AC/heater core issues

[tim8dena]

im having some issues with my ac....has mind of its own....i thought my drains were clogged since when ac is on(if im lucky) there is no drain coming out under car..i checked under carpets no leaks there....i used vacuum to see if any water was in lines or resevoir...nothing...i had been hearing the dreaded gurgling just before these issues started....tried most of the techniques ive read about to get rid of gurgle......if ac doesnt come on sometimes i can hit floorboard near drain lines and it gurgles and starts up..very cold when its working..heater very hot when it works to.....today i tried cleaning out air lines behind dash and checking around and i noticed my heater core was extremely hot..ac was on but not blowing....for the last several weeks i was thinking it felt a little warm near front cup holder but hot air was blowing out...starting to get frustrated...its hot already here in florida:mad.....when i run PA Soft software the only ac errors i get is the aux sensor error

[motion]

If the A/C is running and there's decent amount of humidity there should be water coming out the the bottom of the car. Check the heater control valve wiring to insure it's connected I believe this valve fails in the full heat position. Just my .02

[tim8dena]

i replaced my aux water pump when i changed my valley pan as i noticed there was a large clog in it..the previous owner had the lower connector(electric) disconnected..not sure how this thing works..but i could never get heat but never problem with the ac...since this is new unit i plugged both connectors in..now i get heat and ac but now all these issues...do you think there is possibility of clog in heater core or possibly still some air in line

[motion]

"Clog" as in maybe the PO used some type of stop leak? Then yes it may have congealed in the core as well, but you wouldn't' be getting any heat in the car.

[tim8dena]

If the A/C is running and there's decent amount of humidity there should be water coming out the the bottom of the car. Check the heater control valve wiring to insure it's connected I believe this valve fails in the full heat position. Just my .02
where is this at to check

[bteeley]

Heater control valve is on the firewall by the brake master cylinder, booster. Has 3 hoses going to it.

[LasVegasE38]

im having some issues with my ac....has mind of its own....i thought my drains were clogged since when ac is on(if im lucky) there is no drain coming out under car..i checked under carpets no leaks there....i used vacuum to see if any water was in lines or resevoir...nothing...i had been hearing the dreaded gurgling just before these issues started....tried most of the techniques ive read about to get rid of gurgle......if ac doesnt come on sometimes i can hit floorboard near drain lines and it gurgles and starts up..very cold when its working..heater very hot when it works to.....today i tried cleaning out air lines behind dash and checking around and i noticed my heater core was extremely hot..ac was on but not blowing....for the last several weeks i was thinking it felt a little warm near front cup holder but hot air was blowing out...starting to get frustrated...its hot already here in florida:mad.....when i run PA Soft software the only ac errors i get is the aux sensor error

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[tim8dena]

i unplugged the heater from my aux water pump....still having similar problems..except heater core isnt hot anymore..ac cold if i can get it to come on...now area near core is very cold...noticed some condensation on evaperator box on driver side and very cold to touch...still getting gurgling sound in dash.....ac comes on if i hit evaperator box on the drivers side..sometimes stays on but sometimes slowly stops working or blowing as much air after 15-20 minutes

[tim8dena]

replaced aux sensor...no more codes there..however still same issues...i reconnected sensor on aux water pump as well...now back to the issue of hot to touch heater coil behind dash....i bled system again..still didnt help....tomorrow morning ill remove aux water pump again and see if valve stuck open..i have a back up one i can use that i pulled off a wrecked 540 few weeks ago..yesterday i was getting ice cold air today nothing...my compressor kicks on etc...ran PA Software again and all electronics seem fine...must be some type of clog some where or valve left open..luckily today will only be 85 degrees..but on my black leather feels like 185

[tim8dena]

anyone have any suggestions..i read somewhere about running around or bypassing heater core