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Car Forum / Oldsmobile Cars / February 200887'Olds headlights that pop.
I've got an old Olds that everytime I turn on the heater or defroster the headlights pop. When I inspect the the lights or light (sometimes its just one light) the bulb has literally popped. What the hell is wrong with this car ? This is gettng expensive buying headlights. Are the headlights turned on when this happens? When you say "popped" do you mean the filament has burned out or the glass has broken? > I've got an old Olds that everytime I turn on the heater or defroster > the headlights pop. When I inspect the the lights or light (sometimes > its just one light) the bulb has literally popped. What the hell is > wrong with this car ? This is gettng expensive buying headlights. Yes, definitely turned on. And they don't pop right away either. Its sometime while I'm driving. Pop I mean the glass is exploded. The filament looks fairly in tact just some ash on it. Are these Halogen type lamps or are they sealed beams? > Yes, definitely turned on. And they don't pop right away either. Its > sometime while I'm driving. > Pop I mean the glass is exploded. The filament looks fairly in tact just > some ash on it. There Philips 9004 12v . Replacement bulbs. The 9004 appears to be a Halogen lamp. Are you observing the stringent handling requirements when you install a new lamp? My understanding is that you cannot touch any part of the glass envelope while handling them, and you cannot get let foreign material get on the glass while installing them. According to a recent informative thread in the sci.electronic.repair news group a higher OR lower voltage can be death to these bulbs also. How's your alternator performing? > There Philips 9004 12v . Replacement bulbs. Yes, I'm aware handling them with care. And as far as I can tell the altenator is okay. I've been wondering though, having looked at the wires if the light sockets were the original sockets, if the 1st owner wanting halogen lights replaced the old sockets with the older style of bulb by cutting them out. This would explain the tape on all the wires leading to the sockets. What do you think ? What kind of Oldsmobile do you have? I was guessing while researching the issue, and assumed that it came from the factory equipped with Halogen bulbs. Taped connections? It might be good to take them all apart and inspect the quality of the splices. Maybe the machine had an accident earlier and someone put new fenders on it but did not rewire in a professional manner. Is there any way that water could be splashing onto the bulbs through an opening in the headlight housing? > Yes, I'm aware handling them with care. And as far as I can tell the > altenator is okay. I've been wondering though, having looked at the > wires if the light sockets were the original sockets, if the 1st owner > wanting halogen lights replaced the old sockets with the older style of > bulb by cutting them out. This would explain the tape on all the wires > leading to the sockets. What do you think ? No, I don't think any water is getting in there but I'll have to have a closer look. Besides that doesn't explain why they pop after turning on the heater or defroster. Oops. I had forgotten that heater/defroster thing. If low voltage really does zap Halogen bulbs then my suspicions would turn toward a grounding problem. If the headlights and the heater/defroster are sharing the same ground path for some reason such as a poor ground connection for one circuit or the other, then that could reduce the voltage applied to the bulbs even though alternator output is normal. Kind of a stretch, but I'm running out of ideas. > No, I don't think any water is getting in there but I'll have to have a > closer look. Besides that doesn't explain why they pop after turning on > the heater or defroster. I'll look into it tomorrow and go over some some circuit diagrams.
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