A/C & Vent Fan Issues

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Mar 15, 2024 | 12:01 PM

rltgold

Thread Starter

4th Gear

Joined: Mar 2024

Posts: 4

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A/C & Vent Fan Issues

Hi, Sorry if this has already been answered.
I have a 2010 E-350 Van. The A/C & Vent fan works great then it just stops then after awhile it starts again. It doesn't sound like it the Vacume Reservoir.
Thanks

Mar 15, 2024 | 03:25 PM

etinpa

Mountain Pass

Joined: Mar 2023

Posts: 221

Likes: 53

Sounds like something is getting hot and opening the circuit and reestablishing the circuit when it cools off.

Here's the wiring diagram for the fan portion of the Climate Control System. I'd do the testing on the HIGH speed to take the Resistor out of play.

IIRC the fan speed switch on these has had an overheating problem for others in the past. I'm not saying that's it but...

Mar 15, 2024 | 03:31 PM

rltgold

Thread Starter

4th Gear

Joined: Mar 2024

Posts: 4

Likes: 0

Etinpa, Thanks, I'll let my mechanic know

Mar 15, 2024 | 07:13 PM

maples01

Lead Driver

Joined: May 2004

Posts: 5,020

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From: Maryville

Bet its the resistor, but could be the switch.

Mar 16, 2024 | 06:38 AM

manicmechanic007

Hotshot

Joined: Jul 2020

Posts: 10,471

Likes: 2,633

From: Near Salt Lake City

It might be the blower motor itself that is the fault
Try smacking it around some with the switch in high and see if it comes back to life
Put a test light in the blower wires and see if the power and ground are there