[DML] Re: Poor airflow thru heater-A/C

["sweetp01569" <paul.sweet@xxxxxxxxxxxx>]

Perhaps I have the same issue.  With my blower on the highest 
setting (with AC on or not), it seems like mediocre flow through the 
dash and door vents, but hardly any air throught the floor.  I 
didn't even know there were floor vents until I read these posts!  
Also, AC is not that cold,either.

Could I have clogged evap and drain hose, or could my blower also be 
reversed?

Also, where is the end of the drain to attach a vac?  

Thanks,

Paul

--- In dmcnews@xxxxxxxxxxxxxxx, Jake Kamphoefner <jakekamp@xxxx> 
wrote:
>  
> Dave,
>  
> I was recently in the same situation.  Here's a couple things I 
checked to fix my problem:
>  
> - Make sure the blower and squirrel cage are correct.  There are a 
lot of GM equivalents that fit perfectly, but the blower motor 
either turns the wrong direction, or the squirrel cage is cut to the 
mirror of the DeLorean (that is, it is made so that turning the 
opposite direction causes the air to flow the same direction).  
After I replaced my blower with an OEM that I bought amongst a hand-
full of other parts, my air flow highly increased.
>  
> - I also resealed the infamous foam on the back of the A/C box
>  
> - Cleaning the evap?  Here's how I did it.  I taped a wet shop vac 
on to the drain hose.  Then I removed the blower motor and the 
resistor to give extra room to get my hands in, and pulled back my 
carpet to lay down some old towels.  Start by dumping a little water 
into the evaporator box, then use your contortionist skills to reach 
into the box and pull that gunk out.  Keep pouring water through it 
and make sure it's making it to the vac.  You may have to stop to 
unclog the line a couple times.  Then I put a length of clear hose 
on the end of my garden hose, and fed it into the box.  With the 
hose on *slow* (it's a lot more water when coming out of the small 
clear hose), I nozzled the tube with my thumb and sprayed the 
evaporator for a long time.  Be careful not to get more water in 
than the drain hose can handle.
>  
> Oh yeah, and this job sucks.  But it's better than removing the 
evap.
>  
> Jake




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