my '05 Lincoln Town Car ac seems to work ok first time each day but not as well on succesive start ups when running errands. Last Summer was when I first noticed it (Bought the car in Winter of '09). Took it to my mechanic and he said he put .3 # of R134 and gave me instructions on climate control settings for opitimal cooling (manual overide to dash only, fan speed @ midrange, and recirculate). I have found this to be of very little help. Here are some of my other observations. Cooling is better if "recirculate" is delayed for a few minutes on initial running, and actually reduces cooling performance on subsequent later restarts. I have done some research on this mdel and have found it be notorious with regard to "Blend Door" problems. Anecdotally, I have heard what sounds like doors/flaps moving, shutting or something for quite sometime after the engine is off. In looking around under the dash just to see if anyhting looked amiss, I noticed the aluminum pipes, which assume are part of the evaporator component, were some blazing hot I couldn't even touch the. That doesn't sound right, and I know that they couldn't possibly be that hot whenb the engine and ac is first started each day(again, that's when cooling is at best). So, could there be a problem with the evap? I couldn't see the cooling fins, so I don't know if they are clogged or not. Finally, what other checks can I, a layman, do before I just take it somewhere? I know low and hi pressure gauges can tell me a lot but I don't have them, and and am unsure I would feel confident diy even if I did. Is there a way to do a climate control code search as with some other vehicles by pusing 2w setting simuntasneously and waqiting to see waht digital code appears? Thank you so very much, in advance. Bill
Jul 28, 2011 at 8:12 PM
