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View Full Version : a/c blows hot.(really hot)


johnnyrauder
03-10-2016, 10:07 AM
the clutch is engaging i can hear it.
? is are thoese do it yourself cans a safe thing to use
RubberCtyRauder
03-10-2016, 10:25 AM
You possibly have a freon leak, check for oily coatings on all parts if AC system. A lot if times one needs a new dryer as well
fastblackmerc
03-10-2016, 10:32 AM
Does the compressor cycle alot?

Run the EATC self test.
johnnyrauder
03-10-2016, 10:38 AM
compressor seems to stay on. what is theEATC test/
8UWITH6
03-10-2016, 10:50 AM
Code 24 in the eatc is in your future. Temp control actuator in the dash is stuck on full hot in the dash. 4 hour job at the shop. My DBP did the same thing last weekend. Guess what I am doing tomorrow....... Yay
johnnyrauder
03-10-2016, 10:59 AM
4 hours thats a $400 bill around hear. holy cow how can i be sure thats it
fastblackmerc
03-10-2016, 12:29 PM
4 hours thats a $400 bill around hear. holy cow how can i be sure thats it

Run the EATC self test.

If it is the Blend Door Actuator, the part is about $75.00, labor is alot.

Only use a Motorcraft part as aftermarket parts tend to fail early and often.
fastblackmerc
03-10-2016, 12:31 PM
compressor seems to stay on. what is theEATC test/

See post #12.

http://mercurymarauder.net/forums/showthread.php?t=99619
johnnyrauder
03-10-2016, 12:40 PM
ran the test a 24 code it is. is that the eatc or blend door?
fastblackmerc
03-10-2016, 12:52 PM
Code 24 in the eatc is in your future. Temp control actuator in the dash is stuck on full hot in the dash. 4 hour job at the shop. My DBP did the same thing last weekend. Guess what I am doing tomorrow....... Yay


ran the test a 24 code it is. is that the eatc or blend door?

Blend Door Actuator.

Try running the self tests a few times, sometimes it will make the Blend Door Actuator work...... for awhile.
johnnyrauder
03-10-2016, 12:58 PM
what a bummer at 22kmi i only drive it in the spring /summer/fall. just lost my job so no cash flow. guess ill just open the windows :{ this will haunt me forever. hate whan the car isnt 100%
Turbov6Bryan
03-10-2016, 05:53 PM
Someone here recently said to run the test 5 times in a row, this might free up the blend door

What do you have to lose, try it out.

Let us know
johnnyrauder
03-10-2016, 08:46 PM
will do.........
8UWITH6
03-10-2016, 08:50 PM
Did not help mine. Oh well. Going to dive into this tomorrow. Hope its not my blend door in the heater box.
Turbov6Bryan
03-10-2016, 09:15 PM
Did not help mine. Oh well. Going to dive into this tomorrow. Hope its not my blend door in the heater box.

Pond water:P
fastblackmerc
03-11-2016, 07:27 AM
Did not help mine. Oh well. Going to dive into this tomorrow. Hope its not my blend door in the heater box.

9X's out of 10 it's the Blend Door Actuator. I've never heard of a bad blend door.
8UWITH6
03-11-2016, 08:12 AM
Mode door is more common. We have done them at work several times in CV's and GM's. Have to replace the entire heater box behind the dash.

I hope 9x out of 10 applies this time. It's usually the other way around for me :)
BAD MERC
03-11-2016, 10:10 AM
NEVER add additive or magical stop leak. It turns to syrup and gums up the system. A leaking valve in my customers 2500HD Silverado wound up being a $2200 repair because he poured stop leak in until the compressor locked up.
8UWITH6
03-11-2016, 06:13 PM
NEVER add additive or magical stop leak. It turns to syrup and gums up the system. A leaking valve in my customers 2500HD Silverado wound up being a $2200 repair because he poured stop leak in until the compressor locked up.

What is you saying LOL. We are in the dash sir. :beer:
johnnyrauder
03-12-2016, 03:05 PM
What is you saying LOL. We are in the dash sir. :beer:

i was wondering the same thing
Thomas C Potter
03-12-2016, 06:01 PM
Purist will not like this, but buy a $20 manual valve, 5/8 I believe, this will enable you to cut off hot coolant flow to the heater core.

I have 3Ford cars, all have this valve. lot quicker and easier.

TP in VA
johnnyrauder
03-12-2016, 08:59 PM
what does it look like and where does it go?
8UWITH6
03-13-2016, 08:13 PM
About 2 or 2.5 hours cheating not pulling the dash doing the temp blend door actuator. The gear was stripped out in mine. Replaced gear from another used part I had and put back in. Zero given, Im cheap.
johnnyrauder
03-14-2016, 12:53 PM
About 2 or 2.5 hours cheating not pulling the dash doing the temp blend door actuator. The gear was stripped out in mine. Replaced gear from another used part I had and put back in. Zero given, Im cheap.
sounds like a plan pls. give more details
fastblackmerc
03-14-2016, 12:57 PM
Purist will not like this, but buy a $20 manual valve, 5/8 I believe, this will enable you to cut off hot coolant flow to the heater core.

I have 3Ford cars, all have this valve. lot quicker and easier.

TP in VA

How do you regulate the hot and cold air? Looks like your way is either hot or cold... nothing in between.
Turbov6Bryan
03-14-2016, 04:27 PM
sounds like a plan pls. give more details

Tear apart pass side dash, then you can barely get to the screws

It helps if you have trump hands
ChiTownMaraud3r
03-14-2016, 04:29 PM
If you cancel the EATC test half way in(press the colder blue button), sometimes will leave the door stuck in the opposite position. I did this successfully for about a year until I got tired of the poverty setup and finally fixed it.
Turbov6Bryan
03-14-2016, 04:36 PM
If you cancel the EATC test half way in(press the colder blue button), sometimes will leave the door stuck in the opposite position. I did this successfully for about a year until I got tired of the poverty setup and finally fixed it.

If the gear is stripped the door doesn't move

Make a decision on Louisville?
ChiTownMaraud3r
03-14-2016, 06:20 PM
If the gear is stripped the door doesn't move

Make a decision on Louisville?

Didn't check mine but would click behind the dash sometimes. I figured the gear was stripped, but sometimes would grab during the test?

Not sure, I have a high priority 2 week job in Savannah which the date isn't confirmed but around that time. If pushed back, I might just hop in the car last minute and head down.
8UWITH6
03-14-2016, 09:44 PM
Didn't check mine but would click behind the dash sometimes. I figured the gear was stripped, but sometimes would grab during the test?

Not sure, I have a high priority 2 week job in Savannah which the date isn't confirmed but around that time. If pushed back, I might just hop in the car last minute and head down.

Pacifico homes.
8UWITH6
03-14-2016, 09:49 PM
Pictures of the gear and dash. Bryan posted the other dash picture above.
johnnyrauder
03-18-2016, 07:34 AM
If you cancel the EATC test half way in(press the colder blue button), sometimes will leave the door stuck in the opposite position. I did this successfully for about a year until I got tired of the poverty setup and finally fixed it.i tryed this and i have nice cold air now lets see if it lasts