No ac

Asked by Apr 03, 2015 at 12:32 PM about the 2000 Ford F-150 XLT Extended Cab LB

Question type: Maintenance & Repair

No Ac, I get 12v @ the compressor when ac is commanded, freon full, thinking bad
compressor, any other ideas?

3 Answers


Make sure the voltage to the compressor switches on and off via the switch inside the vehicle. If you do, have someone turn on the a/c with the engine at idle. The clutch on the front of the compressor, inside the pulley which turns, should engage, or try to, there is normally a click. Does it click and engage or rattle then stop? A rattle to the clutch indicates the clutch has had it and can be replaced. If nothing happens there could be a problem with the electro magnet just behind the clutch which engages it. It could be a ground problem within the magnet or the magnet itself. The clutch and electromagnet can be replaced, usually, without removing the compressor if it is located in an easily accessible location. Determine what the problem is, clutch, magnet, or seized compressor then price out the parts vs a replacement compressor.

1 of 1 people found this helpful.


the areal answer i this , if you don't know what is wrong the internet is going to confuse you much more . The way it was designed was the front unit is run in a daisy chain style hose configuration from factory for the front and rear units to use only one compressor. The front unit only will pump the refrigerant in the proper cycle . as soon as you engage the rear ac evap system there is a electro valve in the rear of the truck the open and now allows the refrigerant to also be pu,[ed from the front to the rear unit . They do this to take some extra strain off the compressor from pumping the extra refrigerant for years and wearing out the compressor . The rear Valve is a sticky monster and always has been . To replace it you will need to dump the system and change the valve after verifying it is receiving power and if it is opening but not cooling the truck could simply need a topping off , since the size of the system has more than doubled when you engage the second unit . There are a few different situations that can roll the non ac guy so sometimes its the best idea to find an honest ac person , use common sense and trust them . Go have a coffee while they work, no-one like the customer hovering over their shoulder asking questions . If we wanted to teach HVAC we would have went that direction and made the big money (hahaha). Ford systems have provided my family food on the table since 1985 , they work good for a while and always break , thanks Ford !! All the techs remember Black death ? What a retirement plan that was . Good luck and take internet info with a grain of salt .

Your Answer


Looking for a Used F-150 in your area?

CarGurus has 222,391 nationwide F-150 listings starting at $1,222.


Ford F-150 Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,287 Great Deals out of 152,360 listings starting at $1,499
Used GMC Sierra 1500
903 Great Deals out of 59,465 listings starting at $1,980
Used Ford F-250 Super Duty
420 Great Deals out of 45,555 listings starting at $1,500
Used Toyota Tundra
560 Great Deals out of 37,443 listings starting at $1,500
Used Dodge Ram 1500
349 Great Deals out of 9,682 listings starting at $800
Used Toyota Tacoma
445 Great Deals out of 41,056 listings starting at $2,600
Used Ford Mustang
317 Great Deals out of 38,894 listings starting at $1,995
Used Ford F-350 Super Duty
381 Great Deals out of 25,771 listings starting at $249
Used Ford F-250
425 listings starting at $4,543
Used Chevrolet Silverado 2500HD
396 Great Deals out of 31,613 listings starting at $1,950
Used Chevrolet Tahoe
646 Great Deals out of 38,080 listings starting at $995
Used Ford Explorer
896 Great Deals out of 64,566 listings starting at $1,995

Used Cars For Sale

2018 Ford F-150 For Sale
34 Great Deals out of 141,429 listings starting at $19,500
2017 Ford F-150 For Sale
171 Great Deals out of 11,736 listings starting at $18,450
2016 Ford F-150 For Sale
213 Great Deals out of 8,129 listings starting at $14,500
2015 Ford F-150 For Sale
362 Great Deals out of 10,513 listings starting at $11,990
2014 Ford F-150 For Sale
554 Great Deals out of 13,179 listings starting at $8,991

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.