P1633 - weird electrical issues...
Thread Starter
|
New User
Joined: Sep 2007
Posts: 12
Likes: 0
P1633 - weird electrical issues...
2001 Ford Expedition
Symptoms:
1. Passenger side window won't go down (maybe unrelated?).
2. Climate control display is blank.
3. Blower stays on max setting.
Any ideas how to troubleshoot this code?
Symptoms:
1. Passenger side window won't go down (maybe unrelated?).
2. Climate control display is blank.
3. Blower stays on max setting.
Any ideas how to troubleshoot this code?
Thread Starter
|
New User
Joined: Sep 2007
Posts: 12
Likes: 0
All at once.... Yesterday, my wife called and said the vehicle wouldn't stay idling once started and that the blower was running on max. I recalled that I had a simliar issue three years ago with the vehicle not idling and it turned out being a bad Idle Air Control valve. So I picked up an IAC last night and installed it. After that, I was able to start the vehicle and it would idle. In fact, I drove it into town last night after replacing the IAC, but the other issues still remain - blower on max, climate control display blank and passenger window not working.
Fleet Owner
Joined: Apr 2008
Posts: 24,316
Likes: 5,127
From: 0,0,1
The max blower and blank display issues I can see being related to maybe say the blower speed control or switch. But the window is throwing me off, unless the window motor was bad prior and no one noticed until the HVAC acted up making them attempt to lower the window.
Fleet Owner
Joined: Apr 2008
Posts: 24,316
Likes: 5,127
From: 0,0,1
Expeditions are know for a leak in the lower driver's side windshield. The leak in turn drips onto the fuse box and GEM, wreaking all kinds of electrical havoc.
Trending Topics
Thread Starter
|
New User
Joined: Sep 2007
Posts: 12
Likes: 0
So it sounds like this may be something to have a professional check out rather than trying to track down the issue on my own?
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Fleet Owner
Joined: Apr 2008
Posts: 24,316
Likes: 5,127
From: 0,0,1
It depends on your level of experience and comfort with diagnosing something like that. If you're apt to second-guess yourself, then yes have a pro take a look and at least give you an opinion.
Thread
Thread Starter
Forum
Replies
Last Post
