A/C quits working when engine is under load.

30

Asked by Jul 23, 2013 at 03:19 PM about the 2000 Ford E-150 STD Econoline

Question type: Maintenance & Repair

When accelerating, my A/C stops blowing and only sometimes resumes blowing when a fairly low speed is attained. At highway speeds, it practically never runs. One mechanic said it was a vacuum problem and the dash board would have to be removed to fix it ($900). Is there an easier way to get access to the problem?

3 Answers

86,805

He may be correct about a vacuum problem, when it happens does all of the air blowing go to the windshield like the defrosters are on? If it does then he correct about a vacuum leak and the dash will have to come out to locate it, it it doesn't do that then it could be a control head problem, but there again it is located behind the dash, kind of a catch 22. I would check the main vacuum line that feeds the heater controls first just to make sure it is not damaged somewhere along it's length.

10 out of 10 people think this is helpful.
Best Answer
30

Thanks...that pretty much confirms my suspicions. I think it probably a fairly easy repair once you get to it, but the problem is getting to it.

3 out of 3 people think this is helpful.
23,065

There's a black plastic vacuum tube from the intake that runs along the top of the engine on the right side. There is a Check Valve a Tee, and a vacuum reservoir. One end of the tee goes to the reservoir and the other through a grommet through the firewall to your AC controls. The system is designed to hold vacuum whenever there is a high load demand (Climbing a hill, passing or taking off from a stop with a heavy load.) Check your tubing, check valve operation and the reservoir's ability to hold vacuum. $900? That's a lot of beer.

20 out of 20 people think this is helpful.

Your Answer

Add photo

Related Questions

E-150

Looking for a Used E-150 in your area?

CarGurus has 156 nationwide E-150 listings starting at $3,650.

ZIP:

Search Ford E-150 Questions

Ford E-150 Experts

#1 FordNut
FordNut
Reputation 630
#2 Tracy Hooks
Tracy Hooks
Reputation 490
#3 kbro
kbro
Reputation 420
View All

Related Models For Sale

Used Ford F-150
2,691 Great Deals out of 211,555 listings starting at $1,000
Used Ford E-Series Cargo
94 Great Deals out of 3,170 listings starting at $1,995
Used Chevrolet Silverado 1500
2,283 Great Deals out of 155,210 listings starting at $1,395
Used Ford E-Series Wagon
47 Great Deals out of 1,778 listings starting at $1,500
Used Ford E-350
234 listings starting at $495
Used Dodge Ram 1500
528 Great Deals out of 12,814 listings starting at $1,995
Used Ford F-250 Super Duty
397 Great Deals out of 45,071 listings starting at $2,000
Used Chevrolet Express Cargo
81 Great Deals out of 14,144 listings starting at $2,250
Used Toyota Tacoma
612 Great Deals out of 35,096 listings starting at $2,155
Used GMC Sierra 1500
938 Great Deals out of 62,237 listings starting at $1,395
Used Ford F-250
512 listings starting at $3,500
Used Toyota Tundra
587 Great Deals out of 30,722 listings starting at $2,637
Used Chevrolet Express
119 Great Deals out of 5,954 listings starting at $2,499