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#2385981 - 10/09/11 05:06 PM Nothing but hot air . . . blend door actuator?
dubch87 Offline
Member

Registered: 04/24/08
Posts: 380
Loc: Raleigh, N.C.
As the title says, nothing but super hot air is blowing at every temperature setting (EATC). Is it bad that I've been reading these forums so much that I immediately knew what was wrong?

I've been doing some searching, and it sounds like you don't have to entirely pull the dash to get to the blend door actuator. Any tips for getting to this stupid thing?

Also, checked with Tasca, and found "Door actuator, temperature blend, all models, w/atc". Sounds like the right part, but can anyone find a part number so I can verify? The part number on the piece in the p71interceptor.com image didn't come back with any parts when searched.

A million thanks.
_________________________
2000 Crown Victoria LX, 2.73 open with P71 dual exhaust, .141 million miles, WORKING message center on digi-dash (Thanks, enslow!)
Purchased July '05 with 49k senior-driven miles

Under the Hood: 2004 zip tube & air box and valve covers; ADTR P&P Plenum, 70mm TB; alum. x-over intake manifold Suspension: Motorcraft HD shocks x4, complete Moog front-end, Springs - Eaton Coil Spring Specialties (PI) in front, Ford PBA code in rear, Sway bars - P71 front, 21mm rear Body:Turn-signal sidemarkers and bumper-tuck FTW!

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#2386514 - 10/10/11 04:30 PM Re: Nothing but hot air . . . blend door actuator? [Re: dubch87]
dubch87 Offline
Member

Registered: 04/24/08
Posts: 380
Loc: Raleigh, N.C.
I ran the EATC module self-test this morning and got DTC 025 - blend door failure. The strange part is that driving to and from work today, I had cool air again. This was AFTER I ordered the blend door actuator from Tasca.

I'm starting to think I should give in and pull the dash so I can replace the heater core too. When I pulled the heater hoses to replace the blower motor speed control module two months ago (seems to be a pattern here), there was gunk and rust. Plus I've been fighting rust in my coolant for awhile, and the radiator looks clean.

Woe is me.
_________________________
2000 Crown Victoria LX, 2.73 open with P71 dual exhaust, .141 million miles, WORKING message center on digi-dash (Thanks, enslow!)
Purchased July '05 with 49k senior-driven miles

Under the Hood: 2004 zip tube & air box and valve covers; ADTR P&P Plenum, 70mm TB; alum. x-over intake manifold Suspension: Motorcraft HD shocks x4, complete Moog front-end, Springs - Eaton Coil Spring Specialties (PI) in front, Ford PBA code in rear, Sway bars - P71 front, 21mm rear Body:Turn-signal sidemarkers and bumper-tuck FTW!

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#2386655 - 10/10/11 08:40 PM Re: Nothing but hot air . . . blend door actuator? [Re: dubch87]
PHoganDive Offline
Over the Hill

Registered: 06/11/11
Posts: 1520
Loc: Mass, USA
Originally Posted By: dubch87
I ran the EATC module self-test this morning and got DTC 025 - blend door failure. The strange part is that driving to and from work today, I had cool air again. This was AFTER I ordered the blend door actuator from Tasca.

I'm starting to think I should give in and pull the dash so I can replace the heater core too. When I pulled the heater hoses to replace the blower motor speed control module two months ago (seems to be a pattern here), there was gunk and rust. Plus I've been fighting rust in my coolant for awhile, and the radiator looks clean.

Woe is me.


The radiator and heater core are aluminum, no rust from them. The rust comes from the cast iron engine block. Good coolant has corrosion inhibitors in it to keep it from rusting, but as it ages, they wear out, and it will rust.
_________________________

2006 CVPI w/120K, J-Mod, BOC Tune, Magnaflow Catback Duals, headlight relay harness installed w/ 80/100 watt bulbs, HUGE difference...:)

1996 GMQ 116K miles, Bilstein shocks, otherwise stock (Retired 7/2011)

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#2388206 - 10/13/11 11:57 AM Re: Nothing but hot air . . . blend door actuator? [Re: dubch87]
99_03PantherS Offline
Poobah

Registered: 03/22/03
Posts: 9471
Loc: NW side Chicago
this happened with me in the summer. played around with the knobs and it blew out cold again.
_________________________

Jason G. Replaced 1st intake manifold at 15. haha
'03 Marquis: 67K,15.31 @ 91.19, MZT 93 octane tune, P&P Aviator T/B, duals with rear cats missing, 3.27 Trac loc 31 spline rear, sway bars, tints, badgeless grille..blahblah various exterior mods *NEW* Steeda pulleys and Towncar rims
'08 F-450 6.4 Powerstroke: DPF,EGR delete, Spartan powered tuner.

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#2445161 - 01/25/12 09:41 PM Re: Nothing but hot air . . . blend door actuator? [Re: dubch87]
lampey Offline
Stranger

Registered: 12/16/11
Posts: 1
Loc: camp lejeune, Nc
I have the same problem except no heat and just ac. Its an 07 cvpi. I'm going to replace the actuator too. Did you go with a motorcraft one also?

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#2445212 - 01/25/12 11:22 PM Re: Nothing but hot air . . . blend door actuator? [Re: dubch87]
PoliceInterceptr Offline
Poobah

Registered: 07/24/08
Posts: 5115
Loc: Miami, FL
Might want to have your system charged before trying to replace anything. A few years back, my A/C just stopped blowing cold air one day. I got a bottle of R134a or whatever it's called from the auto parts store and charged it up. To this day it still blows ice cold. Good luck.
_________________________
1998 Acura Integra LS (DB7) - B18B1, 5 spd, 100% stock.
*2000 Crown Vic P71 with a few mods* - Gave it to my mom. lol.
"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf." - George Orwell.
"America is all about speed - hot, nasty badass speed." - Eleanor Roosevelt.

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#2445375 - 01/26/12 12:03 PM Re: Nothing but hot air . . . blend door actuator? [Re: dubch87]
RollinX151 Offline
Over the Hill

Registered: 02/01/11
Posts: 1566
Loc: Hollywood, FL
Happened to me in my lincoln. Would blow hot all of a sudden then go back to cold for a few days, then hot for a day or two. The blend door is giving up. Every time you turn the car on, the blend door cycles so sometimes it will stay at hot or cold? I never repaired it because removing the dash which is a pain in the ass, just to replace a $20 part is [censored]. A shop charges like 4-6 hours of labor so it was not worth it.
_________________________
1996 Lincoln Town Car "Cartier" - 157K miles, 70mm TB, ADTR high flow intake tube, Magnaflow mufflers w/ high flow cats, MSD wires, MSD coils packs, Autolite Double Platinum plugs, 99' Presidential wheels, 01' Wood steering wheel, All LED interior, 8K HID's...






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