blown 87

You get to work on your own car?
Man that is a switch.

SeanR

Only due to the fact a car didn't show up early. I'm glad though, was able to finish Fridays car today, and do mine. Been a fun day.

blown 87

I actually cleaned one today also, they really need a cabin filter to catch that crap before it gets to the evap core.

And that friggen boot, sometimes they will almost jump on, and other times I have had to just walk away after a hour, before I break something.

dprantl

So has anyone been able to fit the GTS filter on a pre-GTS car without replacing the whole evaporator/heater box?

Dan
'91 928GT S/C 475hp/460lb.ft

SeanR

Nope, you have to change the entire box. The set up is way different. I was working on Tom's a couple of weeks ago and was surprised by how the lay out was. If I was repulling my dash and if my A/C didn't already work, I'd have stolen the '94 box Rog has sitting around, just for the filter.

Deantec

so do you need to pull out the dash and center console to get to the condenser or can you access it with very thing in place, sure this would help my Ac but not sure where or how to get to it.
Dean

Alan

I think it is do-able but would not fit the stock filter - you'd need to customize and quite likely relocate the blower resistor (as the later GTS's did) and patch the hole.

You'd also have to cut a slot in the plenum top and make a well sealed removable cover for it then fit a custom sized filter in front of the evaporator - locator clips etc... Quite a bit of work - but then the evaporator would be easy to clean before the first filter went in - hopefully after than no more issue)...

I'm thinking about it - too many other things first!

Alan

Alan

Assuming you mean the evaporator - yes pretty much everything comes out ... painful...

Alan

SeanR

Only if you are pulling it out, you can clean it insitu by moving the blower motor and the rubber boot. It's tight, but doable.

Donald

Sean-
Did you remove the hood?
Thanks,

Alan

Yes - well I assumed it was obvious that you had shown how to do this... and that the OP wanted to remove/replace the evaporator...(but on rereading maybe not...) for cleaning not so hard to access though still fiddly for sure...

Alan

polecat702

I just had to replace my vacuum actuators the comb flap, and the recirculation flap, so I had most of my system opened up. My evaporator coil had the same debris clogging it that Sean's did. I think that for the most part this is the result of years of build up without ever being cleaned. I'm just going to pull the boot out of the way and vacuum the coil, and spray it with the foam coil cleaner once or twice a year.
The thing that was very puzzeling to me was how much crap was between the A/C condenser, and the radiator. It took me almost 3 hours to clean out all the leaves,twigs, sticks, cigarette filters, and dirt caked on the fins of the radiator. Now my car runs cool, and the incoming air smells fresh.
I think that this is something we should all do as part of our semi-anual PM.

Tails

I found that a tooth brush was my best tool for cleaning the debris off the evaporator front, using a cleaning chemical.

I also have a computer cleaning vacuum attachment set that fits onto the end of a standard vacuum hose and is great for the small stuff.

When I did mine I made a note to make a "veledon" filter to fit in the ducting before the evaporator or to fit on the front of the evaporator, still a job to do. Veledon is a course filter material that captures the larger stuff, but the major problem is the fine stuff adhering to the moist evaporator fins.

I will do another inspection and clean at my next service and make and fit the filter.

Tails 1990 928S4 Auto

Manfred

There is a post somewhere describing fitting a GTS filter on earlier cars. I think Gary Knox did it. It's definitely a custom job. I just cleaned mine out a few weeks ago but I couldn't get one of the bolts on my hood to break free so I was stuck doing it with the hood on. I did an average job snaking a small vacuum attachment in there but it would've been better with the hood off and the blower moved out of the way. I've dropped fan speed number two on my AC so eventually going to need to get the hood off and change the resistor pack...

Dan

SeanR

I keep the hood on, my hands are small enough I can actually reach in and replace the resistor pack. It's tight, but I can do it.