99 exped electrical problem when it rains

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Since: Jul 07

Panama City, FL

#1 Jul 4, 2007
We have been having what was minor electrical issues after it rains. But last night the wierdest one ever happened. We heard our car trying to start by itself. So we unhooked the battery and went to bed. Then in the am we hooked it back up and it is still doing it. The other things it has been doing are wierd, but not major. The radio would cut in and out and the headlight does not work. Sometimes the air would turn on after the car was off. But all these problems seem to go away after everything dries out. This new problem is not. Any help would be great!! Thank you. Also we do not have an owners manual... would anybody that has a 99 Ford Expedition 4.6L be able to send a copy of the fuse layout. I am thinking this might be something we would need to fix this problem! Thanks
e mail is mbeck36@yahoo.com
April

Apopka, FL

#2 Aug 4, 2007
We seem to be having the exact same problem. It was minor at first, but when it rains the truck tries to start by itself. Mine is a 2000 Expedition Eddie Bauer. This has been going on for a while so now we know to disconnect the batter if a storm is coming. I have noticed that the longer this problem goes on it gets worse. If you are driving it and it gets wet, even though it is cranked it will still try to turn over and make a terrible noise. I've searched this issue a lot through the internet and it seems that a lot of people are having this problem and Ford is doing nothing about it. They investigated it but closed the case and declared NO RECALL. Obviously there is a defect if so many people are having this problem. If you find out a solution I would appreciate it if you would let me know, and I will do the same!!
Hendrik

Canada

#3 Aug 10, 2007
I was reading your story about the electrical problems with your expedition and thought I was reading my own story. We have a 2000 expedition and had the exact same problems. I went to ford with the problem and they said that we should fix the computer then find the problem wrong order!
I searched the internet and found another gentleman from Virginia with the same story as mine and he had the windshield replaced and problem solved.
I went to a window shop, had them take out the window and reinstall it. They told me that when the window was installed in the factory, they did not wait long enough for the urethane to dry and therefore water was leaking in at the bottom of the windshield.
Since it I had the windshield replaced, I have not had a problem yet!
Rachel

Syracuse, NY

#4 Aug 12, 2007
I had the same problem with a 2001 Ford Expedition. Problems usually started when it rained - the lights would turn on and off inside and outside of the vehicle (no matter if the vehicle was on or not). There were problems with the turn signal, the rear wipers, the door ajar light. The running board lights remained on at least an hour after turning off the vehicle. The interior lights remained on for several minutes while driving. *I wouldn't recommend driving at night if you have this problem. The air suspension light was on. I took the vehicle in for repair to a couple of different shops, a couple of different times. They thought it might be the window seal leak, but it turned out not to be (so they say). Several different days and many hours each day and still no idea what the problem was. At 103,000 miles I figured it was time to get rid of the vehicle. So, I bought a newer 2006 Exp. 8 weeks ago. I'M NOT AT ALL PLEASED. I noticed this one had an oil leak about a week after I purchased it. Right now, it's in the shop because the interior is flooded (presumeably from a plugged A/C drain). I guess I better purchase a warranty on this one.
Randy

Carrington, ND

#5 Nov 20, 2007
I have a 1998 Expedition and I too am having problems after it rains or we have any kind of change in climate. First, I left it out in the rain for a day and when I went out to start it, I could not get in to the vehicle. The keyless entry wouldn't open any of the doors and the key would not open anything either. Finally got in to the vehicle only to find out that the battery was completely dead. I charged the battery and it started fine. The air-bag light stayed on after this, but after about a month, it finally went out. It has been about 6 months since the first episode and now, it is happening again, only worse this time. I called a Ford dealership and he told me that it was the relay was stickink in the automatic door locks and that was draining the battery. I left all the doors unlocked and went out this morning to start it and surprise, it was dead again. I charged it up again, had the battery and the alternator tested and they were both good. Now, my speedometer doesn't work. Does anyone have any ideas or suggestions? Could it be something with the recall on the cruise-control? Please help!
Phil

Sylvania, GA

#6 Jun 2, 2008
I would like to add to the list of complaints regarding the electrical system when it rains. I have the same problems from the clicking noise to the air conditioner blowing when the expedition is turned off completely. NOW, my #15 fuse is blown and I have replaced it back to back. I dont know what to do now..HELP!
Gary

United States

#7 Sep 29, 2008
I am having a similar problem I have a 1999 expedition. After it rains my truck will not Stay running by it's self it constantly stalls. When I hold the gas down for a while it breaks out of the rough idle. Any one what I can do please tell me.
Karyn

Charlottesville, VA

#8 Nov 13, 2008
Gary wrote:
I am having a similar problem I have a 1999 expedition. After it rains my truck will not Stay running by it's self it constantly stalls. When I hold the gas down for a while it breaks out of the rough idle. Any one what I can do please tell me.
Any luck on figuring this out? Mine does the same thing!
Bill

Fort Huachuca, AZ

#9 Jan 7, 2009
I have the same problem with my 2001 Expedition.
Randy wrote:
I have a 1998 Expedition and I too am having problems after it rains or we have any kind of change in climate. First, I left it out in the rain for a day and when I went out to start it, I could not get in to the vehicle. The keyless entry wouldn't open any of the doors and the key would not open anything either. Finally got in to the vehicle only to find out that the battery was completely dead. I charged the battery and it started fine. The air-bag light stayed on after this, but after about a month, it finally went out. It has been about 6 months since the first episode and now, it is happening again, only worse this time. I called a Ford dealership and he told me that it was the relay was stickink in the automatic door locks and that was draining the battery. I left all the doors unlocked and went out this morning to start it and surprise, it was dead again. I charged it up again, had the battery and the alternator tested and they were both good. Now, my speedometer doesn't work. Does anyone have any ideas or suggestions? Could it be something with the recall on the cruise-control? Please help!
Uncle Willis

Chicago, IL

#10 Mar 2, 2009
Having the same problem now with a 2006 Explorer. Had it towed twice because it sat in the rain overnight. My wife caught it trying to start itself in the garage one night last October after I pulled it in during a storm. I've been calling it "Christine" ever since. The dealer tried to charge me $25 for the charge and electronic check, and I told them these stories. He waived the charge pretty quickly. I'm sure Ford is are aware of this situation, but they've completely ignored their customer base. I'll never buy another vehicle from them again.
Big Mike

Cartersville, GA

#11 Mar 4, 2009
i have a 99 expedition ok. when i try to crank my truck want nothing happen, no lights no gauge lights. i heard some clicking from the relay. so i change the relay the same thing happen, so i tried my battery the battery was dead, so i bought another battery, and it still doing the same thing, it just like the car is dead,
Dave

Georgetown, TX

#12 Mar 15, 2009
I own a 1998 EB, since its birth. I have the same problems after the rain. My only comment is why this problem started in the last few months, if it is a sealing prob. But, surely somethg is getting wet, then all things act crazy.
Hendrik wrote:
I was reading your story about the electrical problems with your expedition and thought I was reading my own story. We have a 2000 expedition and had the exact same problems. I went to ford with the problem and they said that we should fix the computer then find the problem wrong order!
I searched the internet and found another gentleman from Virginia with the same story as mine and he had the windshield replaced and problem solved.
I went to a window shop, had them take out the window and reinstall it. They told me that when the window was installed in the factory, they did not wait long enough for the urethane to dry and therefore water was leaking in at the bottom of the windshield.
Since it I had the windshield replaced, I have not had a problem yet!
mike

Lowell, MA

#13 Apr 6, 2009
same here 98 ford expedition! no running lights ! water in use box and wires drivers side! heat goes on without key! dead battery! i found a draw 50 amp fuse under hood so then i checked fuse box 3 fuses had a draw so i let truck run with heat on for a few hours with test light on and fixed . the draw went away when all dryed out! so having windshield done wed. and i bet it will be ok i hope! also my windshield is ford one! if your not sure look dead center bottom and look for ford mark!
A Duran

Denver, CO

#14 May 15, 2009
Well it is ashame that the 1999 Ford Expedition is a lemon. I am the only owner and have had so many problems, electrical, oil leaks. For some reason since day one the inside light will stay on and flicker when driving. Any help on this?? Anyone having problems when you change the back tires does it start feeling like something is grinding under the truck. Not sure what got loose?? I also toke my truck to the dealership nine days after I bought it for the electrical problem and they will deny their is anything wrong. Not to mention the rear door locks they dont open i'm scared if there is a fire my kids will not be able to get out!! Lemon!!!!
Danny from the Bronx

Bronx, NY

#15 Feb 24, 2010
Hi ! Everyone it's sad 2 say but we are all having the same problems and what bothers me the most is that I'm a ford fan ! I would like some one 2 give me a answer on this one ... Any type of help I have a 1999 ford experdition eddie bauer triton v8 5.4 L for some reason when it rains or not my lights flick on and off !! Inside and out !!! Eather 15 to 20 mnts and it drains my battery ????
Does any one have a solution on this ?? My email adress is NYSD04@hotmail.com
Tony

Standish, ME

#16 Mar 29, 2010
Ok...Randy...here's the deal:

#1: Your lower windshield is leaking, where you can't see it...and chances are, it is near the lower right corner...dripping onto/into your PCM box (computer). Take your Expe to a glass-shop, and ask them to remove and reinstall your windshield...maybe $100-$125. Explain to them, you believe a water-leak to be hitting your computer. Properly re-installed, it should fix your drip-problem.

#2: Check under your dash, or have a body-shop check...chances are, that a piece of molding under the hood, by the wiper valence, is not installed properly, cracked, missing, or something is wrong. If water drips by it, IN ANY WAY, the ONLY PATH IT CAN GO is onto your PCM...

Ford was a MORON for not Making a water-proof housing for the PCM...AND FOR PLACING IT WHERE THEY DID on these vehicles. There are THOUSANDS of complaints, NHTSA is doing nothing about it, and no one is telling everyone the truth about the problem. It is unfortunate...I wish there were one place everyone would go, so that they could know this 2-part solution. If the water hasn't totally fried your PCM already, this is the permanent fix...

KEEP THE PCM DRY!!!
carmelk6

United States

#17 May 27, 2010
'97 Expedition, 5.4L, 190k. Excellent vehicle until past several months. Battery would drain. After charging the vehicle would have electrical issues: dash lights would flicker, wouldn't shift well, dome lights would stay on, cabin fan would stay on, etc. Over time things would return to normal. Multiple dealer trips were no help - sorry sir, we can't duplicate the problem. Finally figured out it happened after rain, only when vehicle was parked a certain way. If the passenger side was slightly lower than driver had no problems. Some online research and had windshield resealed two days ago. Had to be ground down to metal to reseal, luckily no holes or deep rust pits. No doubt this was the problem. carmelk6@hotmail.com
Mike

Brownsville, TX

#18 Jan 24, 2011
I have a 2000 ford expedition eddie b. Edition with problems alike . Every time it rains my ac turns on when the truck is off. Last time that happened I put the key in the ignition and turned it a little bit and then the truck tried to turn on by itself . Then afterwards the truck was on the starter keep trying so I just decided to disconnect the battery. Also my radio works fine when it's parked but when I put it on drive it turns off . Sometimes it comes on when I drive but then it just keeps turning on and off . Any reply or help woul be greatly appreciated
Guy

Staten Island, NY

#19 Feb 24, 2011
Mike wrote:
I have a 2000 ford expedition eddie b. Edition with problems alike . Every time it rains my ac turns on when the truck is off. Last time that happened I put the key in the ignition and turned it a little bit and then the truck tried to turn on by itself . Then afterwards the truck was on the starter keep trying so I just decided to disconnect the battery. Also my radio works fine when it's parked but when I put it on drive it turns off . Sometimes it comes on when I drive but then it just keeps turning on and off . Any reply or help woul be greatly appreciated
I have a 2001 and it does all the same except it turns off the heat or ac just like the radio and today it started itself
Belinda

Newburgh, IN

#20 Mar 7, 2011
I have a 97 Expedition EB and mine was perfectly fine Friday night, while driving it in a heavy rain. Saturday morning, dead as could be, couldn't even unlock it. Husband jumped it, fired right up, air bag light stayed on. He left it alone for a few hours, dead again. I noticed, about a week ago, that it appeared the inside of the windshield had been wet, thought that was odd....after reading all of this, it all makes sense now! Guess I will be visiting my local window shop! Other than this, my 209,000 mile vehicle has been great!(have a rough idle occasionally too, now I"m thinking this may be cause by the PCM getting wet because it only happens occasionally) grrrr

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