Question about 1998 Ford Expedition

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I have a 1998 ford expedition that is having some kind of electrical proble. You can urn off the key and the heater will still run and the lights on the running board will not go off

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It is very possible that your vehicle is afflicked with the leaky windshield disease. The lower driverside corner of the windshield leaks and drips into the back of the FUSEBOX the problems usually start with running board lights staying on , radio going off when starting to drive , to no gauges working or the starter turning while the vehicle is off, this may take out the 300 dollar gem module piggybacked to it. Best thing to do is use rubber floor mats after a decent rain you will see water right under the fusebox would be on the driverside floorboard. If this is the case , find a used one on Ebay, dealer cost is 174 dollars from the dealer and another 300 for the gem module if needed 50/50 chance, then put some plastic over the back of these components or better have the windshield replaced perhaps resealed.


Posted on Feb 07, 2009

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Replace the blower motor resister that controls the heating fan ,sounds like you may have 2 problems not sure about the 2nd.

Posted on Dec 26, 2008


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2003 ford expedition starts after couple trys then runs great just having probles starting

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Feb 05, 2010 | 1998 Ford Expedition

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4 Answers

When I turn off my ignition, my heater fan will keep running

I just started experiencing the same problem. Yes, typically after rainy days, I can never get the interior lights to go out after the ignition key has been removed. The car acts as if there is a door open. Now, my latest problem is with the heater fan. Of course, putting the control in the "off" position will turn it off but you can turn it on and off with no ignition key installed. I'm also having problems with my heater core too so it's been a pain in the but!!

I believe this problem has also caused my battery to die which is why I'm on this site in the first place!! I can't get into the car with the keys and the dead battery won't allow me to unlock the car!! When it rains it pours!!!

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1 Answer

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Mar 12, 2009 | 1998 Ford Expedition

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