Very strange electrical problem with a Hyundai (Page 1/2) Patrick DEC 12, 04:44 PM I was originally going to post this looking for a solution, but I found the problem.... so I wanted to share in case it might help someone else with a similar issue. I have a '94 Hyundai Elantra which had been sitting unused for a couple of years. I've now brought it out of retirement to drive my 93 year old father around, as he finds my Fieros a little difficult to get in and out of. Occasionally when I would start the Elantra, the engine would run fine (as usual), but I couldn't get the headlights to come on or the heater blower to run. Everything else seemed to be fine, but the headlights and blower motor wouldn't work. This would be a real nuisance... especially on a cool damp night. It usually resolved itself in a few minutes. Sometimes I would have to re-start the car. Other times the headlights would just come on and the blower would start blowing without me doing anything. I found this very perplexing. Can anyone guess as to what the problem was? Go on, give this a crack. What do you think the issue was? I'll post later what I discovered. carnut122 DEC 12, 07:39 PM The ignition switch (or a screw loose behind the wheel -just kidding on this last one) ? David Hambleton DEC 12, 10:09 PM A poor connection in the electrical system would get better when the engine compartment temperature went up. Patrick DEC 13, 12:45 PM quote Originally posted by carnut122: ...or a screw loose behind the wheel Santa will be bringing you a lump of coal. I like the suggestions so far. I'll post tonight and state whether or not anyone's nailed it. More suggestions are welcome! thesameguy DEC 13, 01:56 PM Yeah, I'd check the fusebox, maybe wiggle the fuses around, maybe try wiggling them while the car is running and the components aren't working. My '62 Falcon's blower won't work at all when the car is cold - the fuse makes poor contact. Sometimes I can reach under the dash and "jump start" it, but usually I just gotta wait until the cabin warms up a little and it magically starts working again. I'm sure the Elantra uses blade fuses (versus ceramic or Falcon-old glass fuses) and they make more reliable contact, but possibly after sitting for a few years you've got corrosion in there that's inhibiting contact. *Could* also be stuck relays, but generally speaking blowers don't have relays, so the fuse explanation seems more likely. Patrick DEC 13, 07:01 PM Another suggestion. Good, good... Anymore? rbell2915 DEC 13, 09:25 PM If it's really cold out, maybe the relays are sticking in the open position and they need to warm up before being used? I know, sounds stupid, but totally plausible, right? I've just started working on cars so I'm still learning, always learning Stubby79 DEC 13, 11:40 PM No/broken chassis ground wire? Patrick DEC 14, 01:51 AM Alright, we're still getting good suggestions. That's great, thanks guys. Just in case there's anymore ideas coming, I'll wait another day before I post what I actually discovered. David Hambleton DEC 14, 11:00 AM Hmmm... I wonder if it involved some little critters somehow... Otherwise it would be some boring ordinary connection thing...