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Ceramic Fuses Fuse

i have a 98 bmw 528i and it has an electric fan in front of the radiator, but it is not turning on.?

i looked at the fuses and they look fine. it has those ceramic things up front with wires on it dose that control the fan if not then where is the relay, for it? any other suggestions why it isnt turning on. see the car is getting hot, and i cant figure out why. i dont think its the thermostat but you never know, where is that located? is there a web site that i can look at so i can figure it out? plz help thanks. im trying not to take it to tha dealer, thats a last resort.

The first two answerers dealt already with the regular viscous coupling fan extending from the waterpump and driven by the fan belts.
So I would deal with the "electric fan infront of the radiator".
It should turn on when the AC is on or when the engine is hot.
It has continous 12 volts power directly supplied by a big fuse
and this fuse very rarely goes out. It is turned on by the DME (engine computer module) based on inputs by the AC, engine temp, and coolant temp. The signal given by the DME is a grounding signal to the relay which is built-in to the electric fan.
If the thermostat is bad (stuck open), then the engine would run colder than normal and the DME might not see a need to switch on the electric fan.
But turning on the AC should turn on the fan nonetheless.
If it does not, then the fan (with built in relay/final stage) should be replaced. This assumes that the wires to the fan are OK. The main cable connector to the fan is at the upper right hand side of the radiator, right in front of the regular fan.
Replacing the fan (including shroud) is not rocket science but it involves removing the frt. bumper cover and some other stuff. You pull the fan assy. downward to replace. You need patience and a little imagination to do the job.
Have fun!

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The Difference Between Inlays/onlays and Dental Crowns

Inlays, onlays and crowns are all part of what dentists term “indirect restorations.” Veneers and bridges are also considered indirect restorations. Fillings are an example of “direct restorations.”

Crowns

Crowns (sometimes called “caps”) cover the entire tooth, including the sides. Crowns are meant to function like natural teeth and are used to shape, size and strengthen natural teeth as well as enhance their appearance.

Dentists use crowns when a tooth has been weakened by decay, is cracked, severely worn, or missing altogether.

· Crowns can hold a bridge in place when they’re placed over the teeth next to the gap

· They give a new surface to misshapen and/or extremely discolored teeth

· When a tooth with a large filling has very little tooth remaining, crowns are used to cover and provide support to the remaining tooth

· A crown can be attached to a dental implant and used to fill the gap left by a missing tooth

Crowns can be made from:

· All porcelain (ceramic)

· Porcelain fused to metal

· Gold alloy

The material is chosen according to where in the mouth the crown will be placed and on the patient’s budget. Temporary crowns, made by the dentist in his or her office for the patient to use while waiting on the permanent crown to come back from the lab are generally made from acrylic or stainless steel.

Inlays & Onlays

These are both types of fillings, and are made from porcelain. Inlays are not as large as crowns or onlays, fitting snugly within a tooth’s contours (cusps). They are custom made and then affixed permanently into a prepared cavity with dental cement.

Onlays cover some, but not the entire, chewing surface of the tooth and do not cover the entire tooth like a crown.

Both inlays and onlays are stronger than standard fillings, because they are bonded (cemented) to the tooth. Amalgam fillings are not cemented to the tooth, but are packed into the cavity. Being made of metal, they contract and expand in response to substances put in the mouth. This puts destructive pressure on the tooth, weakening it. By contrast, inlays and onlays hold the tooth together, strengthening it and prolonging its life.

Custom Fits Mean at Least Two Visits

Inlays, onlays and crowns are all made from a mold that is sent to a dental laboratory where the actual items are created. They’re custom made and require at least two visits to the dentist’s office: once for the mold to be taken, and then again to have the item(s) fitted.

All Materials Have Pros & Cons

The materials used to create these indirect restorations have their advantages and their disadvantages. While an all-porcelain restoration offers beautifully natural features, porcelain can fracture (crack) and also cause wear against opposing teeth if its surface is allowed to roughen. Gold alloys are extremely strong and durable; however, the metallic appearance is far from the natural look most people desire.

Knowledge Helps

Crowns, inlays and overlays vary in their uses, the materials from which they are made and in their pricing. Learning more about these differences can help you and your dentist decide which is best for you.

About the Author

If you are considering beautifying your smile with cosmetic dentistry and live in the San Antonio, Texas area, contact Dr. Brian Hale DDS for your consultation today.

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