Ac Not working

Asked by May 26, 2014 at 09:35 PM about the 1999 Ford F-250 4 Dr XL 4WD Extended Cab SB

Question type: Maintenance & Repair

Ac Cluch not in gaugeing freon ok fuse ok

4 Answers


Typically the clutch not engaging is due to low freon level. Or faulty low level switch.

2 of 2 people found this helpful.

Agreed,,,thinking is a good thing ; )

3 of 3 people found this helpful.

You stated that the Freon is good, so I am going to assume you had someone hot charge the A/C system with the correct amount of Freon, correct? Check the voltage to the A/C clutch coil with the system turned on, if you have voltage then the clutch coil is bad, if no voltage then you either have a wiring problem, defective pressure switch, main A/C switch or A/C relay.


It's most likely that they pressed a schrader valve, heard a hiss and think it has plenty of R134a. You could always jumper the Low-side switch with a Paperclip to see if the Compressor engages. You should already have a Manifold Gauge Set hooked up so you can see what the Compressor is actually doing and if the system is actually charged. Don't run it too long on the Paperclip - low Freon also means that oil isn't being distributed through the system and could cause a Compressor problem. The Air Gap between the Compressor Clutch and the Pulley should be between about 0.020" and 0.030"

3 of 3 people found this helpful.

Your Answer

Add photo

Related Questions


Looking for a Used F-250 in your area?

CarGurus has 481 nationwide F-250 listings starting at $3,475.


Search Ford F-250 Questions

Ford F-250 Experts

#1 tennisshoes
Reputation 610
#2 dandyoun
Reputation 350
#3 F_O_R
Reputation 310
View All

Related Models For Sale

Used Ford F-250 Super Duty
346 Great Deals out of 46,938 listings starting at $1,895
Used Ford F-150
2,194 Great Deals out of 206,316 listings starting at $1,499
Used Dodge Ram 2500
160 Great Deals out of 5,240 listings starting at $3,495
Used Ford F-350 Super Duty
398 Great Deals out of 26,497 listings starting at $3,000
Used Chevrolet Silverado 1500
1,717 Great Deals out of 175,751 listings starting at $1,250
Used Chevrolet Silverado 2500
8 Great Deals out of 266 listings starting at $3,488
Used Dodge Ram 1500
455 Great Deals out of 11,152 listings starting at $700
Used Toyota Tundra
441 Great Deals out of 34,312 listings starting at $2,700
Used GMC Sierra 1500
819 Great Deals out of 68,199 listings starting at $2,484
Used GMC Sierra 2500
135 listings starting at $4,995
Used Ford Mustang
470 Great Deals out of 45,735 listings starting at $1,999

Used Cars For Sale

1999 Ford F-250 For Sale
24 listings starting at $6,395
1998 Ford F-250 For Sale
27 listings starting at $3,475
1997 Ford F-250 For Sale
134 listings starting at $4,995

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.