when i turn on ac it sounds like the heat flapper opens and then the heat turns on


Asked by Jul 05, 2013 at 04:25 PM about the 1999 Ford F-150 Lariat 4WD Extended Cab SB

Question type: Maintenance & Repair

ac was blowing cold then when I put truck in gear I hear the flapper switch over and then the heat comes on . a/c is fully charged

3 Answers


Is the a/c compressor running? If it is, then the a/c is probably ok. The problem is probaby in the mixture door actuator (electrical driven gear) if you have one or the blend door itself. Is the air coming out HOT (like having the heat on) or tempid like outside air?

1 out of 1 people think this is helpful.

Yes how do I fix it


Blows ac for a minute then I hear a thump then blows hot

Your Answer

Add photo

Related Questions


Looking for a Used F-150 in your area?

CarGurus has 217,203 nationwide F-150 listings starting at $1,000.


Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
Reputation 6,000
#2 dandyoun
Reputation 3,880
#3 tennisshoes
Reputation 2,300
View All

Related Models For Sale

Used Chevrolet Silverado 1500"
2,472 Great Deals out of 144,752 listings starting at $1,995
Used GMC Sierra 1500"
1,045 Great Deals out of 56,526 listings starting at $2,300
Used Dodge Ram 1500"
528 Great Deals out of 13,942 listings starting at $995
Used Ford F-250 Super Duty"
450 Great Deals out of 42,959 listings starting at $1,000
Used Toyota Tundra"
639 Great Deals out of 26,720 listings starting at $2,500
Used Toyota Tacoma"
657 Great Deals out of 30,629 listings starting at $2,850
Used Ford F-250"
614 listings starting at $3,995
Used Ford Mustang"
730 Great Deals out of 41,499 listings starting at $900
Used Ford Ranger"
266 Great Deals out of 7,818 listings starting at $988
Used Ford Explorer"
1,365 Great Deals out of 72,128 listings starting at $300
Used Chevrolet Tahoe"
1,146 Great Deals out of 36,615 listings starting at $1,995
Used Nissan Frontier"
449 Great Deals out of 20,761 listings starting at $2,500

Used Cars For Sale

2017 Ford F-150 For Sale
6,441 listings starting at $17,015
2016 Ford F-150 For Sale
146 Great Deals out of 138,593 listings starting at $16,985
2015 Ford F-150 For Sale
247 Great Deals out of 9,002 listings starting at $17,958
2014 Ford F-150 For Sale
505 Great Deals out of 10,965 listings starting at $10,450
2013 Ford F-150 For Sale
715 Great Deals out of 14,777 listings starting at $7,727