Warren928

I was just watching motorweek television on PBS and saw the amount of dirt and junk that builds up on an A/C evaporator, YUCK!! Studies show that after a while this dirt will eat and destroy your evaporator ( and reduce its output, plus collects mold and foul smells associated with it) , so they were suggesting using Frigid Clean, a product that comes with a fitting that gets mounted on your evaporator housing, then you shoot this foamy cleaner into the compartment and it then removes the dirt that smells and keeps your evaporator like new. The foamy cleaner then leaves through the gravity water exit tube connected to your evaporator box.

Anyone used the Frigid Clean for a spring cleaning of their A/C units or do you use some other product?

What alarms me is that my evaporator was changed 3 times before I got the car, so I want NOT to have to replace it and prefer doing the maintenance to keep it from detoriorating.

Does anyone know where to drill for the Frigid Clean fitting for the evaporator that would be an easy access and most effective? Where is the evaporator box located?

How hard is it to get to the evaporator, if it needs to be replaced?

Warren928

It sounds like a big job to change most evaporators. How many people out there have had to change theirs?

Jim M.

I saw that same program and have the same questions. I had to have the rear evaporator replaced in my 89 and the part itself was $1000.00, plus the labor and freon charging etc. etc. etc. I dread to think what the front one would cost.

Jim Mayzurk
93 GTS

Tony

Its work, but pull the hood(more room), pull the blower motor and reach in with a tooth brush and gentley brush the stuff off. Then go in with a vac nozzle and suck it out..or remove the vents on the center console and shoot compressed air in from the other side...with your shop vac nozzle in the blower duct ready to gather all the flying debris...leaves..dirt...dead mice!
This is is on my list of to do's as well. After 151k miles i really dont see any record of it being cleaned on my car. I did it on my last car at 70 k and it was thilthy! Made a HUGE difference in air flow and cooling!
HTH

Scott M.

So Tony;

Now that the SC is installed, if you just drive faster will that blow all the debris out of the condensor??


Scott

toofast928

I used a product called DWD 2. Just pulled back the rubber junction boot under the cowl cover, and sprayed in the HVAC. DWD foams up, cleans the evaporator, ducts, vents and drains from the A/C drain tube. Any dealership uses a similar product to clean up odors.

bwebb77

Hey toofast928 could you go into a little more detail on the DWD 2 procedure? Like do flush with water or does to foam drain out and what about residue?
Thanks

1981 Shark

>>Hey toofast928 could you go into a little more detail on the DWD 2 procedure? Like do flush with water or does to foam drain out and what about residue?<<

I'd like to know as well. Sounds too good to be true!

Thanks.
David

toofast928

bwebb77,
It comes in a can and the applicator is a long spray wand. Just soot it in the inlet, let it foam, clean for 15mi. The turn on the blower HI setting. No water. but Dozman is correct. The 928 drain hose is shaped like a "Y". If your evaporator is very dirty, than the drain hose could become clogged. Not an easy thing to clear.

PH for DWD 714 917-0683. If your a repair dealer you can try the product for free.

Warren928

I haven't looked under the shark for a drain hose, but you can always blow alittle compressed air up the drain hose if it gets clogged to unclog it. Also works great for the sunroof drain holes.

928FIXER

I've been pulling the front center vent outlet and blowing the evap clean for years.Part of keeping a marginal a/c system working as hard as it can.After blowing the thru the front then I use a commercial evap coil cleaner like the house a/c guys use then rinse with water and let it drain out the condensate drain tube.

Randy V

Sure would be nice if someone could put together a semi-detailed description of the cleaning procedure.

TooFast928?

This is the right time of the year to do that task.

Thaddeus

Yes, one picture would be a tremendous boon to me. I can't tell from the discussion if the coil in question is inside the dash or under the hood! Kind of a critical point, no?

Warren928

I don't have any pic's of this procedure. If someone has pic's of the 1) vent areas and 2) evaporator housings, maybe we could photoshop some arrows on there of possible cleaner access points, and thereby make this post a helpful FYI maintenance to add for everyone's benefit.
Any help out there?

UKKid35

I believe the plastic evaporator housing is often cracked, and will therefore drain in to the footwell as well as through the intended outlet.