowling to add in a cabin filter for the outside air intake. I am also going to put a cabin filter for the inside air intake.

So far this is for the outside air intake.

This is the cowling opened up with the windshield wiper assembly removed. Not shown, but part of the wiper motor sits on top of the HVAC intake. It would of been easier to add in a filter if this was not the case.

Another shot.

Hopefully the filters I choose will be sufficient because they are on the small side. They are for the 1999 - 2002 Chevrolet Silverado. They come in a pack of two and Measures 5 1/4" x 9 1/8". Originally suppose to be installed side by side in the Silverado HVAC box. But I will use one for the outside air side and one for the inside air side.

I chose this filter because of the space limitations in the cowling. This is where I plan to place the filter. I am going to make some ducting from fiberglass to snake around the windshield wiper motor and connecting rods.

Any thoughts?

.

EXCELLENT IDEA! Especially true since few people clean their cars yearly with ammonia to kill germs, or de-ionize them.

Mölyapina · #10 07-16-2014, 03:40 PM

Quote:

Originally Posted by vstech

on the plus side... I usually find hundreds of marbles when I clean out one of those systems...

Guests losing their marbles over the crappy A/C?

Air&Road · #11 05-21-2013, 02:02 PM

Quote:

Originally Posted by Zulfiqar

I once removed a 98 camry evaporator ( for a college student freind) - that car also does not use a filter, and it was similar to these pictures, Toyota sold a product in a can that was really powerful it was expanding foam and it pushed itself through the evaporator, heater core etc literally melting the dirt. btw I had to do 4 passes back and forth to make it brand new again.

But just saying, I think the product being sold on pelican with a long straw is similar.

oddball bit

toyota provided a slot for a filter in that car - yet they forgot to install it in the factory.

You can get that foam cleaner at Home Depot or anywhere that refrigeration supplies are sold. It works great, but does not substitute for disassembly and cleaning.

daw_two · #12 05-21-2013, 02:08 PM

Quote:

Originally Posted by Air&Road

You can get that foam cleaner at Home Depot or anywhere that refrigeration supplies are sold. It works great, but does not substitute for disassembly and cleaning.

I used the foam cleaner on the evaporator and heater core. It would have had very limited cleansing power without disassembly. In addition, these type of products don't require rinsing on coils that produce condensation.

Zulfiqar · #13 05-21-2013, 04:33 PM

Quote:

Originally Posted by Air&Road

You can get that foam cleaner at Home Depot or anywhere that refrigeration supplies are sold. It works great, but does not substitute for disassembly and cleaning.

This foam was not the home depot type thing, the can said made in japan something and it came out like heavy shaving foam under massive velocity, it would react (start to grow) when it touched dirt and the foam would turn gray and finally into black ink colored stuff after about 10 minutes.

Smelled heavily like lemony butane.

msybe vstech knows of something similar coz that toyota dealer says they dont have it anymore and its no longer supplied as all newer models have cabin filters.

I had to change the expansion valve on that one so when I had the dash apart I cleaned out everything, all ducts were major dirt caves too.