I just had the brake fluid and oil changed in my 2002 F-150 at a chain oil and lube shop. Now, my heater a/c fan doesn't respond to the switch. It comes on and goes off intermittently. I am thinking it is responding to changes in engine vacuum as I accelerate and brake. Did the lube guys break something?

Asked by Greatscot Feb 03, 2015 at 12:52 PM about the 2002 Ford F-150 Lariat Crew Cab SB

Question type: Maintenance & Repair

2002 F-150. I had the oil and brake fluid changed at a chain shop. After, I now have a
problem that did not exist before. The fan for heater and a/c does not respond to the
switch. If the fan is on max, it blows full on then stops, then will blow full on. If the fan
is set at a lower speed, it does the same, blows, then stops, then blows, then stops. I
am associating the change with changes in engine vacuum as I accelerate or let off
the gas and/or brake. I replaced the control head for a/c, heater, fan just over a year
ago at a Ford dealer so I know the control unit is good.

61,265

Andrew answered 9 years ago

The fan doesn't run off vacuum. The vent selection may but the fan is electric. Sounds like a loose connection

Mark helpful

Your Answer:

I just had the brake fluid and oil changed in my 2002 F-150 at a chain oil and lube shop. Now, my heater a/c fan doesn't respond to the switch. It comes on and goes off intermittently. I am thinking it is responding to changes in engine vacuum as I accelerate and brake. Did the lube guys break something? 1 Answer

2002 F-150. I had the oil and brake fluid changed at a chain shop. After, I now have a problem that did not exist before. The fan for heater and a/c does not respond to the switch. If the fan is on ...

2002 Ford F-150 Lariat Crew Cab SB

-

Maintenance & Repair
i put a new ignition switch in my truck but to do it i took apart the top of the column to do so and when i did a piece fell out with a spring and i got it to where it all goes back and i don't know where the spring looking thing goes and now it is like the key aint telling the transmition its on because it wont go into gear it wont shift out of park 5 Answers

this si my everyday driver i need it fixed asap

1986 Ford F-150 XL Extended Cab LB

-

Maintenance & Repair
my ford f-150 has 100.000 miles on it, i have water condensation in my oil ,i need to change it, is it alright to flush the motor with kerosene without starting it and then change the oli and filter 3 Answers

water condensation in oil should i flush with kerosene and then change it

2004 Ford F-150 FX4 Ext. Cab 4WD

-

Maintenance & Repair
I have a 2012 Ford F-150 FX2. When driving it will shut off and the tool picture on the screen the engine light is also on. I have to pull off the the road and put it in park and restart it. 1 Answer

while driving my 2012 F150 will shut down and the tool picture comes on and the engine light is always on. I have to pull off road, put it in park and restart it will cut off twice every mile. I wa...

2012 Ford F-150

-

Maintenance & Repair
I have a 2000 F150 Extended Cab 4.2L V-6. On the drivers side firewall is a cylinder and out of the bottom are two vacuum lines. One of them comes from the bottom of a black fluid refill reservoir and runs to under the throttle body. It has collapsed and is making the truck run rough. Is that part of the Smog System? It's on the firewall, almost sitting on the top left of the brake booster and in front of the clutch refill reservoir. any ideas what vacuum line that is? Thanks. 2 Answers

I have a 2000 F150 Extended Cab 4.2L V-6. On the drivers side firewall is a cylinder and out of the bottom are two vacuum lines. One of them comes from the bottom of a black fluid refill reservoir a...

2000 Ford F-150 XL SB

-

Maintenance & Repair

Used Chevrolet Silverado 1500

195 Great Deals out of 5,877 listings starting at $2,975

Used GMC Sierra 1500

128 Great Deals out of 6,516 listings starting at $3,975

Used Ford F-250 Super Duty

18 Great Deals out of 1,178 listings starting at $8,995

Used Toyota Tundra

31 Great Deals out of 1,361 listings starting at $6,255

Used Toyota Tacoma

46 Great Deals out of 1,074 listings starting at $9,995

Used Dodge RAM 1500

6 Great Deals out of 72 listings starting at $3,000

Used Ford Mustang

58 Great Deals out of 1,366 listings starting at $4,995

Used Ford Ranger

26 Great Deals out of 1,602 listings starting at $3,995

Used Chevrolet Silverado 2500HD

27 Great Deals out of 1,241 listings starting at $9,500

Used GMC Sierra 2500HD

21 Great Deals out of 1,519 listings starting at $5,500

Used Ford Explorer

75 Great Deals out of 2,091 listings starting at $3,995

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. Content will be removed if CarGurus becomes aware that it violates our policies.

1 Answer

Your Answer:

Shortcuts

Search Ford F-150 Questions

CarGurus Experts

Find great deals from top-rated dealers

Related Models For Sale

1 Answer

Your Answer:

Related Questions

my ford f-150 has 100.000 miles on it, i have water condensation in my oil ,i need to change it, is it alright to flush the motor with kerosene without starting it and then change the oli and filter 3 Answers

I have a 2012 Ford F-150 FX2. When driving it will shut off and the tool picture on the screen the engine light is also on. I have to pull off the the road and put it in park and restart it. 1 Answer

Shortcuts

Search Ford F-150 Questions

CarGurus Experts

Find great deals from top-rated dealers

Related Models For Sale