My heater A/C fan in my F53 chassis quit working recently, therefore, can't operate the air conditioner. I checked the 3 way resistor in the duct but found it ok. I checked all the fuses that I could find and they were all ok. Have any on you had this problem and what was your solution?
2001 Tropi-Cal 6350, Ford V-10, 310HP, 7.77 MPG
2002 Honda CRV 2WD, 27 MPG
Look behind the hood, there is a relay/fuse box about the size of a cigar box, made from black plastic and on top will read fuses and relays.
The fan relay may have quit, I had it happen on my f250 and my neighbor has a Winnebago on a Ford chassis and his did the same, I happened to have a spare relay, we installed it and all was fine.
Your chassis manual should tell you which relay it is, and these can be bought at any discount auto parts store, if it failed once it could fail again so get two, that way you always have a spare. The cost is less than 10 bucks each.
We both now keep a spare in the glove box.
Hope this helps.
Chris & Dianne plus two boys, both of them are Eagle Scouts.
Jayco Designer 3110
F250 PSD 4x4 Crew Cab
On our 99 H/R Vacationer, the fan went out & it was the motor bad.
Your fan motor, should be in the same location as ours, in front of the passengers seat under the dash because of it being a chassis item. Could be something as simple as the 12v wire came loose from the motor or the ground wire loose connection.
A 12v test light would be a handy item to check & make sure 12v is getting to the motor.
On ours, I replaced the motor, got a new one from Advance Auto Part, but me being me, I wanted to know why the old one failed.
Pulled the old motor apart & low and behold the ground wire inside the motor, where it had been spot welded to the motor frame had broken loose. I attached the ground wire to one of the screws holds the motor frame together, worked like a top once I did that, so now I got an extra blower motor just in case.
On ours, there was no way to get part of my 250 Lb frame, between that passengers seat & dash to get to that blower motor, so had to pull the seat out & was easy as pie after that.
WEAR SAFETY GLASSES laying under that area, cause metal shivers dont wash out to easy.