2001 Mercury Sable DOHC S-serial V6
My wife's car threw a 401 the other day and I began surfing the web for intel. I found plenty of it - Especially here - TY !
The 401 still exsists, after pulling the UIM (Upper Intake Manifold) and cleaning everything about it (see note below) and re-installing everything as if I were never there (see new issue below). I replaced the UIM gaskets, air filter and sparks while "there" as well.
Note: I have read the (included) links below and many, many more posts, blogs, and sources of information as well.
While the UIM was off, I looked over it completely. I also looked very closely at the seperated throttle body. I did not recognize any ports - Or what I would consider a port anyway - Which could be or which were clogged of carbon build-up such as that mentioned in the articles. This left me wondering if perhaps the three ports were changed by design in later models being that it was discovered as an issue (?). I did see a "half moon" area on the throttle body but it contained one large through port.
Regardless, I cleaned everything with pipe cleaners and solvent before re-assembly. I didnt even see a place to scrape with a screwdriver (to remove the carbon build-up) as suggested somewhere while reading input. At this point, I am seriously considering replacing the sending unit.
Is there any further insight which may drop the 401 ? I am willing to tear everything down again without hesitation so "fire away". I'd especially appreciate further detail of the mentioned (clogged) ports by size or some other easily recognizable feature.
New issue: Today, during the same call which informed me of the 401 re-surfacing, I was also told that...............drum roll..............The A/C is blowing nothing but hot air - The vent alone is blowing nothing but hot air - And the windshield defrost .......HOT AIR ! Wonderful. Considering, to my knowledge, I didnt even touch anything related to the A/C or venting system while tearing down for the carbon build-up removal, this one has me completely baffled.
I am wondering if by having the battery disconnected over night (While waiting for the UIM gaskets to be transferred to my local Autozone), could it have effected something with the computer based climate control which needs resetting. Or is there a possibility of the heater only somehow being engaged no matter the selection - By a missing connection (of my own doing). I have confirmed that everything is proper with the A/C system (Compressor responds, freon is strangely dead center for proper level of charge, etc), and even gone as far as to double check all connections regarding the UIM tear down.
Im popping a flare on this one - Im lost. Any help with this issue or direction pointing would be immensely appreciated being that Im getting the evil eye from the wife at this point
Thanks for the response in advance
Ft Hood TX